Dibenzo[d,f][1,3,2]dioxaphosphepin, 6,6'-[[3,3',5,5'-tetrakis(1,1-dimethylethyl)[1,1'-biphenyl]-2,2'-diyl]bis(oxy)]bis-

Boiling point

Administrative data

Endpoint:

boiling point

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: GLP guideline study (OECD, EC, EPA, FDA, etc.)

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2008

Report date:

2008

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

EU Method A.2 (Boiling Temperature)

Deviations:

no

Principles of method if other than guideline:

Visual assessment. Boiling point determined using a BUCHI B-545 Melting point/Boiling point apparatus by visual assessment. The apparatus uses melting point standards for calibration.

GLP compliance:

yes

Type of method:

other: Visual assessment, comparable to the principle according to Siwoloboff and the photocell method.

Test material

Test material information

Constituent 1

Reference substance name:

-

EC Number:

482-400-9

EC Name:

-

Cas Number:

138776-88-2

Molecular formula:

C52H56O6P2

IUPAC Name:

9-[(3,3',5,5'-tetra-tert-butyl-2'-{8,10-dioxa-9-phosphatricyclo[9.4.0.0²,⁷]pentadeca-1(11),2(7),3,5,12,14-hexaen-9-yloxy}-[1,1'-biphenyl]-2-yl)oxy]-8,10-dioxa-9-phosphatricyclo[9.4.0.0²,⁷]pentadeca-1(11),2,4,6,12,14-hexaene

Results and discussion

Boiling point

Boiling pt.:

378.6 °C

Atm. press.:

1.013 hPa

Any other information on results incl. tables

Test 1: 378.7 °C

Test 2: 378.5 °C

The changes in colouration of the test substance with increasing temperature indicated that the test substance may have decomposed before the boiling point was reached. However a reproducible end point was reached and this value therefore will be quoted.

Applicant's summary and conclusion

Executive summary:

The test was carried out on one sample in duplicate.

The test was carried out with a BUCHI B-545 Melting point/Boiling point apparatus by visual assessment. This method is believed to be comparable to the principle according to Siwoloboff and the photocell method.

The instrument was calibrated with a cafeine standard.

Boiling point (mean): 378.6 °C

The changes in colouration of the test substance with increasing temperature indicated that the test substance may have decomposed before the boiling point was reached. However a reproducible end point was reached and this value therefore will be quoted.