Registration Dossier
Registration Dossier
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EC number: 233-321-1 | CAS number: 10117-38-1
Appearance / physical state / colour
Administrative data
Link to relevant study record(s)
- Endpoint:
- appearance / physical state / colour
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- from 2008-06-03 to 2008-07-02
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- study well documented, meets generally accepted scientific principles, acceptable for assessment
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- Substance was inspected visually.
- GLP compliance:
- yes
- Physical state at 20°C and 1013 hPa:
- solid
- Form:
- powder
- Colour:
- white
- Odour:
- other: no data
- Substance type:
- inorganic
- Conclusions:
- The test item is a white, fine powder. Homogeneous by visual inspection at room temperature.
- Executive summary:
The test substance, Potassium sulfite, was inspected visually. The test item is a white, fine powder. Homogeneous by visual inspection at room temperature.
- Endpoint:
- appearance / physical state / colour
- Type of information:
- other: Handbook data
- Adequacy of study:
- supporting study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- data from handbook or collection of data
- Remarks:
- Ffrom 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, dipotassium sulfite appears as a colourless hexagonal crystalline.
Referenceopen allclose all
Description of key information
The test item potassium sulfite (K2SO3, Molecular weight 158.26), CAS 10117 -38 -1 is a colourless hexagonal crystalline solid.
Key value for chemical safety assessment
- Physical state at 20°C and 1013 hPa:
- solid
- Form:
- other: powder or crystalline
- Colour:
- colourless
- white
Additional information
For the evaluation of this endpoint, data from one study report and from one handbooks was used as a weight of evidence. According to the REACH regulation (“ECHA, guidance on information requirements and chemical safety assessment – chapter R.7a”), it is allowed to use specific handbook data as a reliable data source. Useful reference books and data compilations containing peer reviewed physico-chemical data include the Merck Index and the CRC Handbook of Chemistry and Physics.
Data available from the CRC handbook describe Potassium sulfite as a colourless hexagonal crystalline.
An unpublished BASF study is available in which the physicol-chemical properties of the substance were characterised. The appearance was determined by visual inspection. The test item is a white, fine powder. Homogeneous by visual inspection at room temperature.
Comparing these two information it can be stated that Potassium sulfite is a colourless to white powder with no specific odour.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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