Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Auto flammability

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Administrative data

Link to relevant study record(s)

Description of key information

WoE approach was used to select the key value from the self-ignition values of the constituents of the substance.

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:
316 °C

Additional information

The substance is composed of acetic anhydride (5-10 wt. %), adipic acid,di-anhydride with bis(acetic acid) (50-62 wt. %) and acetic acid (30-35 wt. %). The self-ignition temperature of acetic anhydride is 316°C and the corresponding value for acetic acid is 436°C. The auto flammability temperature of the target substance is related to the auto flammability of acetic anhydride. Also from risk assessment point of view it is reasonable to choose the lower temperature (316°C) as a key value in the CSA.