TERMIUM Plus®

The Government of Canada’s terminology and linguistic data bank.

H COMPOUND [30 records]

Record 1 2020-09-29

English

Subject field(s)
  • Chemical Elements and Compounds
DEF

... a chemical compound which is capable of dissociating to yield H+ ions in solution.

French

Domaine(s)
  • Éléments et composés chimiques
CONT

On utilise le pH pour mesurer l'acidité des solutions aqueuses, mais qu'en est-il de la tendance intrinsèque d'un composé acide à donner H+ à l'eau et à former des solutions aqueuses?

Spanish

Save record 1

Record 2 2015-04-08

English

Subject field(s)
  • Chemistry
CONT

The valencies of oxygen, nitrogen and carbon are thus found to be the same as from their hydrogen compounds ...

CONT

A number of hydrogen compounds ionize to yield solvated protons ...

OBS

compound: A homogeneous, pure substance, composed of two or more essentially different chemical elements, which are present in different proportions ...

French

Domaine(s)
  • Chimie
CONT

Les valences de O, N, C, sont ainsi celles des composés hydrogénés [...]

OBS

composé : Corps pur décomposable par analyse élémentaire en de nouveaux corps purs.

OBS

hydrogéné : Contenant de l'hydrogène.

Spanish

Save record 2

Record 3 2013-08-28

English

Subject field(s)
  • Chemical Elements and Compounds
Universal entry(ies)
C4H8O2
formula, see observation
(CH3)2CHCOOH
formula, see observation
79-31-2
CAS number
DEF

A chemical compound having the formula C4sub>H8</sub>O2 or(CH3) 2CHCOOH which appears under the form of a combustible, colorless liquid, is soluble in water, alcohol and ether, and is used in the manufacture of esters for solvents, in flavors and perfume bases, in deliming hides, as a disinfecting agent, a tanning agent and a varnish.

OBS

2-methylpropanoic acid: form recommended by the IUPAC (International Union of Pure and Applied Chemistry).

OBS

alpha: This word must be replaced by the corresponding Greek letter or italicized.

OBS

Also known under the following commercial designation: UN 2529.

Key term(s)
  • a-methylpropionic acid

French

Domaine(s)
  • Éléments et composés chimiques
Entrée(s) universelle(s)
C4H8O2
formula, see observation
(CH3)2CHCOOH
formula, see observation
79-31-2
CAS number
OBS

acide 2-méthylpropanoïque : forme recommandée par l'UICPA (Union internationale de chimie pure et appliquée).

OBS

Formule chimique : C4H8O2 ou (CH3)2CHCOOH

Spanish

Campo(s) temático(s)
  • Elementos y compuestos químicos
Entrada(s) universal(es)
C4H8O2
formula, see observation
(CH3)2CHCOOH
formula, see observation
79-31-2
CAS number
OBS

Líquido incoloro, soluble en agua, alcohol y éter. Punto de inflamación, 77º C. Poco tóxico. Combustible.

OBS

Fórmula química : C4H8O2 o (CH3)2CHCOOH

Save record 3

Record 4 2013-08-27

English

Subject field(s)
  • Chemical Elements and Compounds
  • Pharmacology
Universal entry(ies)
C10H16ClNO
formula, see observation
C6H5CHOHCH(CH3)NHCH3HCl
formula, see observation
50-98-6
CAS number
DEF

A chemical compound having the formula C10sub>H16</sub>ClNO or C6sub>H5</sub>CHOHCH(CH3) NHCH3HCl which appears under the form of a white crystalline powder with no odour.

OBS

(-)-ephedrine hydrochloride: usual name.

OBS

(1R,2S)-1-hydroxy-N-methyl-1-phenylpropan-2-aminium: form recommended by the IUPAC (International Union of Pure and Applied Chemistry).

OBS

l: The small letter "l" used as a prefix must be italicized.

OBS

L: The capital letter "L" used as a prefix is a small capital.

OBS

N; R; S: These capital letters must be italicized.

OBS

alpha: This word must be replaced by the corresponding Greek letter or italicized.

OBS

star: This word and the brackets around it must be replaced by an asterisk; it is pronounced "star."

OBS

Chemical formula: C10H16ClNO or C6H5CHOHCH(CH3)NHCH3HCl

Key term(s)
  • a-[1-(methylamino)ethylbenzyl alcohol hydrochloride
  • a-[1-(methylamino)ethyl]benzenemethanol hydrochloride
  • [R-(R[star]S[star]])-a-[1-(methylamino)ethyl]
  • L-a-(1-methylaminoethyl)benzyl alcohol hydrochloride
  • a-[1-(methylamino)ethyl]benzyl alcohol hydrochloride

French

Domaine(s)
  • Éléments et composés chimiques
  • Pharmacologie
Entrée(s) universelle(s)
C10H16ClNO
formula, see observation
C6H5CHOHCH(CH3)NHCH3HCl
formula, see observation
50-98-6
CAS number
OBS

chlorhydrate de (-)-éphédrine : nom usuel.

OBS

(1R,2S)-1-hydroxy-N-méthyl-1-phénylpropan-2-aminium : Les lettres majuscules «R», «S» et «N» s'écrivent en italique; forme recommandée par l'UICPA (Union internationale de chimie pure et appliquée).

OBS

l : La lettre minuscule «l» utilisée comme préfixe s'écrit en italique.

OBS

L : La lettre majuscule «L» utilisée comme préfixe est une petite majuscule.

OBS

N; R; S : Ces lettres majuscules s'écrivent en italique.

OBS

alpha : Ce mot doit être remplacé par la lettre grecque correspondante ou s'écrire en italique.

OBS

étoile : Ce mot avec les crochets qui l'entourent doit être remplacé par un astérisque; on prononce «étoile».

