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HCO [16 records]

Record 1 2013-08-30

English

Subject field(s)
  • Chemical Elements and Compounds
  • Synthetic Fabrics
Universal entry(ies)
DEF

A white crystalline cyclic amide that yields epsilon-amino-caproic acid on hydrolysis and is used chiefly in making one type of nylon.

CONT

Caprolactam is used in the manufacture of synthetic fibers (especially nylon 6), plastics, bristles, film, coatings, synthetic leather, plasticizers, and paint vehicles, cross-linking agent for polyurethanes, synthesis of amino acid lysine.

OBS

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

OBS

epsilon: This word must be replaced by the corresponding greek letter or italicized.

OBS

Chemical formula : CH2(CH2) 4sub>HCO or C6H11NO

French

Domaine(s)
  • Éléments et composés chimiques
  • Textiles artificiels et synthétiques
Entrée(s) universelle(s)
DEF

Amide cyclique d'un acide aminocaproïque.

CONT

L'e-caprolactame conduit par polymérisation au polyamide-6, le Perlon, comparable au Nylon et utilisé pour fabriquer des textiles synthétiques.

OBS

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

OBS

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

OBS

Formule chimique : CH2(CH2)3NHCO ou C6H11NO

Spanish

Campo(s) temático(s)
  • Elementos y compuestos químicos
  • Tejidos sintéticos
Entrada(s) universal(es)
DEF

Monómero que, por polimerización, da policaprolactamo, conocido por el nombre comercial de Perlón, que es una fibra sintética comparable al nylon.

OBS

Fórmula química: CH2(CH2)4HCO o C6H11NO

Save record 1

Record 2 2012-10-15

English

Subject field(s)
  • Anti-pollution Measures
  • Geology
  • Climate Change
CONT

The interactions between the water and CO2 phase allow geochemical trapping mechanisms to take effect.... Dissolved CO2 can eventually react with reservoir minerals if an appropriate mineralogy is encountered to form carbon-bearing ionic species(i. e., HCO3</sub>- and CO32-) [The reaction] called ionic trapping dominates from hundreds to thousands of years.

French

Domaine(s)
  • Mesures antipollution
  • Géologie
  • Changements climatiques
CONT

Sécurité du stockage pour les différentes options envisagées. [...] Le piégeage ionique provient d'une réaction de dissolution des silicates ou des carbonates provoquée par ce CO2 dissous (bilan 0.1.2).

Spanish

Save record 2

Record 3 2012-05-01

English

Subject field(s)
  • Pharmaceutical Manufacturing
DEF

A mixture of an acid and its conjugate base (salt) that protects the active principle of a tablet against pH variation during storage for example.

OBS

Examples of buffers are H2CO3/HCO3</sub>- and H2PO4-/HPO42-.

French

Domaine(s)
  • Fabrication des produits pharmaceutiques
CONT

Substances tampons. - Elles sont ajoutées soit pour protéger les principes actifs contre les variations de pH au cours de la conservation, soit pour réduire leur action irritante au niveau des muqueuses. Exemples : sels de Ca (carbonate, citrate, phosphate, gluconate), citrate de sodium, acides aminés (glycocolle).

Spanish

Save record 3

Record 4 2011-08-22

English

Subject field(s)
  • Chemical Elements and Compounds
Universal entry(ies)
Na2CO3•NaHCO3•2H2O
formula, see observation
Na2(CO3)•Na2(HCO3)•2H2O
formula, see observation
Na2CO3,NaHCO3,2H2O
formula, see observation
DEF

A natural sodium sesquicarbonate and the most important of the natural sodas.

