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Physical & Chemical properties

Appearance / physical state / colour

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Description of key information

According to the references, ammonium sulfite appears as a white hygroscopic crystalline.

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 one handbook (CRC handbook) was used as key information. 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 CRC handbook of Chemistry and Physics.

Data available from the handbook describes ammonium sulfite as a white hygroscopic crystalline.