Properties: Powder. Sol in water; practically insol in alcohol.
Derivative Type: Pentahydrate
Properties: Odorless crystals or granules, mp 48° when rapidly heated. Effloresces in warm dry air; slightly deliquesces in moist air. d 1.69. Loses all its water at 100°; dec at higher temp. Sol in water; insol in alcohol. Slowly dec in aq soln at ordinary temp, more rapidly when heated. The aq soln is practically neutral. pH 6.5-8.0. It dissolves silver halides and many other salts of silver. Incompat: Iodine, acids; lead, mercury, and silver salts. LD i.v. in rats: 2.5 g/kg (Voegtlin).
Melting point: mp 48° when rapidly heated
Density: d 1.69
Toxicity data: LD i.v. in rats: 2.5 g/kg (Voegtlin)
Use: To remove chlorine from solns according to the eq: Na2S2O3 + 4Cl2 +5H2O ® 2NaHSO4 + 8HCl and Na2S2O3 + 2HCl ® 2NaCl + H2O + S + SO2. As "antichlor" in bleaching of paper pulp; as fixer in photography; for extraction of silver from ores; as mordant in dyeing and printing textiles; reducer in chrome dyeing; manuf leather; bleaching bone, straw, ivory; also as reagent in analytical chemistry.
Therap-Cat: Antidote (cyanide).
Therap-Cat-Vet: Antidote (cyanide). Has been used as a "general detoxifier", in bloat, and externally in ringworm, mange.
Keywords: Antidote (Cyanide).
产品链接: 7772-98-7››