OBS

Chemical formula : Na2CO3•NaHCO3•2H2O or Na2(CO3) •Na2(HCO3</sub>) •2H2O

French

Domaine(s)
  • Éléments et composés chimiques
Entrée(s) universelle(s)
Na2CO3•NaHCO3•2H2O
formula, see observation
Na2(CO3)•Na2(HCO3)•2H2O
formula, see observation
Na2CO3,NaHCO3,2H2O
formula, see observation
DEF

Cristaux aciculaires incolores, d'aspect soyeux, inodores, (...). Chauffé à 100 ° dans un courant d'air sec exempt de CO2 perd son eau en donnant Na2CO3,NaHCO3 puis se transforme en carbonate neutre. (...) [Utilisation : ] poudres d'entretien et poudres à lessives, sels de toilette, lavage et essangeage des textiles, lavage des objets en aluminium et des bois peints, industrie photographique, cristallerie.

OBS

Formule chimique : Na2CO3•NaHCO3•2H2O ou Na2(CO3)•Na2(HCO3)•2H2O

Spanish

Save record 4

Record 5 2011-07-11

English

Subject field(s)
  • Chemical Elements and Compounds
  • Crop Protection
  • Freezing and Refrigerating
  • Pollutants
Universal entry(ies)
C2H4O2
formula, see observation
HCOOCH3
formula, see observation
HCO2CH3
formula, see observation
107-31-3
CAS number
DEF

A nonhalogenated hydrocarbon derivative which appears under the form of a colorless liquid with an agreeable odour and which is used as a refrigerant, a cellulose acetate solvent, a fumigant and a larvicide.

OBS

methyl formate: form recommended by the IUPAC (International Union of Pure and Applied Chemistry) for the systematic name corresponding to the CAS number indicated on the present record.

OBS

Also known under the commercial designation UN 1243.

OBS

Chemical formula : C2H4O2 or HCOOCH3 or HCO2</sub>CH3

French

Domaine(s)
  • Éléments et composés chimiques
  • Protection des végétaux
  • Congélation, surgélation et réfrigération
  • Agents de pollution
Entrée(s) universelle(s)
C2H4O2
formula, see observation
HCOOCH3
formula, see observation
HCO2CH3
formula, see observation
107-31-3
CAS number
DEF

Dérivé d'hydrocarbure non halogéné se présentant sous la forme d'un liquide incolore, d'odeur agréable, soluble dans l'eau, l'alcool, l'éther, utilisé comme frigorigène, comme solvant de l'acétate de cellulose, comme insecticide et en synthèse organique.

OBS

formiate de méthyle : 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

Formule chimique : C2H4O2 ou HCOOCH3 ou HCO2CH3

Spanish

Campo(s) temático(s)
  • Elementos y compuestos químicos
  • Protección de las plantas
  • Congelación y refrigeración
  • Agentes contaminantes
Entrada(s) universal(es)
C2H4O2
formula, see observation
HCOOCH3
formula, see observation
HCO2CH3
formula, see observation
107-31-3
CAS number
OBS

Fórmula química: C2H4O2 o HCOOCH3 o HCO2CH3

Save record 5

Record 6 2011-04-27

English

Subject field(s)
  • Mineralogy
Universal entry(ies)
Na3(CO3)(HCO3)·2H2O
formula, see observation
DEF

... an evaporite mineral ... used as a source of sodium carbonate.

CONT

In nonmarine environments (lacustrine) evaporite deposits comprise large amounts of trona, borates, Na, Mg, Ca, halite, Na-sulphates ...

OBS

Chemical formula : Na3(CO3)(HCO3</sub>) ·2H2O

French

Domaine(s)
  • Minéralogie
Entrée(s) universelle(s)
Na3(CO3)(HCO3)·2H2O
formula, see observation
DEF

Minéral (carbonate hydraté de sodium) du système cristallin monoclinique [que l'on] trouve notamment en Afrique du Nord.

CONT

Dans les milieux continentaux (lacustres), les dépôts évaporitiques contiennent d'importantes quantités de trona, de borates, de Na, de Mg, de Ca, de halite et de sulfates de Na [...]

