Registration Dossier
Registration Dossier
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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.
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EC number: 233-484-9 | CAS number: 10196-04-0
Additional information on environmental fate and behaviour
Administrative data
- Endpoint:
- additional information on environmental fate and behaviour
- Type of information:
- migrated information: read-across from supporting substance (structural analogue or surrogate)
- Adequacy of study:
- supporting study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: No standard test procedure, but in accordance with generally accepted scientific standards and described in sufficient detail. Peer reviewed.
Data source
Referenceopen allclose all
- Reference Type:
- publication
- Title:
- Oxidation rate of sulfite in water and its bearing on the origin of sulfate in meteoric precipitation
- Author:
- Tsunogai S
- Year:
- 1 971
- Bibliographic source:
- Geochemical Journal 5: 175-185
- Reference Type:
- secondary source
- Title:
- SIDS Initial Assessment Report for SIAM 26, Sodium sulfite, CAS: 7757-83-7, Draft of March 2008
- Author:
- OECD
- Year:
- 2 008
Materials and methods
Test guideline
- Qualifier:
- no guideline followed
- Principles of method if other than guideline:
- The oxidation rate of aqueous sulfite solutions was studied in rainwater and heavy metal containing solutions
- GLP compliance:
- no
Test material
- Reference substance name:
- sulfite solution
- IUPAC Name:
- sulfite solution
Constituent 1
Results and discussion
Any other information on results incl. tables
Oxidation rates of sulfite (initially 0.5 - 0.7 ppm):
| Metal (ppm) | EDTA (mM) | Temp (°C) | Rate constant (h-1) |
| Deionized water | - | 20 -25 | 0.009 |
| - | 0.1 | 20 -25 | 0.0002 |
| Fe, 1 | - | 25 | >4.9 |
| Fe, 1 | 0.1 | 20 -25 | 0.008 |
| Fe, 0.1 | - | 25 | 0.36 |
| Fe, 0.1 | - | 20 | 0.29 |
| Fe, 0.05 | - | 15 | 0.13 |
| Cu, 0.1 | - | 20 | 0.27 |
| Mn, 0.1 | - | 20 | 0.12 |
| Al, 0.1 | - | 20 | 0.086 |
| Co, 0.1 | - | 20 | 0.057 |
| Rain, june 18, 67 | - | 20 | 0.068 |
The reaction is substantially of the first order and the rate is much accelerated by the presence of small amounts of heavy metals. The half-life time of sulfite in the natural rain water is more than a few hours.
Applicant's summary and conclusion
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.