OBS

Formules chimiques : C10H16ClNO ou C6H5CHOHCH(CH3)NHCH3HCl

Key term(s)
  • chlorhydrate d'alcool a-[1-(méthylamino)éthyl]benzylique
  • chlorhydrate d'a-[1-(méthylamino)éthyl]benzèneméthanol
  • chlorhydrate de [R(R[étoile],S[étoile]])-a-[1-(méthylamino)éthyl] benzéneméthanol
  • chlorhydrate d'alcool L-a-(1-méthylaminoéthyl)benzylique

Spanish

Campo(s) temático(s)
  • Elementos y compuestos químicos
  • Farmacología
Entrada(s) universal(es)
C10H16ClNO
formula, see observation
C6H5CHOHCH(CH3)NHCH3HCl
formula, see observation
50-98-6
CAS number
OBS

Fórmula química: C10H16ClNO o C6H5CHOHCH(CH3)NHCH3HCl

Save record 4

Record 5 2012-04-17

English

Subject field(s)
  • Chemical Elements and Compounds
DEF

Said of a compound which contains the radical benzyl C6sub>H5</sub>-CH2 such as benzyl alcohol.

French

Domaine(s)
  • Éléments et composés chimiques
DEF

Qui contient du benzyle, radical univalent de formule C6H5-CH2.

OBS

S'emploie en particulier pour parler de l'alcool ou de l'ester benzylique.

OBS

Ne pas confondre avec «benzilique», qui signifie «Qui a rapport au benzile, dénomination courante de l'alpha-dicétone [alpha, en italique, représente ici le caractère grec correspondant], de formule C6H5-CO-CO-C6H5, qui se réarrange en acide benzilique sous l'influence des hydroxydes alcalins.

Spanish

Campo(s) temático(s)
  • Elementos y compuestos químicos
Save record 5

Record 6 2012-03-01

English

Subject field(s)
  • Chemical Elements and Compounds
  • Medication
Universal entry(ies)
OBS

Molecular weight: 324.34. ... Therapeutic category: bronchodilator.

OBS

2-(1, 3-dimethyl-2, 6-dioxo-1, 2, 3, 6-tetrahydro-7H-purin-7-yl) acetic acid compound with piperazine(1/1) : The capital letter "H" must be italicized; form recommended by the IUPAC(International Union of Pure and Applied Chemistry).

OBS

piperazine 2-(1,3-dimethyl-2,6-dioxo-1,2,3,6-tetrahydro-7H-purin-7-yl)acetate: the capital letter "H" must be italicized; IUPAC (International Union of Pure and Applied Chemistry) name.

OBS

piperazine compound with 1, 2, 3, 6-tetrahydro-1, 3-dimethyl-2, 6-dioxo-7H-purine-7-acetic acid : The capital letter "H" must be italicized; CAS(Chemical Abstracts Service) name.

OBS

acephylline piperazine: International Nonproprietary Name (INN) of the World Health Organization (WHO).

OBS

Also known under the following trade names: Dynaphylline; Etaphylline; Etafillina; Etaphydel; Etophylate.

OBS

Chemical formula: C13H20N6O4

French

Domaine(s)
  • Éléments et composés chimiques
  • Médicaments
Entrée(s) universelle(s)
OBS

Analeptique cardiorespiratoire.

OBS

composé de l'acide 2-(1,3-diméthyl-2,6-dioxo-1,2,3,6-tétrahydro-7H-purin-7-yl)acétique avec la pipérazine (1/1) : La lettre majuscule «H» s'écrit en italique; forme recommandée par l'UICPA (Union internationale de chimie pure et appliquée).

OBS

2-(1,3-diméthyl-2,6-dioxo-1,2,3,6-tétrahydro-7H-purin-7-yl)acétate de pipérazine : nom UICPA; la lettre majuscule «H» s'écrit en italique.

OBS

1,2,3,6-tétrahydro-1,3-diméthyl-2,6-dioxo-7H-purine-7-acétate de pipérazine : La lettre majuscule «H» s'écrit en italique; nom CAS (Chemical Abstracts Service); en français c'est la forme UICPA qu'il convient d'utiliser.

OBS

acéphylline pipérazine : dénomination commune internationale (DCI) de l'OMS (Organisation mondiale de la santé).

OBS

Formule chimique : C13H20N6O4

Spanish

Campo(s) temático(s)
  • Elementos y compuestos químicos
  • Medicamentos
Entrada(s) universal(es)
OBS

Fórmula química: C13H20N6O4

Save record 6

Record 7 2011-08-29

English

Subject field(s)
  • Chemical Elements and Compounds
Universal entry(ies)
C14H16N2
formula, see observation
[C6H3(CH3)NH2]2
formula, see observation
119-93-7
CAS number
DEF

A chemical compound having the formula C6sub>H3</sub>(CH3) NH2]2 which appears under the form of white to reddish, glistening plates and is used in dyes, as a sensitive reagent for gold, a curing agent for urethane resins and for free chlorine in water.

OBS

The prefixes "ortho-," "meta-" and "para-," along with their corresponding abbreviations ("o-," "m-" and "p-"), appear in italics and are ignored in alphabetizing. According to the actual chemical nomenclature rules in organic chemistry (in 2003), the numbers designating the positions of the disubstitution groups (1,2- for "ortho-," 1,3- for "meta-" and 1,4- for "para-") are to be preferred to the symbols "o-," "m-" and "p-." Furthermore, the prefixes "ortho-," "meta-" and "para-" should not be used anymore, and their corresponding abbreviations ("o-," "m-," and "p-") will soon be judged to be avoided, if not totally condemned.

OBS

Chemical formula: C14H16 N2 or C6H3(CH3)NH2]2

French

Domaine(s)
  • Éléments et composés chimiques
Entrée(s) universelle(s)
C14H16N2
formula, see observation
[C6H3(CH3)NH2]2
formula, see observation
119-93-7
CAS number
DEF

Produit chimique se présentant sous la forme de plaques blanches ou rougeâtres étincelantes que l'on utilise comme colorant ou comme agent réactif.

