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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Stability: thermal, sunlight, metals

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Administrative data

Link to relevant study record(s)

thermal stability
Type of information:
experimental study
Adequacy of study:
key study
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
according to guideline
other: EC method A.1 (DTA)
according to guideline
OECD Guideline 113 (Screening Test for Thermal Stability and Stability in Air)
GLP compliance:
Test substance thermally stable:
Operating temp.:
< 150 °C
Exothermal decomposition starts at 290 °C.



As no decomposition of the test substance could be observed below 150 °C, OPP is considered to be stable at room temperature.

Description of key information

Stability (thermal and air): stable

Additional information

Exothermal decomposition was found to start at 290 °C during tests according to OECD Guideline 113. Therefore the substance can be considered to be thermally stable.

Justification for classification or non-classification

The available data on thermal stability of the test substance do not meet the criteria for classification according to Regulation (EC) 1272/2008 and are therefore conclusive but not sufficient for classification.