Antimony, Ru′by of. Syn. Medic′inal (-dĭs′-) REG′ULUS OF ANTIMONY; Antimo′′nii rubi′nus, Reg′ulus medicina′lis, R. a. m., &c., L. From crude sulphide of antimony, 5 parts; fused with carbonate of potassa, 1 part; and the purified portion separated from the scoriæ. See Liver of Antimony.
Antimony, Saff′ron of. See Crocus of Antimony.
Antimony, Smelt′ed. Syn. Antimo′′nium purifica′tum, L. Crude antimony melted and poured into small conical moulds.—Uses, &c. Same as the ordinary tersulphide.
Antimony, Snow of. See Antimony, Flowers of.
Antimony, Sulphurated. B. P. Syn. Oxysulphuret, or Precipitated Sulphide of Antimony, Golden Sulphide of Antimony. Mix black antimony 10 oz. with solution of soda 41⁄2 pints, and boil for two hours, with frequent stirring, adding distilled water occasionally to maintain the same volume. Strain the liquor through calico, and before it cools add to it by degrees dilute sulphuric acid till the latter is in slight excess. Collect the precipitate on a calico filter, wash with distilled water till the washings no longer precipitate with chloride of barium, and dry at a temperature not exceeding 212° F.—Dose, 1 to 5 grains.
Antimony, Sulphantimonate. Syn. Schlippe’s Antimonial Salt. Mix eight parts of effloresced sulphate of soda, six of black antimony, and three of charcoal, and expose to a red-heat in a covered Hessian crucible till the fused mass ceases to throw up a scum. Boil the residue in a porcelain vessel with one part of sulphur and sufficient distilled water, and set the filtered liquor aside for crystallisation.
Antimony, Pentasulphide of (Sb2S5), is a yellowish-red powder, obtained (1) by passing hydrosulphuric acid gas through a mixture of pentachloride of antimony, water, and tartaric acid; or (2) through antimonic anhydride suspended in water. It is insoluble in water; hot hydrochloric acid decomposes it, producing trichloride of antimony, sulphur, and hydrosulphuric acid. With the more basic metallic sulphides it unites to form a class of salts called sulphantimonates.
Antimony, Trisulphide of. Sb2S3. Syn. Tersul′phide of antimony, Sul′phide of a., Sul′phuret of a., Black s. of a., Sesquisul′phuret of a., &c.; L′antimoine sulfure, Sulfure d’antimoine, &c., Fr.; Schwefel-spiessglanz, Anderthalb, &c., Ger. This is the grey or greyish-black substance commonly known as crude antimony, black antimony, or sulphide of antimony, in commerce, and from which the other compounds of antimony are chiefly obtained.
Nat. hist., Sources, &c. See Antimony.
The crude ore is freed from earthy impurities in the following manner:—The crushed ore is submitted to ‘eliquation’ in order to separate the SULPHIDE from the gangue or earthy matter with which it is contaminated; after which it is remelted and run into ‘loaves’ or large cakes, in which form it is sent to market. Formerly the operation was performed by introducing the ore into large pots or crucibles having a hole in the bottom, and which, after being closely covered, were set in a circle around a suitable furnace, by which