Registration Dossier

Physical & Chemical properties

Oxidising properties

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Administrative data

Link to relevant study record(s)

Description of key information

Waiving

Key value for chemical safety assessment

Oxidising properties:
no

Additional information

According to Annex VII of the REACH Regulation EC n. 1907/2006 the study does not need to be conducted if the substance is incapable of reacting exothermically with combustible materials, for example on the basis of the chemical structure (e.g. organic substances not containing oxygen or halogen atoms and these elements are not chemically bonded to nitrogen or oxygen, or inorganic substances not containing oxygen or halogen atoms).

Based on the information and review of the substance, it is deemed not to be potentially oxidising, based on the chemical structure, the oxygen balance values and the known experience in the handling and use of substances..

Justification for classification or non-classification

According to the CLP regulation EC n. 1272/2008, 2.14.4.1 section, for organic substances the classification procedure for the oxidising solid class shall not apply if:

(a) the substance or mixture does not contain oxygen, fluorine or chlorine; or

(b) the substance or mixture contains oxygen, fluorine or chlorine and these elements are chemically bonded only to carbon or hydrogen.

For inorganic substances or mixtures the classification procedure for this class shall not apply if they do not contain oxygen or halogen atoms.

The substance to be registered failed to satisfy the screening criteria reported in the CLP Regulation,because it contains oxygen chemically bonded not only to carbon or hydrogen (i.e. SO3-).

However, based on the REACH regulation EC n. 1907/2006, Annex VII, Column 2, the study does not need to be conducted if:

- the substance is explosive

- the substance is highly flammable

- the substance is an organic peroxide

- the substance is incapable of reacting exothermically with combustible materials, for example on the basis of the chemical structure (e.g. organic substances not containing oxygen or halogen atoms and these elements are not chemically bonded to nitrogen or oxygen, or inorganic substances not containing oxygen or halogen atoms).

According to this second definition, the substance has been not tested because it doesn't contain chemical group associated to oxidizing properties. Further evaluation has been done on oxygen balance and chemical fragments of the molecule.

Based on the information and review on the substance, it is deemed not to be potentially oxidising, based on the chemical structure, the oxygen balance values and the known experience in the handling and use of use of the AZO dye substance.