TERMIUM Plus^®

Record 1,  Textual support,  English

Record number: 1, Textual support number: 1 DEF

A colorless, flammable, poisonous gas with an offensive odour of rotten eggs and a sweetish taste which is derived by the action of dilute sulfuric acid on a sulfide, usually iron sulfide, or by direct union of hydrogen and sulfur vapour at a definite temperature and pressure or as a by-product of petroleum refining, and which is used in purification of hydrochloric acid and sulfuric acid, in precipitating sulfides of metals, as an analytical reagent and a source of sulfur and hydrogen.  7, record 1, English, - hydrogen%20sulfide

Record number: 1, Textual support number: 1 OBS

hydrogen sulfide: 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.  3, record 1, English, - hydrogen%20sulfide

Record number: 1, Textual support number: 1 PHR

liquefied hydrogen sulfide  7, record 1, English, - hydrogen%20sulfide

Record number: 1, Textual support number: 2 PHR

hydrogen sulfide in aqueous solution; hydrogen sulfide gas, hydrogen sulfide solution  7, record 1, English, - hydrogen%20sulfide

Record number: 1, Textual support number: 2 OBS

Chemical formula: H₂S  7, record 1, English, - hydrogen%20sulfide

Record 1,  Textual support,  French

Record number: 1, Textual support number: 1 DEF

Produit chimique qui se présente sous la forme d'un gaz mortel dégageant une odeur désagréable d'œufs pourris, que l'on obtient par l'action des acides sur certains sulfures métalliques, qui se forme dans les eaux stagnantes, et que l'on utilise dans la lutte contre les rongeurs, les insectes et les champignons parasites des graines.  5, record 1, French, - sulfure%20d%27hydrog%C3%A8ne

Record number: 1, Textual support number: 1 OBS

sulfure d'hydrogène : 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.  3, record 1, French, - sulfure%20d%27hydrog%C3%A8ne

Record number: 1, Textual support number: 2 OBS

Ne pas confondre avec «acide sulfhydrique», nom donné au sulfure d'hydrogène en solution aqueuse.  5, record 1, French, - sulfure%20d%27hydrog%C3%A8ne

Record number: 1, Textual support number: 1 PHR

sulfure d'hydrogène gazeux, sulfure d'hydrogène liquéfié; sulfure d'hydrogène en solution aqueuse  5, record 1, French, - sulfure%20d%27hydrog%C3%A8ne

Record number: 1, Textual support number: 2 PHR

solution de sulfure d'hydrogène  5, record 1, French, - sulfure%20d%27hydrog%C3%A8ne

Record number: 1, Textual support number: 3 OBS

Formule chimique : H₂S  5, record 1, French, - sulfure%20d%27hydrog%C3%A8ne

Record 1,  Textual support,  Spanish

Record number: 1, Textual support number: 1 OBS

Gas venenoso, incoloro y de olor a huevos podridos. Se origina en la descomposición de aminoácidos proteicos por bacterias de putrefacción. Tóxico e irritante. Inflamable.  2, record 1, Spanish, - sulfuro%20de%20hidr%C3%B3geno

Record number: 1, Textual support number: 2 OBS

Fórmula química : H₂S  3, record 1, Spanish, - sulfuro%20de%20hidr%C3%B3geno

Record 2,  Textual support,  English

Record number: 2, Textual support number: 1 DEF

A chemical product in the form of a yellow or orange powder which is soluble in nitric acid and alkalies, insoluble in water, decomposes to sulfur and the trisulfide when heated, which is derived by precipitation from arsenic acid in a hydrochloric acid solution with hydrogen sulfide, filtered and then dried, and which is used in paint pigments, light filters and other arsenic compounds.  3, record 2, English, - diarsenic%20pentasulfide

Record number: 2, Textual support number: 1 OBS

Chemical formula: As₂S₅  3, record 2, English, - diarsenic%20pentasulfide

Record 2,  Textual support,  French

Record number: 2, Textual support number: 1 OBS

Formule chimique : As₂S₅  3, record 2, French, - pentasulfure%20de%20diarsenic

Record 2,  Textual support,  Spanish

Record 3,  Textual support,  English

Record number: 3, Textual support number: 1 DEF

A chemical compound known only in solution, yellow, unstable, hydrogen sulfide odor, decomposed by acids with evolution of hydrogen sulfide, used as analytical reagent, and as insecticide spray.  2, record 3, English, - ammonium%20polysulfide

Record number: 3, Textual support number: 1 OBS

Red ammonium sulfide solution. ... contains about 8% NH3 and 22% sulfur, corresponding to about 30% (NH4)2S3. ... Yellow ammonium sulfide solution ... contains 8-9% NH3 and about the same percentage of sulfur, corresponding to 16-20% as (NH4)2S.  3, record 3, English, - ammonium%20polysulfide

Record number: 3, Textual support number: 2 OBS

Chemical formula: (NH₄)₂x  4, record 3, English, - ammonium%20polysulfide

Record 3,  Textual support,  French

Record number: 3, Textual support number: 1 OBS

Connu seulement sous forme de solution, jaune, instable, odeur de SH2. Usages : Réactif chimique; insecticide.  2, record 3, French, - polysulfure%20d%27ammonium

