Registration Dossier

Diss Factsheets

Administrative data

Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: see 'Remark'
Remarks:
The data comes from a report of NATIONAL INDUSTRIAL CHEMICALS NOTIFICATION AND ASSESSMENT SCHEME (NICNAS), which is administered by the National Occupational Health and Safety Commission (NOHSC) of Australian Commission. Also the physico-chemical properties were determined using OECD test methods.

Data source

Reference
Reference Type:
review article or handbook
Title:
Phosphoric acid, (1-methylethylidene) di-4,1-phenylene tetraphenyl ester (Fyrolflex BDP)
Author:
National Occupational Health and Safety Commission (Australia)
Year:
2000
Bibliographic source:
In:NATIONAL INDUSTRIAL CHEMICALS NOTIFICATION AND ASSESSMENT SCHEME

Materials and methods

Test guideline
Qualifier:
equivalent or similar to guideline
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Principles of method if other than guideline:
no data
GLP compliance:
not specified
Type of method:
other: using a balance system

Test material

Constituent 1
Chemical structure
Reference substance name:
-
EC Number:
425-220-8
EC Name:
-
Cas Number:
5945-33-5
Molecular formula:
C39H34O8P2
IUPAC Name:
(1-methylethylidene)di-4,1-phenylenetetraphenyl diphosphate

Results and discussion

Vapour pressureopen allclose all
Temp.:
ca. 25 °C
Vapour pressure:
< 0.001 Pa
Remarks on result:
other: estimated
Temp.:
ca. 50 °C
Vapour pressure:
ca. 0.077 kPa
Remarks on result:
other: calculated

Applicant's summary and conclusion

Executive summary:

There was a good deal of scatter in the data, and no definitive value for the vapour pressure at 25°C could be calculated.

However, it was estimated that the vapour pressure at this temperature was around 1.12 x 10-6kPa. It should be noted that the presence of 1-3% of triphenyl phosphate, and a small quantity of residual phenol, both of which could be expected to be appreciably more volatile than the resins, which may contributed to the scatter in the data, and to the resulting estimated vapour pressure.

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