3,10-bis[(4-amino-2,5-disulphophenyl)amino]-6,13-dichlorotriphenodioxazine-4,11-disulphonic acid

Oxidising properties

Link to relevant study record(s)

Reference

Endpoint:

oxidising solids

Type of information:

other: expert judgement

Adequacy of study:

key study

Study period:

2022

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

study well documented, meets generally accepted scientific principles, acceptable for assessment

Qualifier:

no guideline required

Principles of method if other than guideline:

Expert Judgement

Parameter:

other: oxidising properties

Remarks on result:

other: non-oxidising based on an expert judgement

Interpretation of results:

GHS criteria not met

Conclusions:

Non oxidising

Executive summary:

Method:

Expert Judgement.

Results:

Non oxidising.

Description of key information

Expert Judgement - Non oxidising 

Key value for chemical safety assessment

Oxidising properties:

non oxidising

Justification for classification or non-classification

Based on Annex VII, Column 2 of the REACH Regulation (EC n. 1907/2006), the study does not need to be performed based on the absence of structural alerts.

An oxidising substance is one that, while it is itself not necessarily combustible, it may cause or contribute to the combustion of other materials. Oxidising substances generally act by yielding oxygen; however, those that release active halogens can also act as oxidants.

For organic substances only, is commonly used and accepted a screening evaluation that take into account the degree to which a substance can be oxidized, related to the chemical structure: the Oxygen Balance (OB) calculation may be used as a further criterium, in combination with chemical structure evaluation, in order to predict whether a substance has the potential to be an oxidant. The oxygen balance is calculated from the empirical formula of a compound in percentage of oxygen required for complete conversion of carbon to carbon dioxide and hydrogen to water.

The oxygen balance is calculated using the formula:

 

Oxygen balance = - 1600 [2x + (y/2)-z]/molecular weight;

 

where:

X = number of atoms of carbon

Y = number of atoms of hydrogen

Z = number of atoms of oxygen

 

A negative oxygen balance is an indication that the substance contains less oxygen than is needed; therefore it is not expected that the substance may, generally by yielding oxygen, cause, or contribute to the combustion of other materials.

Oxygen balance was calculated and resulted equal to -76.35.

Specific rules for adaptationas decribed in Annex VII, Column 2 of the REACH Regulation (EC n. 1907/2006) can be applied and the oxidising properties test does not need to be conducted.