Record number: 3, Textual support number: 2 OBS

Formule chimique : (NH₄)₂x  2, record 3, French, - polysulfure%20d%27ammonium

Record 3,  Textual support,  Spanish

Record 4,  Textual support,  English

Record number: 4, Textual support number: 1 DEF

Aqueous solution of hydrogen sulfide.  3, record 4, English, - sulfhydric%20acid

Record number: 4, Textual support number: 1 OBS

sulfhydric acid: form recommended by the IUPAC (International Union of Pure and Applied Chemistry) for the systematic name.  1, record 4, English, - sulfhydric%20acid

Record 4,  Textual support,  French

Record number: 4, Textual support number: 1 DEF

Solution aqueuse de sulfure d'hydrogène.  3, record 4, French, - acide%20sulfhydrique

Record number: 4, Textual support number: 1 OBS

acide sulfhydrique : forme recommandée par l'UICPA (Union internationale de chimie pure et appliquée) pour le nom systématique.  4, record 4, French, - acide%20sulfhydrique

Record 4,  Textual support,  Spanish

Record number: 4, Textual support number: 1 DEF

Ácido dibásico que se obtiene por disolución del sulfuro de hidrógeno en agua.  3, record 4, Spanish, - %C3%A1cido%20sulfh%C3%ADdrico

Record 5,  Textual support,  English

Record number: 5, Textual support number: 1 DEF

An aqueous solution of hydrogen iodide(a gas at room temperature) which appears under the form of a colorless or pale-yellow liquid, is derived by passing hydrogen with iodine vapor over warm platinum sponge or by the action of iodine on a solution of hydrogen sulfide, and is used in the preparation of iodine salts, in organic preparations, as an analytical reagent, a disinfectant and in pharmaceuticals.  2, record 5, English, - hydriodic%20acid

Record 5,  Textual support,  French

Record number: 5, Textual support number: 1 OBS

Solution aqueuse d'iodure d'hydrogène (voir aussi cette fiche).  3, record 5, French, - acide%20iodhydrique

Record 5,  Textual support,  Spanish

Record number: 5, Textual support number: 1 OBS

Líquido claro; incoloro a amarillento; solución acuosa de ácido yodhídrico, el cual es gaseoso a temperatura ordinaria. Ácido fuerte y agente reductor activo, muy corrosivo. Muy tóxico; fuerte irritante para los ojos y la piel.  1, record 5, Spanish, - %C3%A1cido%20yodh%C3%ADdrico

Record 6,  Textual support,  English

Record number: 6, Textual support number: 1 CONT

The mechanics of MEOR at a molecular level are really quite simple, but must be thoroughly understood to assess both the efficiency and the efficacy of the process. The microbes in MEOR are simply hydrocarbon-utilizing, non-pathogenic microorganisms which are endemic to, and are naturally-occurring in petroleum reservoirs. What this means is, they naturally exist in reservoirs, are safe for plants, animals and humans, and ingest hydrocarbons as a food source which they metabolize. As a result of this "digestive" process, they then excrete bio-products such as alcohols, gases, acids, surfactants and polymers, which because of their origin are all natural and non-toxic.... Changes in the Crude [:] The gases excreted by the microorganisms go immediately into solution in the crude, making it a solution gas drive reservoir once again. The gases, solvents and weak acids cause a reduction in the viscosity and the pour point of the crude, and an increase in its API(or specific) gravity. These three changes cause the oil to be thinner and to flow more freely. Some of the microorganisms inhibit the activity of SRB's, or sulfate-reducing bacteria, which also occur naturally in reservoirs, but cause corrosion in metal parts and produce the deadly H2S(hydrogen sulfide) gas. Changes in the Reservoir Rock [:] The surfactants, acids and solvents clean out the paraffin wax and the heavy crude depositions in the pores of the rock improving the permeability and partially restoring the original porosity of the rock. The polymers help modify the permeability of the rock by reducing the size of the molecules of reservoir fluids, and help prevent and control water-coning problems. The acids, solvents, alcohols and surfactants remove metal traces from the poral throats of the rock, helping to restore the original porosity and permeability of the reservoir rock.  3, record 6, English, - microbial%20enhanced%20oil%20recovery

Record 6,  Textual support,  French

Record number: 6, Textual support number: 1 CONT

L'utilisation des techniques de recombinaison de l'ADN pourrait conduire également à la mise au point de micro-organismes améliorés destinés à être injectés directement dans les puits de pétrole. Pour qu'un micro-organisme soit commercialement utilisable, il doit être à même de survivre dans les conditions sévères de température, de salinité et de pression. Une fois dans le puits, le micro-organisme produirait soit un gaz pour remettre le puits sous pression, soit des agents tensio-actifs ou des émulsifiants pour diminuer la viscosité du pétrole. L'utilisation des techniques de recombinaison de l'ADN pourrait contribuer à accroître de façon significative les réserves mondiales récupérables de pétrole.  2, record 6, French, - r%C3%A9cup%C3%A9ration%20microbienne%20assist%C3%A9e%20du%20p%C3%A9trole

Record 6,  Textual support,  Spanish