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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
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
Key result
Form:
powder
Colour:
Gray-white
Odour:
other: no data
Substance type:
inorganic
Conclusions:
According to the reference, sodium dithionite is a grayish-white powder.
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
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
Key result
Form:
crystalline
Colour:
white or grayish-white
Odour:
other: slightly characteristic odour
Substance type:
inorganic
Conclusions:
According to the reference, sodium dithionite is a white or grayish-white, crystalline powder with a slight characteristic odour.

Description of key information

Sodium dithionite is a grayish-white powder with a slight characteristic odour (handbook).

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 as a weight of evidence. 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" and therefore, the description of sodium dithionite could be regarded as valid.