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Physical & Chemical properties

Vapour pressure

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Administrative data

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Reference
Endpoint:
vapour pressure
Type of information:
other: Expert Statement
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: An expert statement based on all available literature data
Qualifier:
no guideline required
Principles of method if other than guideline:
expert statement
GLP compliance:
no
Type of method:
other: An expert statement based on all available literature data
Key result
Temp.:
25.2 °C
Vapour pressure:
3.86 Pa

EXPERT STATEMENT

The vapor pressure (VP) of the test substance was determined by Verevkin (1999) using a method similar to the gas saturation method described in OECD 104. Verevkin observed the test substance VP of 3.86 Pa at 25.2°C.

The VP of the test substance was also determined by Terres et al. (1955) over a different temperature range, by the dynamic (boiling point) method as described in OECD 104 (Terres’ results were also reported in a reference text by Boublik (1984)). The VP results of Terres and Verevkin are mutually consistent, which is relevant in establishing the validity of these data sets. The reported VP data were considered to have a Klimisch code of 2, indicating that they were “well documented and scientifically acceptable” (Klimisch et al.,1987).

Temperature

Vapor Pressure

°C

1/°C

Pa

log(Pa)

Verevkin (1999)

20.1

0.0499

2.15E+00

0.33

25.2

0.0398

3.86E+00

0.59

30.2

0.0332

6.63E+00

0.82

35.3

0.0284

1.08E+01

1.04

40.3

0.0248

1.92E+01

1.28

45.4

0.0221

3.09E+01

1.49

50.2

0.0199

4.83E+01

1.68

55.2

0.0181

7.78E+01

1.89

60.4

0.0166

1.20E+02

2.08

64.4

0.0155

1.78E+02

2.25

67.6

0.0148

2.36E+02

2.37

Terres et al. (1955)

94

0.0106

1.33E+03

3.12

115

0.0087

3.33E+03

3.52

132

0.0076

6.67E+03

3.82

143

0.0070

1.00E+04

4.00

156

0.0064

1.33E+04

4.12

163

0.0061

2.00E+04

4.30

172

0.0058

2.67E+04

4.43

179

0.0056

3.33E+04

4.52

185

0.0054

4.00E+04

4.60

188

0.0053

4.33E+04

4.64

190

0.0053

4.67E+04

4.67

196

0.0051

5.33E+04

4.73

200

0.0050

6.00E+04

4.78

 

REFERENCES

Boublik, T., Fried, V., and Hala, E. (1984). The Vapour Pressures of Pure Substances, 2nd ed., Elsevier, New York, NY.

Klimisch, H. J., Andreae, M., and Tillmann, U. (1987). A systematic approach for evaluating the quality of experimental toxicological and ecotoxicological data. Reg. Toxicol. Pharmacol. 28, 1-5.

OECD Guidelines for the testing of chemicals. (1993). Organization for Economic Cooperation and Development, Paris, France. vol.1.

Terres, E., Gebert, F., Hulsemann, H., Petereit, H., Toepsch, H., and Ruppert, W. (1955). Phenol components of tars. IV. Vapor pressure of various phenols. Brennstoff-Chem. 36, 272-4.

Verevkin, S. P. (1999). Thermochemistry of phenols: buttress effects in sterically hindered phenols. Journal of Chemical Thermodynamics 31(11), 1397-1416.

Conclusions:
The reported vapor pressure of the test substance is 3.86 Pa at 25.2 °C.

Description of key information

Key value for chemical safety assessment

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

Additional information