Registration Dossier

Physical & Chemical properties

Flammability

Currently viewing:

Administrative data

Link to relevant study record(s)

Description of key information

The lower and upper explosion limits of this Category are 1.6 - 10 %.

Key value for chemical safety assessment

Flammability:
extremely flammable

Additional information

Flammability data were not available for any of the streams within this Category. However as the category consists of mainly C4 hydrocarbons, data were read across from hydrocarbon C4 substances (CAS numbers 107-01-7: gas LEL 1.7% - UEL 9.7% , 115-11-7: gas LEL 1.8% – UEL 9.6%, 106-98-9: gas LEL 1.6% - UEL 10%, 25167-67-3: gas LEL 1.6% - UEL 10%). All information came from a peer reviewed handbook (CRC, 2008).

Based on the explosion limits for the category members (1.6 to 10 %), all category members are classified as Flammable gas category 1.

Justification for classification or non-classification

Flammability data are not available for any of the streams within Category C. However as the category consists of mainly C4 hydrocarbons, data were read across from hydrocarbon C4 substances (CAS numbers 107-01-7, 115-11-7, 106-98-9, 25167-67-3). The lower and upper explosion limits of Category C are therefore determined as 1.6 - 10%. Based on this range members of Category C are classified as Category 1 extremely flammable gases under the CLP Regulations.