[No public or meaningful name is available]

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:

Study completion date - 22 March 2005.

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: non GLP compliant no guideline study, available as unpublished report, no restrictions, fully adequate for assessment.

Qualifier:

no guideline required

Principles of method if other than guideline:

Expert statement

GLP compliance:

no

Specific details on test material used for the study:

Identity: FAT 40819/A
Description: Red brown powder
Batch number: Red ROE 420 BOP 01/04
Purity: approx. 77 %
Stability of test item: Stable under storage condition
Expiry date: 02 November 2009
Storage conditions: At room temperature.

Key result

Parameter:

other: Oxygen Balance

Remarks on result:

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

EXPERT STATEMENT:

The oxidizing properties of FAT 40819/A 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 40819/A contains chlorine and oxygen. Chlorine is 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 40819/A is negative as calculated based on the UN recommendations and taking carbon, hydrogen and oxygen into consideration. In principle this means, that there is a surplus of 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 on the oxygen balance, FAT 40819/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 40819/A is not capable of causing fire or enhancing the risk of fire when in contact with combustible material. Furthermore, based on our experience with over 100 structurally related test items (dyestuffs), the test item has not to be classified as oxidizing.

Interpretation of results:

GHS criteria not met

Conclusions:

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

Executive summary:

The oxidizing properties of FAT 40819/A 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 40819/A contains chlorine and oxygen. Chlorine is 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 40819/A is negative as calculated based on the UN recommendations and taking carbon, hydrogen and oxygen into consideration. In principle this means, that there is a surplus of 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 on the oxygen balance, FAT 40819/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 40819/A is not capable of causing fire or enhancing the risk of fire when in contact with combustible material. Furthermore, based on our experience with over 100 structurally related test items (dyestuffs), the test item has not to be classified as oxidizing.

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 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 and has not to be classified as oxidizing (RCC 2005).

Justification for classification or non-classification

As the test substance has no oxidising properties, classification is not needed according to the Directive 67/584/EEC and according to the EU Classification, Labelling and Packaging of Substances and Mixtures (CLP) Regulation (EC) No. 1272/2008.