Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 231-890-0 | CAS number: 7775-14-6
Appearance / physical state / colour
Administrative data
Link to relevant study record(s)
- 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.
Referenceopen allclose all
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
- Form:
- solid: particulate/powder
- Colour:
- grey
- white
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.
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.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
