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Physical & Chemical properties

Flammability

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Endpoint:
pyrophoric liquids
Data waiving:
study scientifically not necessary / other information available
Justification for data waiving:
other:
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 pyrophoric
Endpoint:
flammable solids
Data waiving:
study technically not feasible
Justification for data waiving:
the study does not need to be conducted because the substance is a liquid
Conclusions:
Determination of flammability is not required for aluminum alkyls due to
their pyrophoric nature.
Endpoint:
substances / mixtures which in contact with water emit flammable gases
Data waiving:
study scientifically not necessary / other information available
Justification for data waiving:
other:

Description of key information

The endpoint is waived: The substance is already classified as a pyrophoric, water reactive liquid.

Key value for chemical safety assessment

Flammability:
spontaneously flammable in air (pyrophoric)

Additional information

According to the Annex VII Standard Information Requirements for REACH, determination of flammability is required. Column 2 - specific rules for adaption from column 1 - states that flammability determination does not need to be conducted in case the substance is pyrophoric. Aluminium alkyls are highly reactive both towards oxygen (air) and water as explained below. They are exclusively marketed in liquid state and shipped under UN transport class 4.2 (substances liable to spontaneous combustion / pyrophoric liquids) or at least under class 4.3 (substances which in contact with water emit flammable gases).

Justification for classification or non-classification