TERMIUM Plus^®

Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 DEF

An off-white to pale yellow heterocyclic organic compound formed by replacing the hydrogen in position 4 (or 5) of imidazole by a methyl group.  5, record 1, English, - 4%2Dmethylimidazole

Record number: 1, Textual support number: 1 CONT

4-methylimidazole (4-MEI) is a compound used to make certain pharmaceuticals, photographic chemicals, dyes and pigments, cleaning and agricultural chemicals, and rubber products. 4-MEI is formed during the production of certain caramel coloring agents used in many food and drink products. It may also be formed during the cooking, roasting, or other processing of some foods and beverages. ... Studies published in 2007 by the [U.S.] federal government’s National Toxicology Program showed that long-term exposure to 4-MEI resulted in increases in lung cancer in male and female mice. These findings were the basis for the addition of 4-MEI to California’s Proposition 65 list of carcinogens.  6, record 1, English, - 4%2Dmethylimidazole

Record number: 1, Textual support number: 2 CONT

2-methylimidazole and 4-methylimidazole are intermediate/starting materials or components in the manufacture of pharmaceuticals, photographic and photothermographic chemicals, dyes and pigments, agricultural chemicals, and rubber. These chemicals have been identified as undesirable by-products in several foods and have been detected in mainstream and sidestream tobacco smoke. The National Cancer Institute nominated 2- and 4-methylimidazole as candidates for toxicity and carcinogenicity studies. Toxicity studies were carried out in male and female F344/N rats and ...  7, record 1, English, - 4%2Dmethylimidazole

Record number: 1, Textual support number: 3 CONT

Concern has arisen about the presence of 4-MEI in caramel color (which is the most-used food and beverage coloring) ... Dark beers and common brands of cola drinks may contain ...  2, record 1, English, - 4%2Dmethylimidazole

Record number: 1, Textual support number: 4 CONT

... Since imidazole also exists in tautomeric forms, either of the nitrogen atoms can bear the hydrogen atom, the two nitrogens become indistinguishable and the numbering becomes rather complex for mono-substituted imidazoles. As a consequence of this, 4-methylimidazole is identical with 5-methylimidazole and, depending on the position of the imino hydrogen, such a compound may be designated either 4- or 5-methylimidazole. As only one substance that may be a single tautomer or an equilibrium mixture is known, it would be incorrect to call it eithier 4- or 5-methylimidazole. Such a compound is instead designated as 4(5)-methylimidazole.  8, record 1, English, - 4%2Dmethylimidazole

Record number: 1, Textual support number: 1 OBS

4(5)-methylimidazole; 4(or 5)-methylimidazole; 5-methylimidazole; 5-methyl-1H-imidazole : 4-methylimidazole and 5-methylimidazole are tautomers(structural isomers that are readily interconvertible) and are therefore usually considered to be synonymous(i. e. considered to be the same chemical compound). They have the same molecular formula and CAS Registry Number(CAS : Chemical Abstracts Service).  5, record 1, English, - 4%2Dmethylimidazole

Record number: 1, Textual support number: 2 OBS

Chemical formulas: C₄H₆N₂ or H₃C-C₃H₃N₂  5, record 1, English, - 4%2Dmethylimidazole

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 DEF

Composé chimique hétérocyclique de couleur blanc cassé à jaune pâle, formé en remplaçant l'hydrogène en position 4 (ou 5) de l'imidazole par un groupe méthyle.  4, record 1, French, - 4%2Dm%C3%A9thylimidazole

Record number: 1, Textual support number: 1 OBS

Considéré comme étant probablement cancérigène, on retrouve ce produit lors de la fabrication de colorants caramel présents dans beaucoup d'aliments et de boissons (p. ex. boissons à base de cola, bières brunes) et à la suite du rôtissage d'aliments (p. ex. café et viande).  4, record 1, French, - 4%2Dm%C3%A9thylimidazole

Record number: 1, Textual support number: 2 OBS

Il sert à fabriquer des produits pharmaceutiques, des produits pour le nettoyage, des produits utilisés en photographie et en agriculture, des teintures et des pigments, et des produits à base de caoutchouc.  4, record 1, French, - 4%2Dm%C3%A9thylimidazole

Record number: 1, Textual support number: 3 OBS

4(ou 5)-méthylimidazole; 5-méthyl-1H-imidazole; 5-méthylimidazole : Le 4-méthylimidazole et le 5-méthylimidazole sont des tautomères (isomères interconvertibles) et sont donc souvent considérés comme étant le même composé chimique.  4, record 1, French, - 4%2Dm%C3%A9thylimidazole

