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Diss Factsheets

Physical & Chemical properties

Boiling point

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Reference
Endpoint:
boiling point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
07 May 2012 to 06 July 2012
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Study performed in accordance with OECD, EU & US EPA test guidance in compliance with GLP.
Reason / purpose for cross-reference:
reference to same study
Reason / purpose for cross-reference:
reference to other study
Qualifier:
according to guideline
Guideline:
OECD Guideline 103 (Boiling point/boiling range)
Qualifier:
according to guideline
Guideline:
EU Method A.2 (Boiling Temperature)
Qualifier:
according to guideline
Guideline:
EPA OPPTS 830.7220 (Boiling Point / Boiling Range)
GLP compliance:
yes
Type of method:
differential scanning calorimetry
Atm. press.:
1 013.25 hPa
Decomposition:
yes
Decomp. temp.:
> 325 °C
Remarks on result:
other: Boiling of the test substance was not observed below the temperature at which reaction and/or decomposition started.

Preliminary test: 1.80 mg test substance was heated at a rate of 20°C/minute from 25°C to 393°C. At this point 70% weight loss of the test substance was observed. After the experiment, the sample was cooled to 50°C and the consistency of the test substance was determined.

 

Main Study: An overview of the experimental conditions of the main study is given below.

 

Experiment

I

II

Sample amount (mg)

3.14

3.53

Initial temperature (°C)

25

25

Rate (°C/minute)

20

20

End temperature (°C)

400

400

The experiments were performed under a flow if nitrogen and at atmospheric pressure.

Conclusions:
Reaction and/or decomposition of the test substance was observed at temperatures of > 325°C (> 598K). Boiling of the test substance was not observed below the temperature at which reaction and/or decomposition started. Based on this, the test substance has no boiling temperature.
Executive summary:

Study performed in accordance with European Community (EC), EC no. 440/2008, Part A: Methods for the Determination of Physico-Chemical Properties, Guideline A.2: “Boiling Temperature”, OECD Guidelines for the Testing of Chemicals no. 103: "Boiling Point" and United States Environmental Protection Agency (EPA), Product Properties Test Guidelines no. OPPTS 830.7220: "Boiling Point/Boiling Range". The study was performed in compliance with the Principles of Good Laboratory Practice (GLP).

 

The boiling temperature of 6,6’-di-tert-butyl-4,4’-butylidenedi-m-cresol was determined using DSC.

 

Reaction and/or decomposition of the test substance was observed at temperatures of > 325°C (> 598K). Boiling of the test substance was not observed below the temperature at which reaction and/or decomposition started. Based on this, the test substance has no boiling temperature.

Description of key information

Result determined by experimental method utilising OECD, EU & US EPA test guidance.

The test substance has no boiling temperature

Key value for chemical safety assessment

Additional information

Reaction and/or decomposition of the test substance was observed at temperatures of > 325°C (> 598K). Boiling of the test substance was not observed below the temperature at which reaction and/or decomposition started. Based on this, the test substance has no boiling temperature.