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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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Endpoint:
relative self-ignition temperature (solids)
Type of information:
experimental study
Adequacy of study:
weight of evidence
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Guideline study reported by an authoritative secondary source
Qualifier:
according to guideline
Guideline:
EU Method A.16 (Relative Self-Ignition Temperature for Solids)
Deviations:
not specified
GLP compliance:
yes
Key result
Relative self-ignition temperature:
> 400 °C
Remarks on result:
other: no ignition detected below 400 °C

Endothermic activity was observed at approximately 53 °C, which is attributed to the melting of the substance

Conclusions:
The test substance does not ignite below the melting point
Endpoint:
relative self-ignition temperature (solids)
Type of information:
not specified
Adequacy of study:
weight of evidence
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Authoritative secondary source peer-reviewed by the Scientific Committee on Health and Environmental Risks (SCHER)
Principles of method if other than guideline:
The testing methodology is not reported
GLP compliance:
not specified
Key result
Remarks on result:
other: No self-ignition temperature could be determined
Conclusions:
There was no self-ignition up to the melting point (53°C)
Endpoint:
relative self-ignition temperature (solids)
Type of information:
not specified
Adequacy of study:
weight of evidence
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
other: Only secondary literature
Principles of method if other than guideline:
The testing methodology is not reported
GLP compliance:
not specified
Relative self-ignition temperature:
635 °C
Remarks on result:
other: Indications on pressure were not provided
Conclusions:
The self-ignition temperature of diphenylamine was reported to be 635°C
Endpoint:
relative self-ignition temperature (solids)
Type of information:
not specified
Adequacy of study:
weight of evidence
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Peer-reviewed literature
Principles of method if other than guideline:
The testing methodology is not reported
GLP compliance:
not specified
Relative self-ignition temperature:
634 °C
Remarks on result:
other: Indications on pressure were not provided
Conclusions:
Diphenylamine was reported to have a high self-ignition temperature of 634°C

Description of key information

Diphenylamine was reported to have a high self-ignition temperature of 634°C

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:
634 °C

Additional information