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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Physical & Chemical properties

Oxidising properties

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Administrative data

Link to relevant study record(s)

Description of key information

In accordance with column 2 of Annex VII of the REACH regulation, the substance disodium 5-amino-4-hydroxy-3-(phenylazo)naphthalene-2,7-disulphonate (Common Name: D&C Red 33) is incapable of reacting exothermically with combustible materials,on the basis of the chemical structure. It is an organic substance containing oxygen atoms but no halogen atoms but these elements are not chemically bonded to nitrogen or oxygen. THus, the chemical is unlikely to exhibit oxidising properties and this study was therefore considered for waiver. The chemical is not considered to be Oxidising for the purpose of chemical safety assessment.

Key value for chemical safety assessment

Oxidising properties:
no

Additional information

In accordance with column 2 of Annex VII of the REACH regulation, the substance disodium 5-amino-4-hydroxy- 3-(phenylazo)naphthalene- 2,7-disulphonate (Common Name: D&C Red 33) is incapable of reacting exothermically with combustible materials,on the basis of the chemical structure. It is an organic substance containing oxygen atoms but no halogen atoms but these elements are not chemically bonded to nitrogen or oxygen. THus, the chemical is unlikely to exhibit oxidising properties and this study was therefore considered for waiver. The chemical is not considered to be Oxidising for the purpose of chemical safety assessment.

Justification for classification or non-classification

In accordance with column 2 of Annex VII of the REACH regulation, the substance disodium 5-amino-4-hydroxy-3-(phenylazo)naphthalene- 2,7-disulphonate (Common Name: D&C Red 33) is incapable of reacting exothermically with combustible materials,on the basis of the chemical structure. It is an organic substance containing oxygen atoms but no halogen atoms but these elements are not chemically bonded to nitrogen or oxygen. THus, the chemical is unlikely to exhibit oxidising properties and this study was therefore considered for waiver. The chemical is not considered to be Oxidising for the purpose of chemical safety assessment as well as for the purpose of CLP Classification.