OBS

3,3'-diméthyl-[1,1'-biphényl]-4,4'-diamine : forme recommandée par l'UICPA (Union internationale de chimie pure et appliquée) pour le nom systématique correspondant au numéro CAS indiqué sur la présente fiche.

OBS

Les préfixes de position «ortho-», «méta-» et «para-», tout comme les abréviations correspondantes «o-», «m-» et «p-», s'écrivent en italique et n'interviennent pas dans une classification par ordre alphabétique. Selon les règles de nomenclature de chimie organique en vigueur aujourd'hui (en 2003), il est recommandé d'utiliser les chiffres 1,2-, 1,3- et 1,4-, respectivement. Les préfixes «ortho-», «méta-» et «para-» ne doivent plus être utilisés. L'usage des symboles correspondants («o-», «m-» et «p-») sera bientôt fortement déconseillé, sans être exclu.

OBS

bi-;di- : Ces préfixes s'écrivent en italique.

OBS

Formule chimique : C14H16N2 ou [C6H3(CH3)NH22

Spanish

Campo(s) temático(s)
  • Elementos y compuestos químicos
Entrada(s) universal(es)
C14H16N2
formula, see observation
[C6H3(CH3)NH2]2
formula, see observation
119-93-7
CAS number
OBS

Fórmula química: C14H16 N2 o C6H3(CH3)NH2]2

Save record 7

Record 8 2011-08-26

English

Subject field(s)
  • Chemical Elements and Compounds
Universal entry(ies)
C5H10O2
formula, see observation
CH3COOCH(CH3)2
formula, see observation
108-21-4
CAS number
DEF

A chemical compound having the formula C5sub>H10</sub>O2 or CH3COOCH(CH3) 2, appearing under the form of a colorless liquid with an aromatic odour, derived by reacting isopropyl alcohol with acetic acid in the presence of catalysts, used as a solvent for nitrocellulose and resin gums, in paints, lacquers and printing inks, in organic synthesis and perfumery.

French

Domaine(s)
  • Éléments et composés chimiques
Entrée(s) universelle(s)
C5H10O2
formula, see observation
CH3COOCH(CH3)2
formula, see observation
108-21-4
CAS number
OBS

isopropanolamine : nom commercial.

OBS

Formule chimique : C5H10O2 ou CH3COOCH(CH3)2

Spanish

Campo(s) temático(s)
  • Elementos y compuestos químicos
Entrada(s) universal(es)
C5H10O2
formula, see observation
CH3COOCH(CH3)2
formula, see observation
108-21-4
CAS number
OBS

Fórmula química : C5H10O2 o CH3COOCH(CH3)2

Save record 8

Record 9 2011-08-26

English

Subject field(s)
  • Chemical Elements and Compounds
  • Biochemistry
  • Plastics Manufacturing
  • Tanning and Tanning Oils (Leather Ind.)
Universal entry(ies)
HOCH2CH2OCHO
formula, see observation
C3H6O3
formula, see observation
56-82-6
CAS number
DEF

A sweet crystalline compound that exists in solution as the monomeric dihydroxy aldehyde HOCH2CHOHCHO in dextrorotatory, levorotatory, and racemic forms but in the anhydrous state only as the crystalline dimer C6sub>H12</sub>O6, that is formed as an intermediate in carbohydrate metabolism by the breakdown of sugars, that yields glycerol on reduction, and that may be regarded as a triose and the simplest aldose capable of existing in both D-and L-stereoisomeric forms, which serve as reference standards for differentiating the stereoisomeric forms of all other sugars and also of other stereoisomeric compounds.

OBS

The simplest chiral sugar. Its dextrorotatory form, D-glyceraldehyde, was taken as the standard of D configuration for sugars.

OBS

This compound is used in biochemical research, as an intermediate, in nutrition, in the preparation of polyesters, in adhesives, as a cellulose modifier, in leather tanning.

OBS

Chemical formula: HOCH2CH2OCHO or C3H6O3

French

Domaine(s)
  • Éléments et composés chimiques
  • Biochimie
  • Plasturgie
  • Tannin et huile de tannage (Ind. du cuir)
Entrée(s) universelle(s)
HOCH2CH2OCHO
formula, see observation
C3H6O3
formula, see observation
56-82-6
CAS number
DEF

Le plus simple des aldoses contenant un atome de carbone chiral.

OBS

Depuis Emil Fischer, le glycéraldéhyde est pris comme composé de référence pour désigner la configuration des sucres.

OBS

Formule chimique : HOCH2CH2OCHO ou C3H6O3

Spanish

Campo(s) temático(s)
  • Elementos y compuestos químicos
  • Bioquímica
  • Fabricación de plásticos
  • Curtido y aceites para curtido (Ind. del cuero)
Entrada(s) universal(es)
HOCH2CH2OCHO
formula, see observation
C3H6O3
formula, see observation
56-82-6
CAS number
OBS

Fórmula química: HOCH2CH2OCHO o C3H6O3

Save record 9

Record 10 2011-08-26

English

Subject field(s)
  • Chemical Elements and Compounds
Universal entry(ies)
NH2NH2
formula, see observation
H2N-NH2
formula, see observation
H4N2
formula, see observation
302-01-2
CAS number
DEF

A chemical compound having the formula NH2NH2 or H2</sub>N-NH2 or H4</sub>N2 which appears under the form of a colourless, oily, fuming, corrosive oily liquid, is a weaker base than ammonia, is usually made by dehydration of hydrazine hydrate, and which is used chiefly as a component of fuels for rocket and jet engines and in making salts(as the sulfates) and organic derivatives, but also as a blowing agent, a buoyancy agent for undersea salvage, an antioxidant(petroleum, detergents), a polymerization catalyst, a reactor cooling water, a scavenger for gases, a short-stopping agent, in agricultural chemicals, boiler feedwater, corrosion inhibitors, drugs(antibacterials, antihypertension), explosives, fuel cells, photographic developers, plating metals on glass and plastics, solder fluxes and Spandex fibers.

