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Physical & Chemical properties

Boiling point

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boiling point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Test procedure in accordance with standard OECD 103
according to guideline
OECD Guideline 103 (Boiling point/boiling range)
GLP compliance:
Type of method:
differential scanning calorimetry
Specific details on test material used for the study:
- Source and lot/batch number of test material: MLPC International ref 12012103161 (purité 99.8%)
- Expiration date of the lot/batch: 17/01/2014
- Purity test date: 19/01/2012

Boiling pt.:
> 250 °C
Remarks on result:
other: No decomposition was observed between 25 and 250°C.
Boiling point of DPTU is higher than 250°C.
Executive summary:

A study was performed in to investigate the boiling point of the test substance DPTU (1,3-diphenyl-2-thiourea) and was conducted according to OECD Test Guideline 103.

The boiling point of DPTU is determined to be higher than 250°C.

Description of key information

Boiling point of DPTU is higher than 250°C.

Key value for chemical safety assessment

Boiling point at 101 325 Pa:
250 °C

Additional information

Differents informations are used :

  • According to a prediction QSAR using ACD labs V11.02, boiling point of DPTU (1,3-diphenyl-2-thiourea) is about 323.7-373.7°C at 760 mmHg.

  • According to the QSAR MPWIN, DPTU (1,3-diphenyl-2-thiourea) was predicted to have a boiling point of about 364.92 °C +/- 5% (i.e. in the range 346-383°C)

  • According to SPARC, boiling point of DPTU (1,3-diphenyl -2-thiourea) is about 395.6-408.7 °C at 760 mm Hg.

  • According to the study made with OECD 103, the boiling point of DPTU is determined to be higher than 250°C.