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Physical & Chemical properties

Flammability

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Description of key information

Flammability (1,1,1,3,3,3-hexamethyldisilazane): highly flammable liquid

Key value for chemical safety assessment

Flammability:
highly flammable

Additional information

The flammability study is not required for liquids as flammability is assessed on the basis of flash point. The substance is classified for flammability as aHighly Flammable Liquid Category 2 (H225: Highly Flammable liquid and vapour) in accordance with EC Regulation 1272/2008 on the basis of a measured flash point of 11.4°C and the boiling point of 125°C.

There is no indication on the basis of structure and experience in handling and use that the substance is pyrophoric (flammable in contact with air) or flammable in contact with water.

Therefore, in accordance with Section 1 of REACH Annex XI, there is no need to conduct further flammability testing

Justification for classification or non-classification

The substance is classified as Highly Flammable Liquid Category 2 (H225: Highly Flammable liquid and vapour) according to Regulation 1272/2008. This is on the basis of flash point of 11.4°C and a boiling point of 125°C.