Registration Dossier
Registration Dossier
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EC number: 233-666-8 | CAS number: 10294-66-3
Endpoint summary
Administrative data
Description of key information
The majority of data on the physical and chemical properties of potassium thiosulfate were taken from handbooks (including CRC Handbook of Chemistry and Physics and the Merck Index).
Studies conducted in accordance with EU or OECD guidelines are available for: density.
Waivers are proposed for following endpoints: boling point, particle size distribution, 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.
Potassium thiosulfate (K2S2O3, molecular weight 190.32 g/mol), CAS number 10294-66-3, EC number 233-666-8
Potassium thiosulfate appears as a colourless hygroscopic crystalline solid.
Melting point: >600 °C (experimental study results, according to OECD 113 and 102)
Relative density: 2.37 (experimental study results, according to OECD 109)
Water solubility: 1650 g/L at 25 °C (very soluble, reliable handbook data)
Additional information
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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