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Diss Factsheets

Physical & Chemical properties

Flammability

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Link to relevant study record(s)

Reference
Endpoint:
flammable solids
Type of information:
experimental study
Adequacy of study:
key study
Study period:
19-03-2010 to 15-06-2010
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
Qualifier:
according to guideline
Guideline:
other: UN no. ST/SG/AC.10/11/Rev.4: Recommendations on the transport of dangerous goods, Part III, Test N.1: Test method for readily combustible solids
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Specific details on test material used for the study:
- Name: Magnesium hydroxide
- Batch no. 20BR0026
- CAS No.: 1309-42-8
- Purity: 99.9 %
- Expiry date: 31 January 2012
- Storage Room Temp. in the dark
Key result
Test procedure:
burning rate test: preliminary screening test
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

Preliminary test: In contact with the flame of the gas burner, the test substance glowed. After removal of the ignition source, no propagation of combustion of the test substance was observed (time lapse 4 minutes).

Interpretation of results:
not classified based on GHS criteria
Remarks:
From preliminary test
Conclusions:
The test substance is considered "not highly flammable".
Executive summary:

In a GLP study the flammability of Magnesium hydroxide was tested according to the testing guidelines EEC A.10 and UN N.1.

Within the preliminary test, no propagation of combustion of the test substance along 200 mm length of the pile within 4 minutes was observed. According to the guidelines performance of the burning rate test is therefore not required.

Based on the results obtained the test substance is considered 'not highly flammable'.

Description of key information

It was determined that the test substance is not highly flammable.

Key value for chemical safety assessment

Flammability:
not classified

Additional information

The preliminary screening test was performed to determine the flammability of magnesium hydroxide. No propagation of combustion of the test substance along 200 mm length of the pile within 4 minutes was observed. According to the guidelines, performance of the burning rate test is therefore not required. Based on the results obtained the test substance is considered 'not highly flammable'.

Justification for classification or non-classification

A flammability study was carried out on Magnesium hydroxide. Based on the preliminary test, the test item showed non flammable behaviour. Therefore no further tests have been conducted and the test item is not classified as flammable.