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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.

Diss Factsheets

Environmental fate & pathways

Biodegradation in soil

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Administrative data

Link to relevant study record(s)

Reference
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

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]