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Diss Factsheets

Physical & Chemical properties

Vapour pressure

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Reference
Endpoint:
vapour pressure
Type of information:
calculation (if not (Q)SAR)
Adequacy of study:
supporting study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
data from handbook or collection of data
Justification for type of information:
Data is from handbook
Qualifier:
according to guideline
Guideline:
other: as per mentioned below
Principles of method if other than guideline:
The vapor pressure of the test chemical was calculated using the Antoine equation.
GLP compliance:
not specified
Type of method:
other: no data
Key result
Test no.:
#1
Temp.:
294.1 °C
Vapour pressure:
133.3 Pa
Remarks on result:
other: Tmax
Key result
Test no.:
#2
Temp.:
69.92 °C
Vapour pressure:
399 977 Pa
Remarks on result:
other: Tmin

Antoine equation:

Log10P = A-B / (T + C)

 

Where,

P = vapour pressure (mmHg)

A, B and C = Antoine coefficients

T = temperature in deg C

 

Table: Antoine equation constant for the test chemical.

 

Substance

A

B

C

Tmin

Tmax

Test chemical

7.53363

1970.2810

191.610

69.92

294.10

 

Conclusions:
The vapor pressure of test chemical was considered to be 133.30 Pa at Tmax = 294.10°C and 399977.0 Pa at Tmin = 69.92°C
Executive summary:

The vapor pressure of test chemical was considered to be 133.30 Pa at Tmax = 294.10°C and 399977.0 Pa at Tmin = 69.92°C

Description of key information

Based on the available data from peer reviewed journal and authoritative databases, the vapour pressure of the test chemical was estimated using the Modified Grain method (Mean of Antoine and Modified Grain methods) of MPBPVP v1.43 of EPI suite. The vapour pressure of the test chemical was estimated to be 12.1 Pa at 25 deg C.

Key value for chemical safety assessment

Vapour pressure:
12.1 Pa
at the temperature of:
25 °C

Additional information

Based on the available data in a key study from peer reviewed journal and authoritative databases, the vapour pressure of the test chemical was estimated using the Modified Grain method (Mean of Antoine and Modified Grain methods) of MPBPVP v1.43 of EPI suite. The vapour pressure of the test chemical was estimated to be 12.1 Pa at25 deg C.

In a supporting study from handbook, the vapour pressure of test chemical was calculated using the Antoine equation and the vapour pressure value was evaluated to be 133.30 Pa at Tmax = 294.10°C and 399977.0 Pa at Tmin = 69.92°C.

Another supporting study from secondary source indicates that the estimatedvapour pressure of the test chemical at 25 deg C was 12.93 Pa.