OBS

hydrazine: form recommended by the IUPAC (International Union of Pure and Applied Chemistry).

OBS

hydrazine: Exists also in the form of a hydrate (q.v.).

OBS

NH2NH2; H2N-NH2; H4N2

French

Domaine(s)
  • Éléments et composés chimiques
Entrée(s) universelle(s)
NH2NH2
formula, see observation
H2N-NH2
formula, see observation
H4N2
formula, see observation
302-01-2
CAS number
DEF

Produit chimique de formule NH2NH2 ou H2N-NH2 ou H4N2 se présentant sous la forme d'un liquide très toxique, corrosif et miscible à l'eau, fondant à 2 °C et bouillant à 113 °C, fabriqué industriellement par action de l'hypochlorite de sodium sur l'ammoniac ou l'urée.

CONT

[...] l'hydrazine [...] est une base moyenne [...] et un réducteur. Dans ses emplois d'ergol pour fusée, elle est en partie remplacée par la diméthylhydrazine. On l'utilise aussi comme désoxygénant pour l'eau des chaudières, comme agent gonflant des matières plastiques et comme combustible dans les piles à combustible.

OBS

NH2NH2; H2N-NH2; H4N2

Spanish

Campo(s) temático(s)
  • Elementos y compuestos químicos
Entrada(s) universal(es)
NH2NH2
formula, see observation
H2N-NH2
formula, see observation
H4N2
formula, see observation
302-01-2
CAS number
OBS

Fórmula química: NH2NH2 o H2N-NH2 o H4N2

Save record 10

Record 11 2011-08-22

English

Subject field(s)
  • Chemical Elements and Compounds
  • Pharmacy
  • Food Additives
  • Pulp Preparation (papermaking)
Universal entry(ies)
H2O2
formula, see observation
H—O—O—H
formula, see observation
7722-84-1
CAS number
DEF

A binary compound of hydrogen and oxygen, empirical formula H2</sub>O2, used mostly in dilute aqueous solutions as an oxidizing agent [and of which the] most remarkable feature is its tendency to decompose readily into water and oxygen, the first instance of contact analysis.

OBS

Use: Bleaching and deodorizing of textiles, wood pulp, hair, fur, etc.; source of organic and inorganic peroxides; pulp and paper industry; plasticizers; rocket fuel; foam rubber; manufacture of glycerol; antichlor; dyeing; electroplating; antiseptic; laboratory reagent; epoxidation, hydroxylation, oxidation, and reduction; viscosity control for starch and cellulose derivatives; refining and cleaning metals; bleaching and oxidizing agent in foods; neutralizing agent in wine distillation; seed disinfectant; substitute for chlorine in water and sewage treatment.

OBS

Also known under a large number of commercial designations, such as: Albone; Hioxyl; Inhibine; Interox; Kastone; Oxydol; Perhydrol (hydroxide peroxide 30%, q.v.); Perone; Peroxan; Superoxol.

OBS

hydrogen peroxide: Refers to the anhydrous form (i.e. "anhydrous hydrogen peroxide"), but the term is also commonly used for hydrogen peroxide solutions (marketed as solutions in water concentrations of 3 to 90% by weight). See also "hydrogen peroxide solution."

OBS

hydrogen peroxide: form recommended by the IUPAC (International Union of Pure and Applied Chemistry).

OBS

peroxide: This term is used in common usage as an abbreviation for "hydrogen peroxide" but must not be considered as a true synonym of this latter term in a systematic sense; it does not correspond to the CAS number for "hydrogen peroxide."

OBS

Molecular formula: H2O2; Structural formula: H—O—O—H

Key term(s)
  • anhydrous hydrogen peroxide

French

Domaine(s)
  • Éléments et composés chimiques
  • Pharmacie
  • Additifs alimentaires
  • Préparation de la pâte à papier
Entrée(s) universelle(s)
H2O2
formula, see observation
H—O—O—H
formula, see observation
7722-84-1
CAS number
DEF

[...] espèce chimique [de] formule H2O2 [qui] se présente sous la forme d'un liquide bleu pâle sirupeux, qui se solidifie à -0,46 °C et qui est nettement plus dense que l'eau [...]

CONT

On distingue notamment : a) l'eau oxygénée concentrée, solution aqueuse acide contenant 30 % en poids de peroxyde d'hydrogène, utilisée avec précautions contre certaines lésions de la peau; b) l'eau oxygénée officinale, contenant environ 3 % en poids (8 à 12 % en volume) de peroxyde d'hydrogène, utilisée comme hémostatique et comme désinfectant. L'eau oxygénée concentrée à 20 volumes est utilisée pour la décoloration des cheveux.

CONT

On ne peut faire bouillir l'eau oxygénée pure sous la pression atmosphérique normale, car le liquide se décompose auparavant; il est en effet thermodynamiquement instable à la température ordinaire [...]

OBS

On appelle ordinairement eau oxygénée les mélanges d'eau et de peroxyde d'hydrogène.

OBS

peroxyde d'hydrogène : forme recommandée par l'UICPA (Union internationale de chimie pure et appliquée).

OBS

peroxyde : Ce terme est utilisé dans la vie courante comme abréviation de «peroxyde d'hydrogène», mais n'est pas un synonyme de ce dernier terme au sens strict; ce nom ne correspond pas au numéro CAS (du Chemical Abstracts Service) pour le peroxyde d'hydrogène. La prudence s'impose donc dans son emploi. Voir aussi l'autre fiche pour «peroxyde».

OBS

À une concentration de 30 % il est commercialisé sous le nom de «Perhydrol» (voir aussi cette fiche).

OBS

Formule chimique : H2O2

Spanish

Campo(s) temático(s)
  • Elementos y compuestos químicos
  • Farmacia
  • Aditivos alimentarios
  • Preparación de la pasta (fabricación de papel)
Entrada(s) universal(es)
H2O2
formula, see observation
H—O—O—H
formula, see observation
7722-84-1
CAS number
OBS

Líquido incoloro, insoluble en alcohol y agua. Las soluciones concentradas son tóxicas e irritantes. Riesgo de explosión. Agente oxidante.

