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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Administrative data

Link to relevant study record(s)

Reference
Endpoint:
oxidising solids
Type of information:
calculation (if not (Q)SAR)
Adequacy of study:
key study
Study period:
21 August 2019
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
accepted calculation method
Justification for type of information:
The regulatory position (specifically the EU Registration, Evaluation, Authorisation and Restriction of Chemicals, REACH, Regulation) with regards to oxidising properties is that a study does not need to be conducted if:

• the substance is explosive; or

• the substance is highly flammable; or

• the substance is an organic peroxide; or

• the substance is incapable of reacting exothermically with combustible materials, for example on the basis of the chemical structure (e.g. organic substances not containing oxygen or halogen atoms and these elements are not chemically bonded to nitrogen or oxygen, or inorganic substances not containing oxygen or halogen atoms).

A full test does not need to be conducted for solids if any preliminary evaluation clearly indicates that the test substance has oxidising properties.
Principles of method if other than guideline:
Before performing a test to determine a substances oxidizing properties, it is important to check that this test is applicable to the substance.
A substance may have oxidizing properties when:
• the electronegative atoms which are present constitute a high proportion of the molecule and are bound to elements in a high oxidation state;
• the electronegative atoms are bonded to each other or to other electronegative elements such as iodine, nitrogen, sulphur or phosphorus.

Compounds which have no highly electronegative atom - oxygen, fluorine, chlorine, bromine - are not likely to possess oxidizing properties. Similarly, where these elements are present but the atoms are only bonded to carbon and/or hydrogen, then oxidizing properties are unlikely

As the ability to predict the reactivity of chemicals compounds from their structure is somewhat limited, the best approach is by analogy with existing compounds whom are known to be oxidisers. As such, there is is a known list of oxidizing compounds and reactive groups which increase the oxidizing power of a molecule. However this list is not exhaustive. If the substance meets one of the above criteria, the lack of any reactive group may not be sufficient to justify not performing the A 17 test.
GLP compliance:
no
Specific details on test material used for the study:
No further details specified in the study report
Contact with:
other: Visual assessment
Key result
Sample tested:
other: Not applicable/ Calculated
Parameter:
other: Oxygen balance
Result:
ca. -225.13 other: OB%
Remarks on result:
other: N=1
Key result
Sample tested:
other: Not applicable/ Calculated
Parameter:
other: Oxygen balance
Result:
ca. -231.25 other: OB%
Remarks on result:
other: N=3
Key result
Sample tested:
other: Not applicable/ Calculated
Parameter:
other: Oxygen balance
Result:
ca. -233.09 other: OB%
Remarks on result:
other: N=5

Oxygen balance <-200 for each of the structures assessed.

Interpretation of results:
study cannot be used for classification
Conclusions:
The substance contains no structural indications of propensity to cause oxidation, and the oxygen balance is not indicative of excess oxygen. On this basis, the substance is predicted to be not an oxidiser
Executive summary:

Epoxy Resin B is polymeric in nature. At the request of the client, various molecules with n=1,3 or 5 where assessed.

Based on the information and review of the structure of the substance, Epoxy Resin B is deemed not to be potentially oxidising, based on the chemical structure and oxygen balance values.

The substance contains no structural indications of propensity to cause oxidation, and the oxygen balance is not indicative of excess oxygen. On this basis, the substance is predicted to be not an oxidiser.

 

Description of key information

The substance contains no structural indications of propensity to cause oxidation, and the oxygen balance is not indicative of excess oxygen. On this basis, the substance is predicted to be not an oxidiser

Key value for chemical safety assessment

Oxidising properties:
non oxidising

Additional information

Justification for classification or non-classification