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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Appearance / physical state / colour

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Administrative data

Link to relevant study record(s)

Referenceopen allclose all

Endpoint:
appearance / physical state / colour
Type of information:
other: Handbook data
Adequacy of study:
key study
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:
white
Odour:
other: no data
Substance type:
inorganic
Conclusions:
According to the reference, sodium sulfite appears as white hexagonal crystalline.
Endpoint:
appearance / physical state / colour
Type of information:
other: Handbook data
Adequacy of study:
key study
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:
no data
Form:
powder
Colour:
no data
Substance type:
inorganic
Conclusions:
According to the reference, disodium sulfite appears as small crystals or powder.
Endpoint:
appearance / physical state / colour
Type of information:
other: peer reviewed data
Adequacy of study:
supporting study
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
secondary literature
Qualifier:
no guideline followed
Principles of method if other than guideline:
not applicable - peer reviewed data
GLP compliance:
not specified
Physical state at 20°C and 1013 hPa:
solid
Form:
crystalline
Colour:
white
Form:
powder
Colour:
white
Substance type:
inorganic
Conclusions:
According to the reference, sodium sulfite is a white powder or has a crystaline form.

Description of key information

According to the reference, sodium sulfite has the appearance of a white, hexagonal crystalline or powder.

Key value for chemical safety assessment

Physical state at 20°C and 1013 hPa:
solid
Form:
solid: particulate/powder
Colour:
white

Additional information

For the evaluation of this endpoint data from two handbooks (CRC handbook and the Merck Index) were used as key information, supported by information from the IARC Monographs on the Evaluation of Carcinogenic Risks to Humans. According to the REACH regulation ("ECHA, guidance on information requirements and chemical safety assessment - chapter R.7.a"), it is allowed to use specific handbook data as a reliable data source. 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 sulfite as white hexagonal crystalls or as powder.