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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
Study period:
from 2017-11-16 to 2017-12-05
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method A.4 (Vapour Pressure)
Deviations:
no
Qualifier:
according to guideline
Guideline:
EPA OPPTS 830.7950 (Vapor Pressure)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
effusion method: Knudsen cell
Specific details on test material used for the study:
SOURCE OF TEST MATERIAL
- Batch No. of test material: AD16081001
- Expiration date of the batch: 2019-08-09

STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material: at room temperature
- Stability under test conditions: Stable under ambient conditions
Key result
Temp.:
20 °C
Vapour pressure:
0 Pa
Temp.:
25 °C
Vapour pressure:
0 Pa

The vapour pressure was measured in the temperature range of 90 to 130 °C. For the evaluation the vapour pressure values in the range of 90 to 120 °C were used.

Stage No.

Temperature, °C

Δm/Δt, mg/min

Vapour pressure, Pa

1

90

8.7285 x 10-5

2.3609 x 10-2

2

95

1.5908 x 10-4

4.3324 x 10-2

3

100

3.0665 x 10-4

8.4076 x 10-2

4

105

6.3614 x 10-4

1.7558 x 10-1

5

110

1.3644 x 10-3

3.7908 x 10-1

6

115

3.8532 x 10-3

1.0775

7

120

5.9338 x 10-3

1.6700
Conclusions:
The vapour pressure of the test item was calculated by extrapolation of the measured vapour pressure curve for the temperatures 20 and 25 °C:
Vapour pressure at 20 °C: 1.895E-8 Pa
Vapour pressure at 25 °C: 6.337E-8 Pa
Executive summary:

A study was conducted according to OECD TG 104, Regulation (EC) No 440/2008 method A.4 and OPPTS 830.7950 to determine the vapour pressure of the test item. The vapour pressure of the test item was determined at temperatures between 90 and 130 °C using the effusion method (Knudsen cell). For the evaluation the vapour pressure values in the range of 90 to 120 °C were used. The vapour pressure of the test item was calculated by extrapolation of the measured vapour pressure curve for the temperatures 20 and 25 °C. The vapour pressure was calculated to be 1.895E-8 Pa at 20 °C and 6.337E-8 Pa at 25 °C, respectively.

Description of key information

The vapour pressure of the test item was calculated by extrapolation of the measured vapour pressure curve for the temperatures 20 and 25 °C:

Vapour pressure at 20 °C: 1.895E-8 Pa

Vapour pressure at 25 °C: 6.337E-8 Pa

Key value for chemical safety assessment

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

Additional information

A study was conducted according to OECD TG 104, Regulation (EC) No 440/2008 method A.4 and OPPTS 830.7950 to determine the vapour pressure of the test item. The vapour pressure of the test item was determined at temperatures between 90 and 130 °C using the effusion method (Knudsen cell). For the evaluation the vapour pressure values in the range of 90 to 120 °C were used. The vapour pressure of the test item was calculated by extrapolation of the measured vapour pressure curve for the temperatures 20 and 25 °C. The vapour pressure was calculated to be 1.895E-8 Pa at 20 °C and 6.337E-8 Pa at 25 °C, respectively.