Tris(2-ethylhexyl) phosphate

Flammability

Link to relevant study record(s)

Reference

Reference 1

Endpoint:

self-heating substances / mixtures

Data waiving:

study technically not feasible

Justification for data waiving:

the study does not need to be conducted because the substance is a liquid

Justification for type of information:

JUSTIFICATION FOR DATA WAIVING
According to ECHA Guidance on the Application of the CLP Criteria (v5.0, July 2017, §2.11.4.2.), the phenomenon of self-heating generally applies only to solids. The surface of liquids is not large enough for reaction with air and the test method (UN N4) is not applicable to liquids. Therefore liquids, unless adsorbed, are not classified as self-heating.
Moreover, the chemical structure does not contain metals, which are typically self-heating substances.

Reason / purpose for cross-reference:

data waiving: supporting information

Reference 2

Endpoint:

substances / mixtures which in contact with water emit flammable gases

Data waiving:

study scientifically not necessary / other information available

Justification for data waiving:

the study does not need to be conducted because the organic substance does not contain metals or metalloids and hence, the classification procedure does not need to be applied

the study does not need to be conducted because the experience in production or handling shows that the substance does not react with water, e.g. the substance is manufactured with water or washed with water

Justification for type of information:

JUSTIFICATION FOR DATA WAIVING
According to REACh Annex XI / section 1, study for flammability if contact with water is deemed unnecessary, based on the experience in handling, testing and use of the substance.
Moreover, the chemical structure does not fall into critical categories described in the ECHA Guidance on the Application of the CLP Criteria (v5.0, July 2017, §2.12.7.1.) or in the Bretherick’s Handbook of Reactive Chemical Hazards (6th Edition, 1999, Volume 2, water-reactive compounds) (e.g. no acid anhydrides, halides, oxides, alkali metals, alkyl aluminium derivatives, alkyl metals, complex or metal hydrides, metal phosphides, certain metal powders...).

Reference 3

Endpoint:

flammable liquids: obsolete as covered by section 'Flash point'

Data waiving:

study technically not feasible

Justification for data waiving:

the study does not need to be conducted because the substance is a liquid

Justification for type of information:

JUSTIFICATION FOR DATA WAIVING
According to REACh Annex XI / section 2, flammability study UN N1 relevant for classification criteria under IUCLID Section 4.13 does not apply to liquids. Please refer to Flash Point under IUCLID section 4.11.

Reason / purpose for cross-reference:

reference to other study

Reference 4

Endpoint:

pyrophoric liquids

Data waiving:

study scientifically not necessary / other information available

Justification for data waiving:

the study does not need to be conducted because the substance is known to be stable in contact with air at room temperature for prolonged periods of time (days) and hence, the classification procedure does not need to be applied

Description of key information

Flammability: non-flammable liquid; experimentally determined flash point > 60 °C at 101.325 kPa.

Key value for chemical safety assessment

Flammability:

not classified

Additional information

According to REACh Annex XI / section 2, flammability study UN N1 relevant for classification criteria under IUCLID Section 4.13 does not apply to liquids. Therefore testing for flammability is technically not feasible, and can be waived.

 

For liquids the primary value for ease of ignition is the flash point conducted using Method A9 ‘Flash Point Method’ of Council Regulation (EC) No 440/2008. The result of the Flash Point test is used to allocate a liquid substance into the appropriate flammability class. Other measures of flammability include pyrophoricity and flammability on contact with water. These can be considered not a concern for the substance and testing waived if consideration of the structure and experience in handling and use show that no effects are envisaged. Such a screening procedure represents an intelligent testing strategy for flammability. If applied correctly then only liquid substances for which it is suspected will give a positive result in either the pyrophoric properties or flammability on contact with water tests need to be tested.

 

A review of the structure suggests that there are no chemical groups present that would imply pyrophoric properties or flammability on contact with water. A review of handling and used implies no pyrophoric properties or flammability on contact with water. Based on the absence of structural alerts and experience in handling and use negative results are predicted for pyrophoric properties and flammability of contact with water. Based on the known Flash Point of the substance it is considered not to be flammable.

As a liquid, no self-heating anticipated either.

 

References:

1. Bretherick (1999) Bretherick’s Handbook of Chemical Reactive Hazards: An Indexed Guide to Published Data, 6th Edition (2 volume set).

2. ECHA Guidance on Information Requirements and Chemical Safety Assessment (Chapter R.7a: Endpoint Specific Guidance, R.7.1.10.2).

3. REACH Regulation (EC) 1907/2006, Annex XI, section 2

4. CLP Regulation (EC) 1272/2008, Annex I, section 2.6.1

5. ECHA Guidance on Application on the CLP Criteria, sections 2.6 and 2.11

 

Moreover, the substance can be use as flame retardant, which supports the low potential for flammable properties.

Justification for classification or non-classification

The substance does not meet the criteria for classification in accordance with Regulation (EC) No 1272/2008 (CLP): The substance has an experimentally determined flash point > 60 °C and therefore cannot be considered a “flammable liquid”.