Record number: 1, Textual support number: 4 OBS

méthyl-4 iminazole : «Imidazole» s'écrit également «iminazole».  5, record 1, French, - 4%2Dm%C3%A9thylimidazole

Record number: 1, Textual support number: 5 OBS

Formules chimiques : C₄H₆N₂ ou H₃C-C₃H₃N₂ ou CH₃-C₃H₃N₂  4, record 1, French, - 4%2Dm%C3%A9thylimidazole

Record 1,  Textual support,  Spanish

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 DEF

[A chemical formula which] indicates the location of the atoms, groups, or ions relative to one another in a molecule, as well as the number and location of chemical bonds.  2, record 2, English, - structural%20formula

Record number: 2, Textual support number: 2 DEF

An expanded molecular formula showing the arrangement within the molecule of atoms and of bonds depicted usually by lines of valence electrons depicted usually by dots.  3, record 2, English, - structural%20formula

Record number: 2, Textual support number: 3 DEF

A system of notation used for organic compounds in which the exact structure, if it is known, is given in schematic representation.  4, record 2, English, - structural%20formula

Record 2,  Textual support,  French

Record number: 2, Textual support number: 1 DEF

Formule qui indique le mode de liaison des atomes sur un plan ou dans l'espace.  4, record 2, French, - formule%20d%C3%A9velopp%C3%A9e

Record 2,  Textual support,  Spanish

Record 3,  Textual support,  English

Record number: 3, Textual support number: 1 OBS

"Vicinal" : Neighboring or adjoining positions on a carbon ring or chain; the term is used in naming derivatives with substituting groups in such locations in a structural formula or molecule.  2, record 3, English, - vicinal%20triketone

Record 3,  Textual support,  French

Record number: 3, Textual support number: 1 OBS

"Tricéto-1,3,5 benzène" : Tricétone de f. C₆H₃(CO-CH₃)₃.  2, record 3, French, - tric%C3%A9tone%20vicinal

Record number: 3, Textual support number: 2 OBS

Produit utilisé pour la révélation des empreintes digitales latentes.  3, record 3, French, - tric%C3%A9tone%20vicinal

Record 3,  Textual support,  Spanish

Record 4,  Textual support,  English

Record number: 4, Textual support number: 1 OBS

The term structural refers not only to the location of the atoms, groups, or ions in relation to one another in a molecule, but also to the number and location of chemical bonds; since the 3-dimensionality of molecules cannot properly be shown in the plane of the paper, it is sometimes indicated by extra-heavy lines or 3-dimensional artwork(configurational formula).  2, record 4, English, - configurational%20formula

Record number: 4, Textual support number: 2 OBS

See also "structural formula".  3, record 4, English, - configurational%20formula

Record 4,  Textual support,  French

Record number: 4, Textual support number: 1 CONT

Il arrive que la différence entre formules développées soit plus subtile et provienne de la structure tridimensionnelle des molécules. On doit alors utiliser des représentations graphiques, qui sont des projections sur un plan de la formule développée tridimensionnelle. Les différences entre formules sont alors expliquées par la stéréochimie.  1, record 4, French, - formule%20d%C3%A9velopp%C3%A9e%20tridimensionnelle

Record 4,  Textual support,  Spanish

Record 5,  Textual support,  English

Record number: 5, Textual support number: 1 DEF

A chemical compound which belongs to a class of unsaturated hydrocarbons of the homologous series and whose structural formula contains a triple bond.  3, record 5, English, - acetylene%20hydrocarbon

Record number: 5, Textual support number: 1 OBS

Generic chemical formula: C_nH_2n-2  3, record 5, English, - acetylene%20hydrocarbon

Record 5,  Textual support,  French

Record number: 5, Textual support number: 1 DEF

Nom générique de hydrocarbures dérivant des alcanes, contenant une triple liaison C=C [...]  4, record 5, French, - hydrocarbure%20ac%C3%A9tyl%C3%A9nique

Record number: 5, Textual support number: 1 OBS

Formule chimique générale : C_nH_2n-2  5, record 5, French, - hydrocarbure%20ac%C3%A9tyl%C3%A9nique

Record 5,  Textual support,  Spanish

Record number: 5, Textual support number: 1 DEF

Hidrocarburo insaturado de la serie homóloga [...] y cuya fórmula estructural contiene un triple enlace.  1, record 5, Spanish, - hidrocarburo%20acetil%C3%A9nico

