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Physical & Chemical properties

Appearance / physical state / colour

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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:

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.