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Physical & Chemical properties

Oxidising properties

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Reference
Endpoint:
oxidising solids
Data waiving:
study scientifically not necessary / other information available
Justification for data waiving:
the study does not need to be conducted because there are no chemical groups present in the molecule which are associated with oxidising properties and hence, the classification procedure does not need to be applied
the study does not need to be conducted because the substance is incapable of reacting exothermically with combustible materials

Description of key information

The substance does not contain a surplus of oxygen or any structural groups known to be correlated with a tendency to react exothermally with combustible material (in accordance with Regulation (EC) No 1907/2006, Annex VII, Column 2, Section 7.13).

Based on the chemical structure it can be concluded that no oxygen is released. Therefore the substance can be designated as non-oxidising substance. Furthermore, sodium thiosulfate is known to be a reducing agent.

Key value for chemical safety assessment

Oxidising properties:
non oxidising

Additional information

Justification for classification or non-classification

Sodium thiosulfate does not need to be classified according to CLP Regulation (EC) No 1272/2008 since oxidising properties are considered non-relevant based on the chemical structure.