Ammonium Thiosulfate

Title: Ammonium Thiosulfate
CAS Registry Number: 7783-18-8
Additional Names: Ammonium hyposulfite
Molecular Formula: H8N2O3S2
Molecular Weight: 148.21
Percent Composition: H 5.44%, N 18.90%, O 32.39%, S 43.27%
Line Formula: (NH4)2S2O3
Literature References: Prepn: Gmelins, Ammonium (8th ed.) 23, pp 304-306 (1936). Crystal structure: S. T. Teng et al., Acta Crystallogr. B35, 1682 (1979).
Properties: Crystals, dec at 150°. Sol in water; insol in alc, ether.
Use: To clean "white" metal; in photography; in lubricants for metal cold-working.
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