U.S.P. Antimonii Sulphidum. Sulphide of Antimony.- Native sulphide of antimony, Sb2S3; 340; purified from siliceous matter by fusion, and as nearly free from arsenic as possible
Description
This section is from the book "A Text-Book Of Pharmacology, Therapeutics And Materia Medica", by T. Lauder Brunton. Also available from Amazon: A text-book of pharmacology, therapeutics and materia medica.
U.S.P. Antimonii Sulphidum. Sulphide of Antimony.- Native sulphide of antimony, Sb2S3; 340; purified from siliceous matter by fusion, and as nearly free from arsenic as possible
Characters. - Steel-grey masses of a metallic lustre, and a striated crystalline fracture without taste or smell.
U.S.P. Preparation. Antimonium Sulphidum Purificatum.
This is the ore from which the other compounds are prepared.
Antimonium Nigrum Purificatum, B.P.; Antimonii Sulphidum Purificatum, U.S.P. Black Antimony, B.P.; Purified Sulphide of Antimony, U.S.P. Sb2S3; 340.
Characters. - A greyish-black crystalline powder, without smell or taste.
Solubility. - It is. insoluble in water or alcohol.
Reactions. - It dissolves almost entirely in boiling hydrochloric acid, evolving sulphuretted hydrogen, and the solution affords a white precipitate when poured into water.
Preparation. - The crude sulphide, purified by fusion, is obtained in very fine powder by elutriation, then digested with ammonia to remove arsenic, washed and dried.
Impurities. - Other sulphides and arsenic.
Tests. - If one grain be dissolved in hydrochloric acid, and the solution, slightly diluted, be gently warmed with a piece of bright copper foil, the copper being washed, dried, and heated in a dry narrow test-tube, no crystalline sublimate (of arsenious anhydride) should form on the upper cool part of the tube.
Preparations.
B.P
U.S.P
Antimonium Sulphuratum.
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