OBS

Une des principales sources de carbonate de sodium (Na2CO3) et de soude caustique (NaCH) en Amérique du Nord est le raffinage du trona d'origine naturelle.

OBS

Formule chimique : Na3(CO3)(HCO3)·2H2O

Spanish

Save record 6

Record 7 2011-01-14

English

Subject field(s)
  • Air Pollution
Universal entry(ies)
HCO3-
correct, formula, see observation
CONT

A decade of results in Scandinavia indicate that as lakes are subjected to acidic precipitation, cations are mobilized, and that some of the bicarbonate ions are replaced by sulphate, thus, the normal relationship between the dominant cations, calcium and magnesium, and alkalinity, appears to be altered.

CONT

Carbonic acid, being a weak acid, dissociates only slightly in distilled water, yielding hydrogen ions and bicarbonate ions ...

OBS

Chemical formula :HCO3</sub>-

French

Domaine(s)
  • Pollution de l'air
Entrée(s) universelle(s)
HCO3-
correct, formula, see observation
OBS

Formule chimique : HCO3-

Spanish

Save record 7

Record 8 2011-01-14

English

Subject field(s)
  • Chemical Elements and Compounds
  • Food Additives
Universal entry(ies)
NH4HCO3
formula, see observation
CH5NO3
formula, see observation
DEF

Colorless crystals or white powder with an odor of ammonia [used as] antiflatulent, expectorant and baking powder.

OBS

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

OBS

Chemical formula : NH4sub>HCO3</sub> or CH5NO3

French

Domaine(s)
  • Éléments et composés chimiques
  • Additifs alimentaires
Entrée(s) universelle(s)
NH4HCO3
formula, see observation
CH5NO3
formula, see observation
DEF

Alcali utilisé comme levure chimique, [...] comme expectorant et comme antiflatulent.

OBS

Le carbonate d'ammonium commercial, qui en réalité n'est qu'un mélange de carbonate acide, (NH4)HCO3 et de carbamate [...] est utilisé en biscuiterie [...]

OBS

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

OBS

Formule chimique : NH4HCO3 ou CH5NO3

Spanish

Campo(s) temático(s)
  • Elementos y compuestos químicos
  • Aditivos alimentarios
Entrada(s) universal(es)
NH4HCO3
formula, see observation
CH5NO3
formula, see observation
OBS

Fórmula química: NH4HCO3 o CH5NO3

Save record 8

Record 9 2010-02-23

English

Subject field(s)
  • Chemical Elements and Compounds
  • Geochemistry
  • Medication
Universal entry(ies)
Mg(HCO3)2
formula, see observation
CONT

... Calcium and Magnesium react with other chemicals in the water. The warm water acts as a catalyst and increases the number of reactions depending on the concentration of calcium and magnesium. The reaction which takes place is the dissociation of calcium hydrocarbonate, formula: Ca(HC03) and magnesium hydrocarbonate, formula: Mg(HC0[susbcript 3])2. Both of these are soluble solids, which means they can dissolve when put in water. When these two soluble salts dissociate, they form carbon dioxide (a gas), which is released from the water, and calcium and magnesium carbonate. These two compounds are not soluble and are therefore taken out of solution. And it is these substances that cause the filmy, fuzzy crud on the glass of your aquarium when the water evaporates.

CONT

San Marcos River Basin. The lithology and the water flow conditions are the major factors that determine the chemical composition of the waters and the hydrogeochemical patterns. We can distinguish the following water types: sodium calcium hydrocarbonate for waters from the sedimentary-effusive rocks, magnesium hydrocarbonate for the waters which originate in the ultrabasic massif, and calcium hydrocarbonate for that waters which flow in the karst areas (at the source, caves, exsurgences and springs from the saturation zone).

OBS

magnesium hydrocarbonate: traditional name, to be avoided.