Record number: 5, Textual support number: 1 OBS

Fórmula química genérica: C_nH_2n-2  3, record 5, Spanish, - hidrocarburo%20acetil%C3%A9nico

Record 6,  Textual support,  English

Record number: 6, Textual support number: 1 DEF

A binary compound of hydrogen and oxygen, empirical formula H₂O₂, 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.  6, record 6, English, - hydrogen%20peroxide

Record number: 6, Textual support number: 1 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.  7, record 6, English, - hydrogen%20peroxide

Record number: 6, Textual support number: 2 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.  8, record 6, English, - hydrogen%20peroxide

Record number: 6, Textual support number: 3 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."  9, record 6, English, - hydrogen%20peroxide

Record number: 6, Textual support number: 4 OBS

hydrogen peroxide: form recommended by the IUPAC (International Union of Pure and Applied Chemistry).  2, record 6, English, - hydrogen%20peroxide

Record number: 6, Textual support number: 5 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."  2, record 6, English, - hydrogen%20peroxide

Record number: 6, Textual support number: 6 OBS

Molecular formula : H₂O₂; Structural formula : H—O—O—H  7, record 6, English, - hydrogen%20peroxide

Record 6,  Textual support,  French

Record number: 6, Textual support number: 1 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 [...]  6, record 6, French, - peroxyde%20d%27hydrog%C3%A8ne

Record number: 6, Textual support number: 1 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.  7, record 6, French, - peroxyde%20d%27hydrog%C3%A8ne

Record number: 6, Textual support number: 2 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 [...]  6, record 6, French, - peroxyde%20d%27hydrog%C3%A8ne

Record number: 6, Textual support number: 1 OBS

On appelle ordinairement eau oxygénée les mélanges d'eau et de peroxyde d'hydrogène.  6, record 6, French, - peroxyde%20d%27hydrog%C3%A8ne

Record number: 6, Textual support number: 2 OBS

peroxyde d'hydrogène : forme recommandée par l'UICPA (Union internationale de chimie pure et appliquée).  2, record 6, French, - peroxyde%20d%27hydrog%C3%A8ne

Record number: 6, Textual support number: 3 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».  2, record 6, French, - peroxyde%20d%27hydrog%C3%A8ne

Record number: 6, Textual support number: 4 OBS

À une concentration de 30 % il est commercialisé sous le nom de «Perhydrol» (voir aussi cette fiche).  8, record 6, French, - peroxyde%20d%27hydrog%C3%A8ne

Record number: 6, Textual support number: 5 OBS

Formule chimique : H₂O₂  8, record 6, French, - peroxyde%20d%27hydrog%C3%A8ne

Record 6,  Textual support,  Spanish

Record number: 6, Textual support number: 1 OBS

Líquido incoloro, insoluble en alcohol y agua. Las soluciones concentradas son tóxicas e irritantes. Riesgo de explosión. Agente oxidante.  3, record 6, Spanish, - per%C3%B3xido%20de%20hidr%C3%B3geno

Record number: 6, Textual support number: 2 OBS

Fórmula química: H₂O₂  4, record 6, Spanish, - per%C3%B3xido%20de%20hidr%C3%B3geno

Record 7,  Textual support,  English

Record number: 7, Textual support number: 1 DEF

Any chemical belonging to the class of chemical compounds consisting of all compounds of carbon except for its oxides, sulfides and metal carbonates, identifiable by chemical name, by structural formula, if known, and by Chemical Abstracts Service registry number if assigned(Chemical Weapons Convention).  3, record 7, English, - discrete%20organic%20chemical

Record number: 7, Textual support number: 1 OBS

discrete organic chemical: term extracted from the "Disarmament and Peace Keeping" glossary with the permission of the United Nations Office at Geneva.  4, record 7, English, - discrete%20organic%20chemical

Record 7,  Textual support,  French

Record number: 7, Textual support number: 1 DEF

Tout produit chimique appartenant à la classe des composés chimiques qui comprend tous les composés du carbone, à l'exception des oxydes et des sulfures de carbone ainsi que des carbonates de métaux, identifiable par son nom chimique, sa formule développée, si elle est connue, et son numéro de fichier du Chemical Abstracts Service, s'il a été attribué.  2, record 7, French, - produit%20chimique%20organique%20d%C3%A9fini