OBS

Fórmula química: H2O2

Save record 11

Record 12 2011-08-22

English

Subject field(s)
  • Plastics Manufacturing
  • Rubber
Universal entry(ies)
C10H21Cl
formula, see observation
DEF

A commercial term referring to a chemical compound comprising mixed isomers, having the formula C10sub>H21</sub>Cl, appearing under the form of a combustible, colorless liquid, used as a solvent for oils, fats, greases, resins, gums, in extractants and cleaning compounds, as an intermediate for insecticides, pharmaceuticals, plasticizers, polysulfide rubbers, resins and cationic surfactants.

OBS

The decyl "chain" as shown in formulas 5 through 9 is termed a "straight chain", as one carbon follows another, like the links of a chain. Structures 15 or 16 are termed "branched chains". [An illustration of the formulas follows.] The overall formula for 5-7, C10H21Cl, is the same. Formulas 5-7 each represents "decyl chloride." However 15 and 16 differ in a crucial way. The difference is that formulas 15 and 16 have two "CH3" groups near the left end of the molecule. This is seen more easily in 17, a "condensed formula" that is equivalent to the "line formula" 15. Furthermore, 15 to 17 have a single "CH" group present, whereas 7 has no "CH" groups, only "CH3" and "CH2" groups. The new structure 15 or 17 carries a different name: "isodecyl chloride."

French

Domaine(s)
  • Plasturgie
  • Caoutchouc
Entrée(s) universelle(s)
C10H21Cl
formula, see observation
OBS

chlorure d'isodécyle : terme commercial.

OBS

Formule chimique : C10H21Cl

Spanish

Campo(s) temático(s)
  • Fabricación de plásticos
  • Caucho
Entrada(s) universal(es)
C10H21Cl
formula, see observation
OBS

Fórmula química : C10H21Cl

Save record 12

Record 13 2011-03-23

English

Subject field(s)
  • Chemical Elements and Compounds
  • Biochemistry
  • Food Additives
Universal entry(ies)
DEF

A chemical compound having the formula C5sub>H9</sub>NO4 or HOCO-(CH2) 2-CHNH2-COOH which appears under the form of a white, odorless, crystalline powder, is slightly soluble in cold water, is insoluble in organic solvents, constitutes a non-essential amino acid, and is used as a salt substitute and to improve the taste of beer.

CONT

The truth of the matter is that the glutamic acid found in unprocessed, unadulterated food and in the human body is composed of one form of a single amino acid, L-glutamic acid, and nothing else. In contrast, the processed free glutamic acid used in processed food is always composed of two forms of glutamic acid (L-glutamic acid and D-glutamic acid) and a variety of other chemicals commonly referred to as contaminants.

OBS

L-glutamic acid: Corresponds to the naturally occurring form (see the above context). The prefix "L-" is a small capital.

OBS

E: one-letter chemical symbol.

OBS

Glu: three-letter chemical symbol.

OBS

The word "alpha" must be replaced by the corresponding Greek letter or italicized.

OBS

Chemical formula: C5H9NO4 or HOCO-(CH2)2-CHNH2-COOH

Key term(s)
  • α-aminoglutaric acid
  • α-amino-glutaric acid
  • α-glutamic acid

French

Domaine(s)
  • Éléments et composés chimiques
  • Biochimie
  • Additifs alimentaires
Entrée(s) universelle(s)
E
symbol
Glu
symbol
C5H9NO4
formula, see observation
HOCO-(CH2)2-CHNH2-COOH
formula, see observation
56-86-0
CAS number
DEF

Aminoacide de formule C5H9NO4 ou HOCO-(CH2)2-CHNH2-COOH que l'on peut préparer par synthèse totale ou par fermentation des glucides, que l'on emploie comme condiment et comme additif pour l'alimentation du bétail, et dont l'antipode L, dextrogyre, est un constituant essentiel des protéines.

OBS

acide L-glutamique : Correspond à la forme au naturel (voir aussi «acide D-glutamique», qui se rapporte à un énantiomère de l'acide L-glutamique); les lettres «L» et «D» sont des petites capitales.

OBS

E : symbole chimique à une lettre.

OBS

Glu : symbole chimique à trois lettres.

OBS

Le mot «alpha» doit être remplacé par la lettre grecque correspondante ou être écrit en italique.

OBS

Formule chimique : C5H9NO4 ou HOCO-(CH2)2-CHNH2-COOH

Key term(s)
  • acide α-amino-glutarique
  • acide α-aminoglutarique

Spanish

Campo(s) temático(s)
  • Elementos y compuestos químicos
  • Bioquímica
  • Aditivos alimentarios
Entrada(s) universal(es)
E
symbol
Glu
symbol
C5H9NO4
formula, see observation
HOCO-(CH2)2-CHNH2-COOH
formula, see observation
56-86-0
CAS number
OBS

Aminoácido no esencial. No tóxico. Cristales. Prácticamente insoluble en éter, acetona y ácido acético glacial. Insoluble en alcohol etílico y metanol.

OBS

Fórmula química: C5H9NO4 o HOCO-(CH2)2-CHNH2-COOH

Save record 13

Record 14 2011-03-21

English

Subject field(s)
  • Biochemistry
DEF

A reddish yellow crystalline compound C10sub>H5</sub>O2(OH) that is obtained esp. from green shucks of walnuts and is the chief active principle of the brown hair dye from walnuts; 5-hydroxy-1, 4-naphthoquinone.

French

Domaine(s)
  • Biochimie
DEF

Composé de brou de noix, C10H6O3 : c'est l'hydroxy-5 naphtoquinone-1,4.

