Registration Dossier
Registration Dossier
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EC number: 231-836-6 | CAS number: 7758-19-2
PBT assessment
Administrative data
PBT assessment: overall result
- Name:
- Sodium chlorite
- Type of composition:
- boundary composition of the substance
- State / form:
- solid: bulk
- Reference substance:
- Sodium chlorite
- PBT status:
- the substance is not PBT / vPvB
- Justification:
Persistence assessment
The assessed substance decomposes rapidly indicating that the substance is not a P/vP. Sodium chlorite is a strong oxidizing agent and under proper reducing conditions is readily reduced to chloride, and to a lesser extent, chlorate. Irradiation of sodium chlorite solutions indicated a photodegradation half-life of about 30 minutes with a steady increase in pH (pH 8 to 12.6) and major products identified as hydroxide, chlorine dioxide and chloride with chlorate and hypochlorite as minor products and trace amounts of chlorine.
Conclusion of P / vP assessment
The available half-life data indicate that the assessed substance is not a P.
Bioaccumulation assessment
Screening criteria
The Log Kow for the assessed substance is <= 4.5 indicating that the substance is not a B / vB.
Conclusion of B / vB assessment
Sodium chlorite is highly water soluble with an extremely low Log Pow. There is therefore no concern for potential bioaccumulation from either chlorine dioxide or chlorite.
Toxicity assessment
Sodium Chlorite is classify as acute oral tox 3, acute dermal tox 2, skin corrosive 1B, eye damage 1, STOT Rep Exp 2, acute aquatic 1 and chronic aquatic 3.
Reference
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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