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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Administrative data

boiling point
Data waiving:
study scientifically not necessary / other information available
Justification for data waiving:
the study does not need to be conducted because the substance is a solid which decomposes before boiling
Reason / purpose for cross-reference:
data waiving: supporting information
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2 February 2001
1 (reliable without restriction)
according to guideline
EU Method A.1 (Melting / Freezing Temperature)
Version / remarks:
according to guideline
OECD Guideline 102 (Melting point / Melting Range)
Version / remarks:
GLP compliance:
Type of method:
differential scanning calorimetry
Key result
Melting / freezing pt.:
> 97 - < 98 °C
Decomp. temp.:
> 200 °C

Experiment 1

A small endothermic peak between 41 and 68°C. A large endothermic peak between 85 and 122°C (maximum at 107°C and extrapolated onset temperature at 97°C); this effect is assumed to be caused by melting of the test substance. At > 200°C a small endothermic effect was observed. After the experiment the sample appeared to have been molten and had a yellow colour. Mass loss: 2%. DSC curve: see illustration.

Experiment 2

A small endothermic peak between 40 and 65°C. No changes in appearance and weight. 

Experiment 3

Two endothermic peaks: a small one between 40 and 65°C and a large one between 84 and 113°C. Extrapolated onset temperature of the large peak:98°C. After the experiment the sample had molten; the molten sample was colourless. No significant change in weight.

Experiment 4

Run 1: small endothermic effect  between 39 and 65°C.

Run 2: large endothermic peak  between 73 and 122°C; extrapolated onset temperature: 97°C. Above about 244°C a small endothermic effect was observed. After the experiment the sample appeared to have been molten and had a yellow-brown colour. Mass loss: 0.5%.

The melting temperature of the substance was determined to be 97°C.
Executive summary:

Differential Scanning Calorimetry was performed (EC A.1 and OECD 102). DSC showed a small endothermic effect at < 70°C, a large endothermic melting effect between about 73-123°C and a small endothermic effect starting at about 200°C. The melting temperature (extrapolated onset temperature of the meling peak) was determined in triplicate obtaining a mean value of 97°C.  Reaction and/or decomposition of the substance occurs from 200°C upwards. 

Data source

Materials and methods

Results and discussion

Applicant's summary and conclusion