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Description of key information

lower explosion limit: 3.8-4%
upper explosion limit: 22-29.3%

Key value for chemical safety assessment

extremely flammable

Additional information

Published in peer-reviewed handbooks, acceptable for assessment.

Justification for classification or non-classification

As the lower and upper flammability limits are 3.8 -4% and 22 -29.3%, respectively, the substance has to be classified as extremely flammable (F+, R12 according to EU Directive 67/548/EEC and H220; Cat. 1 according to EU Classification, Labelling and Packaging of Substances and Mixtures (CLP) Regulation (EC) No. 1272/2008). Furthermore, although flash point determination is not required for gases, data is available showing that the substance has a flash point of -78oC (open cup).