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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Self-ignition temperature of  Pitch, coal tar, high-temp., < 1% 4- to 5-membered condensed ring aromatic hydrocarbons [EC no. 701-305-8](CTPhtht): > 560 °C at 101 kPa (in analogy to pitch, coal tar, high-temp. [CAS No. 65996-93-2])

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:
560 °C

Additional information

The substance Pitch, coal tar, high-temp., < 1% 4- to 5-membered condensed ring aromatic hydrocarbons [CTPhtht] is used as surrogate. CTPhtht is produced from the precursor pitch, coal tar, high-temp. as residue in a distillation that further removes volatile substances and leaves higher membered condensed ring aromatic hydrocarbons. As consequence, the self-ignition temperature of CTPhtht will be at least the same or rather be increased. For characterisation of the autoflammability of CTPhtht, the autoflammability of pitch, coal tar, high-temp. will be used.