6,6'-di-tert-butyl-4,4'-butylidenedi-m-cresol

Boiling point

Link to relevant study record(s)

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

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.