Registration Dossier
Registration Dossier
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EC number: 231-982-0 | CAS number: 7783-18-8
Endpoint summary
Administrative data
Description of key information
Additional information
The majority of data on the physical and chemical properties of ammonium thiosulfate were taken from handbooks (including CRC Handbook of Chemistry and Physics and the Merck Index).
Waivers are proposed for following endpoints: boiling point, vapour pressure, partition coefficient, surface tension, flash point, auto flammability, flammability, explosiveness, oxidising properties, stability in organic solvents, dissociation constant and viscosity as well as for pyrophoric properties and flammability in contact with water.
Ammonium thiosulfate ((NH4)2S2O3, molecular weight 148.21 g/mol), CAS number 7783-18-8, EC number 231-982-0
Ammonium thiosulfate appears as a white crystalline solid.
Decomposition temperature: 150°C (reliable handbook data)
Relative density: 1.678 (reliable handbook data)
Particle size distribution and dustiness of a representative sample (experimental study results):
D50 = 225.2 µm
D10 = 102.1 µm
D90 = 437.9 µm
Dustiness: 38.32 mg/g, MMAD (GSD): 30.61 µm (1.52)
Water solubility: 1033 g/L at 100°C (very soluble, reliable handbook data)
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