Reaction products of disodium 3,5-diamino-2-[(2-sulfonatophenyl)diazenyl]benzoate and  diazotised sodium 2-[(4-aminophenyl)sulfonyl]ethyl sulfate

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 - 08 April 2003.

Reliability:

1 (reliable without restriction)

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:

In line with the UN Recommendations on the Transport of Dangerous Goods (Orange Book, 3rd edition, 1999), testing for oxidising properties is only required if a structural indication for oxidising properties is present. The expert statement describes that this is not the case for FAT40810/A.

GLP compliance:

no

Specific details on test material used for the study:

Identity: FAT 40810/A
Batch: WP 6/02
Purity: approx. 75 %
Appearance: Solid, dark brownish powder
Expiration date: 12 December 2010
Storage: At room temperature at about 20 °C

Sample tested:

other: Expert statement

Parameter:

other: Oxygen balance

Remarks on result:

other: Expert Statement: Non-oxidising

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

Update: Extended Statement (Study 847215) Harlan: April 08, 2009 (requested by Switzerland) Result: non-Oxidizing

Further evaluation has been done by detailing the molecule in small subunits for which a classification with regard to oxidizing properties already exists.

The subunits were:

> sodium benzenesulfonate,

> phenyl vinyl sulfone,

> ethyl phenyl sulfone as well as

> methyl sulfate, sodium salt.

Those substances are not classified to be oxidizing and thus non of the functional groups contributes to any oxidising potential of the substance.

Interpretation of results:

GHS criteria not met

Conclusions:

The substance has no oxidising properties and structurally is not an organic peroxide.

Executive summary:

The oxidizing properties of FAT 40810/A were evaluated based on the molecular structure of the test item. According to the UN Recommendations on the Transport of Dangerous Goods (Orange Book, 3rd edition, 1999), the classification procedure using experimental testing need not to 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 40810/A contains oxygen. A part of the oxygen atoms is also bonded to sulphur. Further evaluation has been done by detailing the molecule in small subunits for which a classification with regard to oxidizing properties already exists.

The subunits were:

sodium benzenesulfonate,

phenyl vinyl sulfone,

ethyl phenyl sulfone and

methyl sulfate, sodium salt.

Those substances are not classified to be oxidizing.

Based on this evaluation, FAT 40810/A is considered to be non-oxidizing and therefore is not to be tested experimentally for the classification under division 5.1 as oxidising substances. Thus, it can be concluded beyond a reasonable doubt that FAT 40810/A is not capable of causing fire or enhancing the risk of fire when in contact with combustible material.

Description of key information

The oxidizing properties of FAT 40810/A were evaluated based on the molecular structure of the test item. According to the UN Recommendations on the Transport of Dangerous Goods (Orange Book, 3rd edition, 1999), the classification procedure using experimental testing need not to 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 40810/A contains oxygen. A part of the oxygen atoms is also bonded to sulphur. Further evaluation has been done by detailing the molecule in small subunits for which a classification with regard to oxidizing properties already exists.

The subunits were:

sodium benzenesulfonate,

phenyl vinyl sulfone,

ethyl phenyl sulfone and

methyl sulfate, sodium salt.

Those substances are not classified to be oxidizing. Based on this evaluation, FAT 40810/A is considered to be non-oxidizing and therefore is not to be tested experimentally for the classification under division 5.1 as oxidising substances. Thus, it can be concluded beyond a reasonable doubt that FAT 40810/A is not capable of causing fire or enhancing the risk of fire when in contact with combustible material.

Key value for chemical safety assessment

Oxidising properties:

non oxidising

Justification for classification or non-classification

Based on an assessment of the structural elements of the main component of FAT40810/A the substance is neither a peroxide nor an oxidizer and thus classification for oxidising properties according to CLP (Regulation EC No 1272/2008) or DSD (Directive 67/548/EEC) is not required.