Hydrogen sulphide
Hydrogen Hy"dro*gen, n. [Hydro-, 1 + -gen: cf. F. hydrog[`e]ne. So called because water is generated by its combustion. See {Hydra}.] (Chem.) A gaseous element, colorless, tasteless, and odorless, the lightest known substance, being fourteen and a half times lighter than air (hence its use in filling balloons), and over eleven thousand times lighter than water. It is very abundant, being an ingredient of water and of many other substances, especially those of animal or vegetable origin. It may by produced in many ways, but is chiefly obtained by the action of acids (as sulphuric) on metals, as zinc, iron, etc. It is very inflammable, and is an ingredient of coal gas and water gas. It is standard of chemical equivalents or combining weights, and also of valence, being the typical monad. Symbol H. Atomic weight 1. [1913 Webster]

Note: Although a gas, hydrogen is chemically similar to the metals in its nature, having the properties of a weak base. It is, in all acids, the base which is replaced by metals and basic radicals to form salts. Like all other gases, it is condensed by great cold and pressure to a liquid which freezes and solidifies by its own evaporation. It is absorbed in large quantities by certain metals (esp. palladium), forming alloy-like compounds; hence, in view of quasi-metallic nature, it is sometimes called {hydrogenium}. It is the typical reducing agent, as opposed to oxidizers, as oxygen, chlorine, etc. [1913 Webster]

{Bicarbureted hydrogen}, an old name for ethylene.

{Carbureted hydrogen gas}. See under {Carbureted}.

{Hydrogen dioxide}, a thick, colorless liquid, {H2O2}, resembling water, but having a bitter, sour taste, produced by the action of acids on barium peroxide. It decomposes into water and oxygen, and is manufactured in large quantities for an oxidizing and bleaching agent. Called also {oxygenated water}.

{Hydrogen oxide}, a chemical name for water, H?O.

{Hydrogen sulphide}, a colorless inflammable gas, {H2S}, having the characteristic odor of bad eggs, and found in many mineral springs. It is produced by the action of acids on metallic sulphides, and is an important chemical reagent. Called also {sulphureted hydrogen}. [1913 Webster]


The Collaborative International Dictionary of English. 2000.

Look at other dictionaries:

  • Hydrogen sulphide — Sulphide Sul phide, n. (Chem.) A binary compound of sulphur, or one so regarded; formerly called {sulphuret}. [1913 Webster] {Double sulphide} (Chem.), a compound of two sulphides. {Hydrogen sulphide}. (Chem.) See under {Hydrogen}. {Metallic… …   The Collaborative International Dictionary of English

  • hydrogen sulphide — noun A compound of hydrogen and sulphur, H2S • • • Main Entry: ↑hydrogen …   Useful english dictionary

  • hydrogen sulphide — ► NOUN ▪ a colourless poisonous gas with a smell of bad eggs, made by the action of acids on sulphides …   English terms dictionary

  • hydrogen sulphide — /haɪdrədʒən ˈsʌlfaɪd/ (say huydruhjuhn sulfuyd) noun a colourless, flammable, cumulatively poisonous gas, H2S, smelling like rotten eggs; sulphuretted hydrogen. Also, hydrogen sulfide …   Australian English dictionary

  • hydrogen sulphide — noun Chemistry a colourless poisonous gas with a smell of bad eggs, made by the action of acids on sulphides. [H2S.] …   English new terms dictionary

  • Sulphide — Sul phide, n. (Chem.) A binary compound of sulphur, or one so regarded; formerly called {sulphuret}. [1913 Webster] {Double sulphide} (Chem.), a compound of two sulphides. {Hydrogen sulphide}. (Chem.) See under {Hydrogen}. {Metallic sulphide}, a… …   The Collaborative International Dictionary of English

  • Hydrogen sulfide — Systematic name …   Wikipedia

  • Hydrogen — Hy dro*gen, n. [Hydro , 1 + gen: cf. F. hydrog[ e]ne. So called because water is generated by its combustion. See {Hydra}.] (Chem.) A gaseous element, colorless, tasteless, and odorless, the lightest known substance, being fourteen and a half… …   The Collaborative International Dictionary of English

  • Hydrogen dioxide — Hydrogen Hy dro*gen, n. [Hydro , 1 + gen: cf. F. hydrog[ e]ne. So called because water is generated by its combustion. See {Hydra}.] (Chem.) A gaseous element, colorless, tasteless, and odorless, the lightest known substance, being fourteen and a …   The Collaborative International Dictionary of English

  • Hydrogen oxide — Hydrogen Hy dro*gen, n. [Hydro , 1 + gen: cf. F. hydrog[ e]ne. So called because water is generated by its combustion. See {Hydra}.] (Chem.) A gaseous element, colorless, tasteless, and odorless, the lightest known substance, being fourteen and a …   The Collaborative International Dictionary of English

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