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Physical & Chemical properties

Flammability

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Reference
Endpoint:
flammable solids
Type of information:
experimental study
Adequacy of study:
weight of evidence
Study period:
Testing was conducted between 31 March 2010 and 24 August 2010.
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
EU Method A.10 (Flammability (Solids))
Deviations:
no
GLP compliance:
yes
Key result
Test procedure:
burning rate test: preliminary screening test
Burning time:
2 min
Remarks on result:
substance does not ignite and propagate combustion either by burning with flame or smouldering along 200 mm of the powder train within the 2 minutes test period
Remarks:
The pile failed to ignite during the two minutes that the Bunsen burner flame was applied.

Results

Preliminary screening test

The pile failed to ignite during the two minutes that the Bunsen burner flame was applied.

The result of the preliminary screening test obviated the need to perform the main test.

Moisture content

 

Determination A

Determination B

a) Mass of loss bottle (g)

20.3138

20.1029

b) Mass of loss bottle and test item (g)

21.3084

21.1095

c) Mass of loss bottle and test item    after drying (g)

21.3085

21.1097

Moisture content (% w/w)

<0.1

<0.1

Mean moisture content (% w/w)

<0.1

Interpretation of results:
not classified based on GHS criteria
Conclusions:
The test item has been determined to be not highly flammable as it failed to ignite in the preliminary screening test.
Executive summary:

General physico-chemical properties of the test item have been determined.

Methods employed are designed to be compatible with those specified in Commission Regulation (EC) No 440/2008 of 30 May 2008, Part A: Methods for the determination of physico-chemical properties.

Method

The flammability (solids) was determined by measuring the burning rate of test item prepared as a pile of set dimensions. Testing was conducted using a method designed to be compatible with Method A10 Flammability (Solids) of Commission Regulation (EC) No 440/2008 of 30 May 2008.

Conclusion

The test item has been determined to be not highly flammable as it failed to ignite in the preliminary screening test.

Description of key information

Flammability: Non-flammable

Key value for chemical safety assessment

Flammability:
not classified

Additional information

HEDP-H is involatile and has been demonstrated to have high melting temperature of >450°C. The requirement to test the substance for pyrophoricity and flammability in contact with water was waived in accordance with Section 1 of REACH Annex IX, because there is no indication on the basis of structure and experience in use and handling that the substance is pyrophoric (flammable in contact with air) or flammable in contact with water.

 

Preliminary screening study was performed with HEDP acid according to test method A.10 flammability of solids. The test material failed to ignite during the preliminary study and no further testing was performed.

Justification for classification or non-classification

HEDP acid is not classified for flammability. The submission substance failed to ignite in preliminary screening study performed in accordance with EU test method A.10.

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