Registration Dossier
Registration Dossier
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EC number: 923-511-9 | CAS number: -
Oxidising properties
Administrative data
Link to relevant study record(s)
Description of key information
There are no constituents or chemical groups present in Green liquor sludge that could be associated with oxidative properties, whicht would lead to classification if tested. For Green liquor sludge, danger of oxidative properties is not a concern and no classification is needed.
Key value for chemical safety assessment
- Oxidising properties:
- no
Additional information
Justification for classification or non-classification
The chemical structure of Green liuqor sludge and its manufacturing process does not indicate the presence of highly oxidizing constituents or remarkable oxidizing potential. GLS is separated from a liquid (pulp mill green liquor), which is known to be a reducing solution rather than oxidizing.
Green liquor sludge contains mineral constituents, which may in theory have some potential for spontaneous but generally slow oxidation-reduction reactions. However, these constituents cannot be regarded as highly reactive or highly unstable groups. GLS has a high content of carbonates. Normally carbonates have flame retarding properties since CO2 is evolved in heating.
The known structure does not indicate that GLS would present a danger of oxidation and increase the burning rate or burning intensity of a combustible test reference substance, under the conditions of the test as described in Test Guideline A.17. Oxidising properties (solids) of the EC Regulation No 440/2008.
The molecular/ionic structure of GLS and its constituents do not indicate the presence of highly oxidizing constituents or remarkable oxidizing potential. For Green liquor sludge, danger of oxidative properties is not a concern and no classification is needed.
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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