Registration Dossier
Registration Dossier
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EC number: 231-836-6 | CAS number: 7758-19-2
Biodegradation in soil
Administrative data
Link to relevant study record(s)
- Endpoint:
- biodegradation in soil: simulation testing
- Data waiving:
- study scientifically not necessary / other information available
- Justification for data waiving:
- other:
- Justification for type of information:
- In accordance with Column 1 of Annex IX, soil simulation testing is required for substances with a high potential for adsorption to soil. Sodium chlorite has low adsorption potential since the log Kow is of -2.7 (<3). Moreover, in accordance with column 2 of REACH Annex IX, the biodegradation studies in soil (simulation tests) do not need to be conducted since there is no need to investigate further the degradation of the substance and its degradation products. Sodium chlorite is a strong oxidizing agent and under proper reducing conditions is readily reduced to chloride, and to a lesser extent, chlorate. In strong acidic conditions, chlorite can change into chlorine dioxide (from pg. 11, USEPA/OPPTS; Reregistration Eligibility Decision (RED) for Chlorine Dioxide and Sodium Chlorite (Case 4023) p.1 (August 2006) EPA-HQ-OPP-2006-0328-0022/EPA 738-R-06-007. Available from, as of July 31, 2008: http://www.regulations.gov/search/Regs/home.html#home]
- Transformation products:
- not measured
Reference
Description of key information
In accordance with Column 1 of Annex IX, soil simulation testing is required for substances with a high potential for adsorption to soil. Sodium chlorite has low adsorption potential since the log Kow is of -2.7 (<3). Moreover, in accordance with column 2 of REACH Annex IX, the biodegradation studies in soil (simulation tests) do not need to be conducted since there is no need to investigate further the degradation of the substance and its degradation products.
Key value for chemical safety assessment
Additional information
Sodium chlorite is a strong oxidizing agent and under proper reducing conditions is readily reduced to chloride, and to a lesser extent, chlorate. In strong acidic conditions, chlorite can change into chlorine dioxide (from pg. 11, USEPA/OPPTS; Reregistration Eligibility Decision (RED) for Chlorine Dioxide and Sodium Chlorite (Case 4023) p.1 (August 2006) EPA-HQ-OPP-2006-0328-0022/EPA 738-R-06-007. Available from, as of July 31, 2008: http://www.regulations.gov/search/Regs/home.html#home]
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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