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Physical & Chemical properties

Vapour pressure

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Reference
Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
study well documented, meets generally accepted scientific principles, acceptable for assessment
Principles of method if other than guideline:
according to a dynamic method (Roeck)
GLP compliance:
no
Type of method:
dynamic method
Temp.:
20 °C
Vapour pressure:
0.014 Pa
Temp.:
40 °C
Vapour pressure:
0.17 Pa
Temp.:
60 °C
Vapour pressure:
1.4 Pa

The vapour pressure at temperatures of 20, 40 and 60 °C was calculated.

The vapour pressure of diphenyl carbonate was determined according to a dynamic method (Roeck) for a range of temperatures between 161 °C and 312 °C. The results were correlated according to Antoine Constants' Law. The following equation was obtained:
log (P)= 7.303457-2044.046/(T+163,156) where P is given in hPa and T in °C.

Conclusions:
The vapour pressure of diphenyl carbonate is:
0.014 Pa at 20 °C
0.17 Pa at 40 °C
1.40 Pa at 60 °C
Executive summary:

The vapour pressure of diphenyl carbonate is:

0.014 Pa at 20 °C

0.17 Pa at 40 °C

1.40 Pa at 60 °C

Description of key information

The vapour pressure of diphenyl carbonate was determined to be 0.014 Pa at 20 °C, Roeck method, Bayer (1998)

Key value for chemical safety assessment

Vapour pressure:
0.014 Pa
at the temperature of:
20 °C

Additional information

There is one key study available investigating the vapour pressure of diphenyl carbonate (Bayer, 1998). The study was assigned a reliability score of 2 in line with the criteria of Klimisch et al. (1997).

The vapour pressure of diphenyl carbonate was determined according to a dynamic method (Roeck) for a range of temperatures between 161 °C and 312 °C. The results were correlated according to Antoine Constants' Law and the vapour pressure calculated at temperatures of 20, 40 and 60 °C.

The vapour pressure was determined to be 0.014 Pa at 20 °C, 0.17 Pa at 40 °C and 1.40 Pa at 60 °C. According to the standardised guidelines, vapour pressure is measured at 25 °C; the value at 20 °C has therefore been selected as key due to being the value closest to environmentally relevant conditions.