[1,1'-Biphenyl]-2,2'-diol, 3,3'-bis(1,1-dimethylethyl)-5,5'-dimethoxy-

Boiling point

Administrative data

Endpoint:

boiling point

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: GLP- and Guideline Study, but exact data of barometric pressure are missing. Observations during the experiment indicate decomposition.

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2008

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

EU Method A.2 (Boiling Temperature)

GLP compliance:

yes (incl. QA statement)

Type of method:

differential scanning calorimetry

Test material

Test material information

Constituent 1

Reference substance name:

6,6'-di-tert-butyl-4,4'-dimethoxy-[1,1'-biphenyl]-2,2'-diol

EC Number:

604-200-4

Cas Number:

14078-41-2

Molecular formula:

C22 H30 O4

IUPAC Name:

6,6'-di-tert-butyl-4,4'-dimethoxy-[1,1'-biphenyl]-2,2'-diol

Results and discussion

Boiling point

Boiling pt.:

ca. 315 - ca. 366 °C

Atm. press.:

ca. 1 013 hPa

Decomposition:

yes

Any other information on results incl. tables

In this test the anticipated endothermal melting peak was recorded with an onset-Temperature of 219.52°C. A further endothermal peak, which would indicate the boiling point, was not detected. Instead of this the thermogram showed a broad endothermic drift in the baseline in the temperature range from 315 -366 °C. During the measurement the evolution of dark smoke gas was observed. The latter may be an indication of an endothermal decomposition.