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f three isometric bases (C6H7N) related to pyridine, and obtained from bone oil, acrolein ammonia, and coal-tar naphtha, as colorless mobile liquids of strong odor; -- called also methyl pyridine.

A crystalline substance, (C2H4NH)2, formed by action of ammonia on ethylene bromide, by reduction of pyrazine, etc. It is a strong base, and is used as a remedy for gout.

An oily liquid alkaloid, C5H11N, having a hot, peppery, ammoniacal odor. It is related to pyridine, and is obtained by the decomposition of piperine.

A yellowish brown substance obtained by heating potassium in ammonia.

precipitate (Old Chem.) (a) A heavy white amorphous powder (NH2.HgCl) obtained by adding ammonia to a solution of mercuric chloride or corrosive sublimate; -- formerly called also infusible white precipitate, and now amido-mercuric chloride. (b) A white crystalline substance obtained by adding a solution of corrosive…

ohols. -- Primary amine (Chem.), an amine containing the amido group, or a derivative of ammonia in which only one atom of hydrogen has been replaced by a basic radical; -- distinguished from secondary and tertiary amines. -- Primary amputation (Surg.), an amputation for injury performed as soon as the shock due to t…

or state of being pungent or piercing; keenness; sharpness; piquancy; as, the pungency of ammonia. "The pungency of menaces." Hammond.

em.), used in designating certain brilliant purple-red compounds of cobaltic chloride and ammonia, similar to the roseocobaltic compounds. See Cobaltic.

Pertaining to, derived from, or containing, rhodium and ammonia; -- said of certain complex compounds.

to designate certain rose-red compounds (called roseo-cobaltic compounds) of cobalt with ammonia. Cf. Luteo-.

[NL.] (Old Chem.), salt of sorrel. -- Sal alembroth. (Old Chem.) See Alembroth. -- Sal ammoniac (Chem.), ammonium chloride, NH4Cl, a white crystalline volatile substance having a sharp salty taste, obtained from gas works, from nitrogenous matter, etc. It is largely employed as a source of ammonia, as a reagent, and…

Capable of neutralizing an acid to form a salt; -- said of bases; thus, ammonia is salifiable.

Sal ammoniac. See under Sal.

ld Chem.), green vitriol, or sulphate of iron. -- Salt of hartshorn. (Old Chem.) (a) Sal ammoniac, or ammonium chloride. (b) Ammonium carbonate. Cf. Spirit of hartshorn, under Hartshorn. -- Salt of lemons. (Chem.) See Salt of sorrel, below. -- Salt of Saturn (Old Chem.), sugar of lead; lead acetate; -- the alchemica…

A species of bindweed or Convolvulus (C. Scammonia).

nted or cutting, keen, penetrating, acute: to the taste or smell, pungent, acid, sour, as ammonia has a sharp taste and odor; to the hearing, piercing, shrill, as a sharp sound or voice; to the eye, instantaneously brilliant, dazzling, as a sharp flash.

tter white crystalline nitrogenous substance, obtained indirectly from oil of mustard and ammonia; -- called also allyl melamine.

h something suited to stimulate the sense of smell, or to remove faintness, as spirits of ammonia.

An aromatic preparation of carbonate of ammonia and, often, some scent, to avoid or relieve faintness, headache, or the like.

A greenish or reddish crystalline substance, NaNH2, obtained by passing ammonia over heated sodium.