Spanish

Save record 14

Record 15 2011-03-18

English

Subject field(s)
  • Chemical Elements and Compounds
  • Paints and Varnishes (Industries)
  • Food Industries
  • Perfume and Cosmetics Industry
Universal entry(ies)
C6H1202
formula, see observation
C4H9OOCCH3
formula, see observation
110-19-0
CAS number
DEF

A chemical compound having the formula C6sub>H12</sub>O2 or C4sub>H9</sub>OOCCH3 which appears under the form of a colorless, flammable, neutral liquid with a fruitlike odour, is derived by treating isobutanol with acetic acid in the presence of catalysts, and is used as a solvent for nitrocellulose, in thinners, sealants and topcoat lacquers, in perfumery and as an artificial flavouring agent(strawberry, raspberry, butter, banana) for beverages, candy and pastries.

OBS

2-methylpropyl acetate: form recommended by the IUPAC (International Union of Pure and Applied Chemistry).

Key term(s)
  • beta-methylpropyl ethanoate

French

Domaine(s)
  • Éléments et composés chimiques
  • Peintures et vernis (Industries)
  • Industrie de l'alimentation
  • Parfumerie
Entrée(s) universelle(s)
C6H1202
formula, see observation
C4H9OOCCH3
formula, see observation
110-19-0
CAS number
DEF

Composé chimique de formule C6H12O2 ou C4H9OOCCH3 se présentant sous la forme d'un liquide incolore, inflammable, à odeur fruitée, utilisé comme solvant, en parfumerie et comme arôme artificiel (fraise, framboise, beurre, banane) pour les boissons, les confiseries et les pâtisseries.

OBS

acétate de 2-méthylpropyle : forme recommandée par l'UICPA (Union internationale de chimie pure et appliquée).

Key term(s)
  • éthanoate de bêta-méthylpropyl

Spanish

Campo(s) temático(s)
  • Elementos y compuestos químicos
  • Pinturas y barnices (Industrias)
  • Industria alimentaria
  • Industria del perfume y cosméticos
Entrada(s) universal(es)
C6H1202
formula, see observation
C4H9OOCCH3
formula, see observation
110-19-0
CAS number
DEF

Líquido neutro, incoloro, olor a fruta. Soluble en alcoholes, éter e hidrocarburos. Inmiscible con agua. Inflamable. Riesgo de incendio. Moderadamente tóxico.

OBS

Fórmula química: C6H12O2 ou C4H9OOCCH3

Save record 15

Record 16 2010-12-23

English

Subject field(s)
  • Chemical Elements and Compounds
Universal entry(ies)
N2H4·H2O
formula, see observation
H4N2·H2O
formula, see observation
7803-57-8
CAS number
DEF

A chemical compound having the formula N2sub>H4</sub>·H2</sub>O or H4</sub>N2sub>·H2</sub>O which appears under the form of a colourless, toxic, fuming liquid which boils at 120-121°C.

OBS

hydrazine hydrate: A generic term compared with "hydrazine monohydrate", but may be considered as a synonym when mixed with one molecule of water. Compare with anhydrous hydrazine.

OBS

Chemical formula: N2H4·H2O or H4N2·H2O

French

Domaine(s)
  • Éléments et composés chimiques
Entrée(s) universelle(s)
N2H4·H2O
formula, see observation
H4N2·H2O
formula, see observation
7803-57-8
CAS number
DEF

Produit chimique qui se présente sous la forme d'un liquide incolore, toxique, fumant, dont le point d'ébullition est de 120-121 °C.

OBS

hydrazine hydrate : Terme générique en comparaison avec «hydrazine monohydrate», considérée comme un parfait synonyme lorsqu'en mélange avec une molécule d'eau. Voir aussi hydrazine.

OBS

Formule chimique : N2H4·H2O ou H4N2·H2O

Spanish

Campo(s) temático(s)
  • Elementos y compuestos químicos
Entrada(s) universal(es)
N2H4·H2O
formula, see observation
H4N2·H2O
formula, see observation
7803-57-8
CAS number
OBS

Fórmula química: N2H4·H2O o H4N2·H2O

Save record 16

Record 17 2010-09-21

English

Subject field(s)
  • Chemical Elements and Compounds
Universal entry(ies)
C6H5CONHCH2COOH
formula, see observation
C9H9NO3
formula, see observation
495-69-2
CAS number
DEF

A chemical compound having the formula C6sub>H5</sub>CONHCH2COOH or C9sub>H9</sub>NO3 which appears under the form of colorless crystals, has a melting point of 188°C, decomposes on further heating, is soluble in hot water, alcohol and ether, and is used in organic synthesis and in medicine.

OBS

N-benzoylglycin; N-benzoylglycine: The capital letter "N" must be italicized.

French

Domaine(s)
  • Éléments et composés chimiques
Entrée(s) universelle(s)
C6H5CONHCH2COOH
formula, see observation
C9H9NO3
formula, see observation
495-69-2
CAS number
OBS

N-benzoylglycine : La lettre majuscule «N» s'écrit en italique.

OBS

Formule chimique : C6H5CONHCH2COOH ou C9H9NO3

Spanish

Campo(s) temático(s)
  • Elementos y compuestos químicos
Entrada(s) universal(es)
C6H5CONHCH2COOH
formula, see observation
C9H9NO3
formula, see observation
495-69-2
CAS number
OBS

Cristales incoloros, solubles en agua caliente, alcohol y éter. Producto de excreción del organismo animal, aparece especialmente en la orina del caballo.

OBS

Fórmula química: C6H5CONHCH2COOH o C9H9NO3

Save record 17

Record 18 2009-05-25

English

Subject field(s)
  • Chemistry
DEF

An organic compound containing the-C[ triple bond] N grouping, for example, acrylonitrile H2</sub>C : CHC[ triple bond] N; it may also contain a triple bond as an acetonitrile(CH3C=[triple bond] N).

French

Domaine(s)
  • Chimie
DEF

Nom générique des dérivés de l'acide cyanhydrique, de formule générale R-C=[liaison triple]N.

