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Physical & Chemical properties

Appearance / physical state / colour

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Description of key information

Sodium thiosulfate appears as a colourless monoclinic crystalline solid.

Key value for chemical safety assessment

Physical state at 20°C and 1013 hPa:
solid

Additional information

For the evaluation of this endpoint, data from two handbooks (CRC handbook and Merck Index) were used in a weight of evidence approach. 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 Merck Index and the CRC Handbook of Chemistry and Physics.

Data available from these handbooks describe sodium thiosulfate appears as a colourless monoclinic crystalline solid.