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Physical & Chemical properties

Water solubility

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Description of key information

Water solublity of potassium thiosulphate: very soluble 

Key value for chemical safety assessment

Water solubility:
1 650 g/L
at the temperature of:
25 °C

Additional information

For the evaluation of this endpoint, data from one handbook (CRC handbook) were used as key information. Handbook data considered to be from a trusted source acc. to "ECHA, Guidance on information requirements and chemical safety assessment – Chapter R.7a: Endpoint specific guidance". Useful reference books and data compliations containing peer reviewed physico-chemical data include the CRC Handbook of Chemistry and Physics.

Data from this handbook indicate that potassium thiosulfate has a water solubility of 1650 g/L at 25°C. However, no pH value is given.