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Physical & Chemical properties

Appearance / physical state / colour

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Endpoint:
appearance / physical state / colour
Type of information:
other: Handbook data
Adequacy of study:
weight of evidence
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
data from handbook or collection of data
Remarks:
From a trusted source acc. to "ECHA, Guidance on information requirements and chemical safety assessment – Chapter R.7a: Endpoint specific guidance".
Qualifier:
no guideline followed
Principles of method if other than guideline:
Not applicable - Handbook data
GLP compliance:
not specified
Physical state at 20°C and 1013 hPa:
solid
Form:
crystalline
Colour:
Colourless
Odour:
other: no data
Substance type:
inorganic
Conclusions:
According to the reference, potassium thiosulfate appears as a colourless hygroscopic crystalline solid.
Endpoint:
appearance / physical state / colour
Type of information:
other: Handbook data
Adequacy of study:
weight of evidence
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
data from handbook or collection of data
Remarks:
From a trusted source acc. to "ECHA, Guidance on information requirements and chemical safety assessment – Chapter R.7a: Endpoint specific guidance"
Qualifier:
no guideline followed
Principles of method if other than guideline:
Not applicable - Handbook data
GLP compliance:
not specified
Physical state at 20°C and 1013 hPa:
solid
Form:
crystalline
Colour:
Colourless
Odour:
other: no data
Substance type:
inorganic
Conclusions:
According to the reference, potassium thiosulphate appears as colourless hygroscopic crystals.

Description of key information

Potassium thiosulfate appears as a colourless hygroscopic crystalline solid.

Key value for chemical safety assessment

Physical state at 20°C and 1013 hPa:
solid
Form:
solid: crystalline
Colour:
colourless

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 potassium thiosulfate as a colourless hygroscopic crystalline solid.