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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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Description of key information

The self ignition temperature of formaldehyde is determined to be ca 395 °C

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:
395 °C

Additional information

According to a study from BASF (1996, Key) the self iginition was determined (according to DIN 51794) to be 395 °C. This result is supported by the following handbook data which report the following values: CRC (2010), Knovel (2012), RömppChemie (2015) report a self-ignition temperature of 424 °C. Gestis (2015), and Ullmanns (2012) report a self ignition temperature of 430 °C. The Merck Index (2013) reports a self-ignition temperature of 300 °C. Based on these data the self ignition temperature of formaldehyde is determined to be ca 395 °C