Record number: 7, Textual support number: 1 OBS

produit chimique organique défini : terme tiré du lexique «Désarmement et Maintien de la Paix» avec l'autorisation de l'Office des Nations Unies à Genève.  3, record 7, French, - produit%20chimique%20organique%20d%C3%A9fini

Record 7,  Textual support,  Spanish

Record 8,  Textual support,  English

Record number: 8, Textual support number: 1 CONT

[In organic nomenclature], atoms or groups are termed cis or trans to one another when they lie respectively on the same or on opposite sides of a reference plane identifiable as common among stereoisomers. The compounds in which such relations occur are termed cis-trans-isomers. For compounds containing only doubly bonded atoms the reference plane contains the doubly bonded atoms and is perpendicular to the plane containing these atoms and those directly attached to them. For cyclic compounds the reference plane is that in which the ring skeleton lies or to which it approximates. When qualifying another word or a locant, cis or trans is followed by a hypen. When added to a structural formula, cis may be abbreviated to c, and trans to t.  1, record 8, English, - cis%2D

Record 8,  Textual support,  French

Record number: 8, Textual support number: 1 CONT

[En nomenclature organique], deux atomes ou des groupes d'atomes sont appelés cis ou trans l'un par rapport à l'autre s'ils sont respectivement du même côté ou de part et d'autre d'un plan de référence reconnu commun aux deux stéréoisomères. Les composés dans lesquels une telle relation se rencontre sont appelés isomères cis-trans. Pour les composés dans lesquels la seule origine de cette isomérie est la présence d'atomes doublement liés, le plan de référence contient les atomes doublement liés et est perpendiculaire au plan contenant ces atomes et ceux qui leur sont directement liés. Pour les composés cycliques, le plan de référence est celui qui contient le squelette cyclique ou qui s'en rapproche le plus. Quand il qualifie un mot ou un indice, le terme cis ou trans est suivi d'un trait d'union. Quand ils sont ajoutés à une formule structurale, cis peut être abrégé en c et trans en t.  1, record 8, French, - cis%2D

Record 8,  Textual support,  Spanish

Record 9,  Textual support,  English

Record number: 9, Textual support number: 1 DEF

(abbreviated vic-). Neighboring or adjoining positions on a carbon ring or chain; the term is used in naming derivatives with substituting groups in such locations in a structural formula or molecule.  2, record 9, English, - vicinal

Record 9,  Textual support,  French

Record number: 9, Textual support number: 1 DEF

Se dit parfois des isomères portant sur un noyau, leurs groupements en des sommets consécutifs. Ex. : triméthyl-1,2,3 benzène.  2, record 9, French, - vicinal

Record number: 9, Textual support number: 2 DEF

Se dit de deux atomes ou radicaux fixés sur deux atomes adjacents. (Les atomes de chlore du chlorure d'éthylène ClCh₂CH₂Cl sont vicinaux.)  3, record 9, French, - vicinal

Record 9,  Textual support,  Spanish

Record 10,  Textual support,  English

Record number: 10, Textual support number: 1 DEF

A basic anion exchange resin described as a high molecular weight copolymer of diethylenetriamine and 1-chloro-2, 3-epoxypropane(hydrochloride), with approximately 1 out of 5 amine nitrogens protonated, for which no structural formula has been assigned and for which no specific no 1 weight information is available, due to the highly cross-linked and insoluble nature of the material.  1, record 10, English, - colestipol

Record 10,  Textual support,  French

Record number: 10, Textual support number: 1 CONT

La cholestyramine et le colestipol sont des résines échangeuses d'ions qui, prises par la bouche, ne sont pas résorbées par le tube digestifs mais sont éliminées par les selles.  1, record 10, French, - colestipol

Record 10,  Textual support,  Spanish

Record 11,  Textual support,  English

Record number: 11, Textual support number: 1 OBS

A trioctahedral montmorillonoid derived from biotite in soil-clay at Carden Wood, Aberdeenshire, Scotland. A mixed alteration product previously described without name by G.F. Walker.  1, record 11, English, - cardenite

Record number: 11, Textual support number: 2 OBS

MacEwan(1954) has described(...) a clay(cardenite) from Scottish soils.(...) On the basis of this formula both the octahedral and tetrahedral sheets have vacancies. It is unlikely that this structural formula accurately describes a single mineral species.  2, record 11, English, - cardenite

Record 11,  Textual support,  French

Record number: 11, Textual support number: 1 OBS

Minéral trioctaédrique de type saponite présentant un déficit de cations en couche octaédrique.  1, record 11, French, - cardenite

Record 11,  Textual support,  Spanish