2-{4-[4-[4-fluoro-6-(2-(2-vinylsulfonylethoxy)ethylamino)-1,3,5-triazin-2-ylamino]phenylazo]phenylazo}naphthalene-4,6,8-trisulfonate, trisodium salt

Oxidising properties

Link to relevant study record(s)

Reference

Endpoint:

oxidising solids

Type of information:

other: Expert statement

Adequacy of study:

key study

Study period:

08 May 2001

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:

Based on expert statement.

GLP compliance:

no

Parameter:

other: Basis of expert statement

Remarks on result:

other: FAT 40'800/A is not capable of causing fire or enhancing the risk of fire when in contact with combustible material.

EXPERT STATEMENT:

The oxidizing properties of FAT 40800 were screened based on the UN recommendations on the Transport of Dangerous Goods (Orange Book 3^rd edition, 1999) where a set of criteria is compiled to evaluate the need for classification of materials as oxidizing substances. According to the criteria as described in the above mentioned UN document:

- the classification procedure using experimental testing need not be applied for organic compounds if the compound does not contain oxygen, fluorine or chlorine

and

– the classification procedure using experimental testing need not be applied for organic compounds if the compound contains oxygen, fluorine or chlorine and these elements are chemically bonded only to carbon and hydrogen.

FAT 40800 contains fluorine and oxygen. Fluorine is bonded to carbon only, whereas most of the oxygen atoms are bonded to sulphur. Thus, the conditions of the UN recommendations are not fulfilled and the oxygen balance was used as a third criterion to predict oxidizing properties: The oxygen balance of FAT 40800 as calculated for the main compound according to the UN recommendations and taking carbon, hydrogen and oxygen into consideration, was found to be negative. In principle this means, that there is a surplus on carbon atoms for a complete reaction according to the following reaction

 

C_xH_yO_z+ [x+(y/4)-(z/2)]O₂--> xCO₂+ (y/2)H₂O.

 

Based on the internationally recognised UN recommendation criteria and the oxygen balance, FAT 40800 is considered to be non-oxidizing and therefore is not to be tested experimentally for the classification under division 5.1 as oxidizing substances. Thus it can be concluded beyond a reasonable doubt that FAT 40800 is not capable of causing fire or enhancing the risk of fire when in contact with combustible material.

Interpretation of results:

GHS criteria not met

Conclusions:

Based on the oxygen balance, the test substance is considered to be non-oxidising.

Executive summary:

An expert statement was made stating that, due to a negative oxygen balance and therefore a surplus of carbon atoms, it can be concluded beyond a reasonable doubt that the test substance is not capable of causing fire or enhancing the risk of fire when in contact with combustible material. Based on the expert statement and negative oxygen balance, FAT 40800/A is considered to be non-oxidising.

Description of key information

The test substance is considered to be non-oxidising.

Key value for chemical safety assessment

Oxidising properties:

non oxidising

Additional information

An expert statement was made stating that, due to a negative oxygen balance and therefore a surplus of carbon atoms, it can be concluded beyond a reasonable doubt that the test substance is not capable of causing fire or enhancing the risk of fire when in contact with combustible material. Based on the expert statement and negative oxygen balance, FAT 40800/A is considered to be non-oxidising.

Justification for classification or non-classification

The test substance has been considered to be non-oxidising based on the expert statement, hence does not warrant classification according to the EU Classification, Labelling and Packaging of Substances and Mixtures (CLP) Regulation (EC) No. 1272/2008.