OBS

Chemical formula : Mg(HCO3</sub>) 2

French

Domaine(s)
  • Éléments et composés chimiques
  • Géochimie
  • Médicaments
Entrée(s) universelle(s)
Mg(HCO3)2
formula, see observation
CONT

(Matériel pour le grimpeur) sac à pof : petit sac dans lequel le grimpeur met du pof (poudre de résine ) ou de la magnésie (hydrocarbonate de magnésium) afin d'absorber la transpiration des mains et d'éviter que celle-ci le fasse glisser.

OBS

hydrocarbonate de magnésium : nom traditionnel, à éviter.

OBS

Formule chimique : Mg(HCO3)2

Spanish

Save record 9

Record 10 2003-01-31

English

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

The formic acid radical, HCO·,... characteristic of aldehydes.

OBS

hydridooxidocarbon(·) ;HCO· radical : The dot must be centered and pronounced after the name :"hydridooxidocarbon dot"; "HCO dot radical. "

French

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

Radical libre oxygéné à un carbone.

OBS

hydrurooxidocarbone(·); radical HCO·: Le point est un point centré; pour les noms des radicaux comportant un point centré, il faut prononcer «dot» en anglais et «point» en français après le nom : «hydrurooxidocarbone point»; «radical HCO point».

Spanish

Save record 10

Record 11 2003-01-09

English

Subject field(s)
  • Various Military Titles
  • Military Administration
Key term(s)
  • Headquarters Catalogue Office

French

Domaine(s)
  • Appellations militaires diverses
  • Administration militaire

Spanish

Save record 11

Record 12 2002-06-18

English

Subject field(s)
  • National Bodies and Committees (Canadian)
  • Telephone Services
  • Technical Aids for Persons with Disabilities
OBS

Bell Canada. The Bell Relay Service(BRS) operator is available to assist in placing or receiving call to/from persons who use a TTY/Teletypewriter. The BRS operator will also assist in placing VCO(Voice Carry Over) and HCO(Hearing Carry Over) calls.

French

Domaine(s)
  • Organismes et comités nationaux canadiens
  • Services téléphoniques
  • Aides techniques pour personnes handicapées
OBS

Bell Canada. Le Service de relais Bell permet, par l'entremise d'un téléphoniste, de communiquer avec une personne sourde qui utilise un ATS [Appareil téléscripteur], ou encore de recevoir des appels de cette personne. Il permet aussi les appels PSI (Parler Sans Intervention) et ESI (Entendre Sans Intervention).

Spanish

Save record 12

Record 13 2000-10-13

English

Subject field(s)
  • System Names
  • Telecommunications Facilities
  • Technical Aids for Persons with Disabilities
OBS

Hearing CarryOver TTY users can listen to the other party and use the TTY to type their message.

French

Domaine(s)
  • Noms de systèmes
  • Installations de télécommunications
  • Aides techniques pour personnes handicapées

Spanish

Save record 13

Record 14 2000-08-10

English

Subject field(s)
  • Telecommunications Facilities
  • Technical Aids for Persons with Disabilities
OBS

Allows a person with a speech disability to hear the other party.

French

Domaine(s)
  • Installations de télécommunications
  • Aides techniques pour personnes handicapées
OBS

Permet à une personne qui a des troubles de la parole d'entendre son interlocuteur.

Spanish

Save record 14

Record 15 2000-08-10

English

Subject field(s)
  • Telecommunications Facilities
  • Technical Aids for Persons with Disabilities
OBS

Bell service.

French

Domaine(s)
  • Installations de télécommunications
  • Aides techniques pour personnes handicapées
OBS

Service de Bell.

Spanish

Save record 15

Record 16 1999-08-27

English

Subject field(s)
  • Federal Government Bodies and Committees (Canadian)
OBS

Public Works and Government Services Canada.

French

Domaine(s)
  • Organismes et comités fédéraux (Gouvernement canadien)
OBS

Travaux publics et Services gouvernementaux Canada.

Spanish

Save record 16

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