Spanish

Campo(s) temático(s)
  • Química
DEF

Nombre de los compuestos que tienen la fórmula general r-C[triple enlace]N, en la cual r es un radical alcohólico o fenólico [...]

Save record 18

Record 19 2008-05-15

English

Subject field(s)
  • Chemical Elements and Compounds
CONT

An isopoly anion is a metal oxide compound comprising oxygen and a metal selected from the group consisting of molybdenum VI, tungsten VI, vanadium V, niobium V and tantalum V. An example of an isopoly anion is H2</sub>W12O40-6. A heteropoly anion is a metal oxide compound comprising oxygen, an element such as phosphorus, arsenic, silicon, germanium, boron, aluminum or many first row transition metals, such as iron or cobalt and a metal selected from the group consisting of molybdenum VI, tungsten VI, vanadium V, niobium V and tantalum V.

CONT

Synthesis, structure, and molecular modeling of a titanoniobate isopolyanion.

OBS

comb. form: containing several groups or ions of the same acid forming element

French

Domaine(s)
  • Éléments et composés chimiques
DEF

Polyanion issu de deux sels identiques ne différant que par la forme allotropique du métal.

CONT

De nombreuses études concernant les pollyoxométallates ont montré que leur électrochimie est relativement complexe et dépend de plusieurs paramètres tels que la nature du matériau d'électrode, la composition du milieu ... etc. Les hétéropolyanions et isopolyanions sont également connus pour leurs excellentes propriétés catalytiques.

Spanish

Save record 19

Record 20 2005-04-25

English

Subject field(s)
  • Chemical Elements and Compounds
  • Explosives and Pyrotechnical Materials (Industries)
CONT

Yousef’s bomb was a devilish mixture of nitro-glycerine, urea pellets, sulphuric acid, aluminium azide, magnesium azide and bottled hydrogen.

CONT

The reaction of aluminum triethyl with chlorine azide at 0° leads to the thus far unknown trimeric diethyl aluminium azide [(C2sub>H5</sub>) 2AlN3]3. This compound is a colourless hygroscopic liquid(m. p.-130°) which can be distilled in vacuo without decomposition.

CONT

Most Americans probably think the Islamic terrorists declared war on the United States Sept. 11, 2001. For that matter most Americans have forgotten the 1993 Muslim terrorist bombing of the Towers (1,200+ lb. bomb, made of urea pellets, nitroglycerin, sulfuric acid, aluminum azide, magnesium azide, and bottled hydrogen.)

OBS

The International Union of Pure and Applied Chemistry (IUPAC) recommends the form "aluminium" rather than "aluminum."

French

Domaine(s)
  • Éléments et composés chimiques
  • Explosifs et artifices (Industries)

Spanish

Save record 20

Record 21 2004-03-09

English

Subject field(s)
  • Chemistry
CONT

Acetic acid has only one ionizable hydrogen and is called monobasic. Some other acids have two or even three ionizable hydrogens and are called polybasic.

OBS

polybasic. A chemical compound in solution that yields two or more H+ ions per molecule, such as sulfuric acid, H2</sub>SO4.

French

Domaine(s)
  • Chimie
DEF

Corps qui libère plusieurs cations H+ par molécules.

Spanish

Campo(s) temático(s)
  • Química
DEF

Todo ácido que contiene dos o más equivalentes-gramo de hidrógeno por cada mol.

Save record 21

Record 22 2003-11-17

English

Subject field(s)
  • Chemical Elements and Compounds
DEF

Compound in which the ring structure is a combination of more than one kind of atom; for example pyridine, C5sub>H5</sub>N.

French

Domaine(s)
  • Éléments et composés chimiques
DEF

Chaîne fermée d'un composé organique cyclique, comportant un ou plusieurs hétéroatomes.

CONT

Le furanne, la pyridine sont des composés hétérocycliques.

Spanish

Campo(s) temático(s)
  • Elementos y compuestos químicos
DEF

Compuesto cíclico del carbono formado además por otros átomos.

Save record 22

Record 23 2003-04-15

English

Subject field(s)
  • Chemical Elements and Compounds
  • Missiles and Rockets
Universal entry(ies)
CONT

The projectile’s rocket motor ... contains about 0.5 kg of aluminised rubbery HTPB (hydroxy-terminated polybutadiene) propellant set in an intricate shape to give the maximum possible burning area.

CONT

The liquid hydroxy-terminated polybutadiene Krasol LBH 3000 was used as a polyol for the preparation of polyurethane elastomers. ... Size exclusion chromatography and liquid adsorption chromatography were used to characterise low-molecular weight hydroxy-terminated polybutadienes prepared by anionic polymerisation.

CONT

hydroxy terminated polybutadiene (1, 2 addition), ... hydroxy terminated polybutadiene (1, 4 addition) ...

OBS

hydroxy-:[A] chemical prefix indicating the OH group in an organic compound, such as hydroxybenzene for phenol, C6sub>H5</sub>OH... [oxy-and hydroxyl-are to be avoided in this sense. ]

OBS

HTPB: This might be an in-house or a non-recognized abbreviation; not to be used alone, to avoid any risk of confusion.

French

Domaine(s)
  • Éléments et composés chimiques
  • Missiles et roquettes
Entrée(s) universelle(s)
CONT

Le moteur-fusée du projectile [...] contient 500 g de polybutadiène hydroxylé, à charge d'aluminium et d'élastomères. Sa forme est étudiée pour que la surface de combustion soit aussi grande que possible.

CONT

Liants, plastifiants, monomères et polymères, comme suit : [...] HTPB (polybutadiène terminé par un hydroxyle) ayant une fonctionnalité hydroxyle égale ou supérieure à 2,2 et inférieure ou égale à 2,4, un indice d'hydroxyle inférieur à 0,77 méq/g, et une viscosité à 30 °C inférieure à 47 poises [...]

OBS

HTPB; PBHT : abréviations non officielles; ne pas les utiliser seules, pour éviter tout risque de confusion.

