Registration Dossier
Registration Dossier
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EC number: 209-090-8 | CAS number: 555-31-7
Flammability
Administrative data
Link to relevant study record(s)
Description of key information
Aluminium triisopropylate has been investigated for pyrophoricity and was found negative of having such properties. However, in a test on flammability of solids aluminium triisopropylate was found to be highly flammable. When exposed to water aluminium triisopropylate hydrolyses quantitatively to iso-propanol and aluminium hydroxides not forming flammable gases. Thus, the flammability of the substance is characterized by its highly flammable potential as solid and classified accordingly.
Key value for chemical safety assessment
- Flammability:
- highly flammable
Additional information
The distinction between category 1 and 2 for flammable solids is mainly based on the question, whether the wetted zone stops the propagation of a flame or not. As aluminium triisopropylate is hygroscopic, reacting with water immediately, this test design was technically not feasible. As a result, the substance is classified in a conservative worst-case approach into category 1 for flammable solids.
Justification for classification or non-classification
Based on its flammability when tested according to Method A.10 (Flammability of solids) and its negative pyrophoricity properties and hygroscopic properties, forming iso-propanol and aluminium hydroxides upon contact with water the substance is classified as flammable solid, Category 1 according to CLP (Regulation EC No 1272/2008). A classification as pyrophoric substance or substance reacting with water emitting flammable gases is not required.
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