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Reference
Endpoint:
oxidising solids
Type of information:
other: Expert statement
Adequacy of study:
key study
Study period:
13 July 2006
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 statement
GLP compliance:
no
Sample tested:
other: Oxygen balance
Parameter:
other: Based on chemical structure and expert statement
Remarks on result:
other: Due to a negative oxygen balance and therefore a surplus of carbon atoms, the test substance is not capable of causing fire or enhancing the risk of fire when in contact with combustible material and is considered to be non-oxidising.

EXPERT STATEMENT:


The oxidizing properties of FAT 40826/A were screened based on the UN recommendations on the Transport of Dangerous Goods (Orange Book 3rd 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 40826/A contains chlorine, fluorine and oxygen. Chlorine and fluorine are bonded to carbon only, whereas a part of the oxygen atoms are bonded to sulphur. Thus, the conditions of the UN recommendations were not fulfilled and the oxygen balance was used as a third criterion to predict oxidizing properties: The oxygen balance of FAT 40826/A as calculated 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 of carbon atoms for a complete reaction according to the following reaction scheme: CxHyOz+ [x+(y/4)-(z/2)]O2 --> xCO2+ (y/2)H2O. Based on the internationally recognized UN recommendation criteria and on the oxygen balance, FAT 40826/A 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 40826/A 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, FAT 40826/A 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. So based on the oxygen balance in expert statement, FAT 40826/A is considered to be non-oxidising.

Description of key information

Based on the oxygen balance, 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 prepared 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.

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.