Spanish

Save record 23

Record 24 2003-04-15

English

Subject field(s)
  • Chemical Elements and Compounds
  • Chemistry
DEF

[A] chemical prefix indicating the OH group in an organic compound, such as hydroxybenzene for phenol, C6sub>H5</sub>OH...

OBS

... the use of just oxy- for the prefix is incorrect.

Key term(s)
  • hydroxy
  • hydroxyl
  • oxy

French

Domaine(s)
  • Éléments et composés chimiques
  • Chimie
DEF

Préfixe servant à désigner dans un corps organique, la substitution d'un atome d'hydrogène par le radical monovalent -OH.

OBS

hydroxy- : Ce préfixe doit remplacer la désignation «oxy», incorrecte dans ce cas.

Key term(s)
  • hydroxy
  • hydrox
  • oxy

Spanish

Save record 24

Record 25 2003-03-03

English

Subject field(s)
  • Chemical Elements and Compounds
OBS

hydroxy-:[A] chemical prefix indicating the OH group in an organic compound, such as hydroxybenzene for phenol, C6sub>H5</sub>OH... [oxy-and hydroxyl-are to be avoided in this sense. ]

French

Domaine(s)
  • Éléments et composés chimiques
OBS

hydroxy- : Préfixe servant à désigner dans un corps organique, la substitution d'un atome d'hydrogène par le radical monovalent -OH. [Il est à noter que ce] préfixe doit remplacer la désignation «oxy», incorrecte dans ce cas.

Spanish

Save record 25

Record 26 2000-03-14

English

Subject field(s)
  • Chemical Elements and Compounds
  • Pharmacy
DEF

A compound of choline and theophylline, C12sub>H21</sub>N5O3, occurring as a white crystalline powder, having the same actions as the parent compound; used chiefly as a bronchodilator...

French

Domaine(s)
  • Éléments et composés chimiques
  • Pharmacie

Spanish

Save record 26

Record 27 1999-03-05

English

Subject field(s)
  • Rubber
CONT

The rubber hydrocarbon is a chemical compound composed of two elements, carbon and hydrogen, and having the general formula(C5sub>H8</sub>) n. The rubber hyrdrocarbon is present in latex as a suspension of minute particles varying in size from 4 to 20 millionths of an inch(0. 1-0. 5 micrometer). The largest particles can be viewed under the ultramicroscope and are seen to be in constant motion, exhibiting the phenomenon known as Brownian movement.

French

Domaine(s)
  • Caoutchouc

Spanish

Campo(s) temático(s)
  • Caucho
Save record 27

Record 28 1998-02-13

English

Subject field(s)
  • Chemistry
OBS

A selectively labelled compound may be multiply labelled when in the unmodified compound there is more than one atom of the same element at the position where the isotopic modification occurs, e. g., H in CH4, or there are several atoms of the same element at different positions where the isotopic modification occurs, e. g., C in C4 H8</sub> O.

French

Domaine(s)
  • Chimie
OBS

Un composé sélectivement marqué peut être marqué d'une façon multiple lorsque, dans le composé non modifié, il existe plus d'un atome du même élément dans la position où la modification isotopique se produit (comme le H and CH4) ou lorsque plusieurs atomes du même élément sont présents dans des positions différentes de la molécule où des modifications isotopiques peuvent se produire (comme le C dans C4 H8 O.

Spanish

Save record 28

Record 29 1998-01-21

English

Subject field(s)
  • Chemistry
CONT

Whereas in an aromatic molecule there is continuous overlap of p-orbitals over a cyclic array of atoms, in a homoaromatic molecule there is a formal discontinuity in this overlap resulting from the presence of a single sp3 hybridized atom within the ring; p-orbital overlap apparently bridges this sp3 centre, and features associated with aromaticity are manifest in the properties of the compound. Pronounced homoaromaticity is not normally associated with neutral molecules, but mainly with species bearing a formal electrical charge, e. g., the "homotropylium" cation C8 H9</sub>+...

OBS

In bis-, tris-, (etc.) homoaromatic species, two, three, (etc.) single sp3 centres separately interrupt the [pi]-electron system.

French

Domaine(s)
  • Chimie
CONT

Tandis que dans une molécule aromatique il y a recouvrement continu des orbitales p tout au long d'un ensemble cyclique d'atomes, une molécule homoaromatique comporte une discontinuité formelle due à la présence d'un atome d'hybridation sp3 [et d'un seul) au sein du cycle. Apparemment, le recouvrement des orbitales p crée un pont entre les atomes de carbone adjacents au centre sp3 et l'on observe pour le composé des propriétés caractéristiques, associées à l'aromaticité. Normalement, on n'observe pas d'homoaromaticité prononcée pour des molécules neutres; elle apparaît principalement pour des espèces portant une charge électrique formelle, par exemple pour le cation "homotropylium" C8 H9 [...]

OBS

Des espèces bis, tris-, (etc.) homoratomatiques comportent respectivement deux, trois etc. centres sp3 isolés interrompant le système d'électrons-[pi].

Spanish

Save record 29

Record 30 1993-05-18

English

Subject field(s)
  • Pulp Preparation (papermaking)
DEF

The transformation of unstable sodium sulfide(Na2S) to the more stable sodium thiosulfate(Na2S2O3) in black liquor by the use of air or oxygen(O2) so that objectionable hydrogen sulfide(H2</sub>S) and organic sulfur compound formation in its evaporation and combustion are minimized, thus preventing their loss from the sulfate recovery process. The treated liquid is called oxidized black liquor.

French

Domaine(s)
  • Préparation de la pâte à papier
CONT

L'oxydation de la liqueur noire sert à convertir le soufre en thiosulfate [...] L'oxydation a été mise de l'avant dans les années cinquante pour réduire les odeurs. En le convertissant en thiosulfate, on stabilise le soufre de la liqueur, évitant ainsi sa transformation en gaz hydrogène sulfureux par les gaz chauds dans l'évaporateur à contact direct [...]

Spanish

Save record 30

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