Fuming sulphuric acid

Fuming sulphuric acid
Sulphuric Sul*phu"ric, a. [Cf. F. sulfurique.] 1. Of or pertaining to sulphur; as, a sulphuric smell. [1913 Webster]

2. (Chem.) Derived from, or containing, sulphur; specifically, designating those compounds in which the element has a higher valence as contrasted with the sulphurous compounds; as, sulphuric acid. [1913 Webster]

{Sulphuric acid}. (a) Sulphur trioxide (see under {Sulphur}); -- formerly so called on the dualistic theory of salts. [Obs.] (b) A heavy, corrosive, oily liquid, {H2SO4}, colorless when pure, but usually yellowish or brownish, produced by the combined action of sulphur dioxide, oxygen (from the air), steam, and nitric fumes. It attacks and dissolves many metals and other intractable substances, sets free most acids from their salts, and is used in the manufacture of hydrochloric and nitric acids, of soda, of bleaching powders, etc. It is also powerful dehydrating agent, having a strong affinity for water, and eating and corroding paper, wood, clothing, etc. It is thus used in the manufacture of ether, of imitation parchment, and of nitroglycerin. It is also used in etching iron, in removing iron scale from forgings, in petroleum refining, etc., and in general its manufacture is the most important and fundamental of all the chemical industries. Formerly called {vitriolic acid}, and now popularly {vitriol}, and {oil of vitriol}.

{Fuming sulphuric acid}, or {Nordhausen sulphuric acid}. See {Disulphuric acid}, under {Disulphuric}.

{Sulphuric anhydride}, sulphur trioxide. See under {Sulphur}.

{Sulphuric ether}, common an[ae]sthetic ether; -- so called because made by the catalytic action of sulphuric acid on alcohol. See {Ether}, 3 (a) . [1913 Webster]


The Collaborative International Dictionary of English. 2000.

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  • Fuming sulphuric acid — Fuming Fum ing, a. Producing fumes, or vapors. [1913 Webster] {Cadet s fuming liquid} (Chem.), alkarsin. {Fuming liquor of Libavius} (Old Chem.), stannic chloride; the chloride of tin, {SnCl4}, forming a colorless, mobile liquid which fumes in… …   The Collaborative International Dictionary of English

  • fuming sulphuric acid — see ↑oleum under ↑oleate • • • Main Entry: ↑fume …   Useful english dictionary

  • fuming sulphuric acid — Disulphuric Di sul*phu ric, a. [Pref. di + sulphuric.] (Chem.) Applied to an acid having in each molecule two atoms of sulphur in the higher state of oxidation. [1913 Webster] {Disulphuric acid}, a thick oily liquid, {H2S2O7}, called also… …   The Collaborative International Dictionary of English

  • fuming sulphuric acid — noun a solution of sulphur trioxide in sulphuric acid, H2S2O7, forming crystals below 35°C; oleum; pyrosulphuric acid; disulphuric acid …  

  • Sulphuric acid — Sulphuric Sul*phu ric, a. [Cf. F. sulfurique.] 1. Of or pertaining to sulphur; as, a sulphuric smell. [1913 Webster] 2. (Chem.) Derived from, or containing, sulphur; specifically, designating those compounds in which the element has a higher… …   The Collaborative International Dictionary of English

  • Nordhausen sulphuric acid — Sulphuric Sul*phu ric, a. [Cf. F. sulfurique.] 1. Of or pertaining to sulphur; as, a sulphuric smell. [1913 Webster] 2. (Chem.) Derived from, or containing, sulphur; specifically, designating those compounds in which the element has a higher… …   The Collaborative International Dictionary of English

  • Sulphuric — Sul*phu ric, a. [Cf. F. sulfurique.] 1. Of or pertaining to sulphur; as, a sulphuric smell. [1913 Webster] 2. (Chem.) Derived from, or containing, sulphur; specifically, designating those compounds in which the element has a higher valence as… …   The Collaborative International Dictionary of English

  • Sulphuric anhydride — Sulphuric Sul*phu ric, a. [Cf. F. sulfurique.] 1. Of or pertaining to sulphur; as, a sulphuric smell. [1913 Webster] 2. (Chem.) Derived from, or containing, sulphur; specifically, designating those compounds in which the element has a higher… …   The Collaborative International Dictionary of English

  • Sulphuric ether — Sulphuric Sul*phu ric, a. [Cf. F. sulfurique.] 1. Of or pertaining to sulphur; as, a sulphuric smell. [1913 Webster] 2. (Chem.) Derived from, or containing, sulphur; specifically, designating those compounds in which the element has a higher… …   The Collaborative International Dictionary of English

  • Fuming — Fum ing, a. Producing fumes, or vapors. [1913 Webster] {Cadet s fuming liquid} (Chem.), alkarsin. {Fuming liquor of Libavius} (Old Chem.), stannic chloride; the chloride of tin, {SnCl4}, forming a colorless, mobile liquid which fumes in the air.… …   The Collaborative International Dictionary of English

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