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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:
guideline study with acceptable restrictions
Qualifier:
according to guideline
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
GLP compliance:
no
Type of method:
dynamic method
Key result
Temp.:
20 °C
Vapour pressure:
1.61 Pa
Key result
Temp.:
25 °C
Vapour pressure:
2.38 Pa
Key result
Temp.:
50 °C
Vapour pressure:
13.99 Pa
Key result
Transition / decomposition:
no
Remarks:
reaction or decomposition of the test item was not observed during the test

Reaction and/or decomposition of the test material was not observed during the test.

Measurement results of vapour pressure at various temperature:

 Temperature  Vapour Pressure  Condition
 ºC  K

 Pa

 mmHg

 116

 389

 533

 4

 Measured up

 136

 409

 1133

 8.5

 Measured up

 151

 424

 2066

 15.5

 Measured up

 158

 431

 2800

 21

 Measured up

 166

 439

 3600

 27

 Measured up

 174

 447

 4933

 37

 Measured up

 180

 453

 6399

 48

 Measured up

 172  445  4533  34  Measured down
 160  433  3066  23  Measured down
 155  428  2533  19  Measured down
 145  418  1600  12  Measured down
 122  395  667  5  Measured down

Estimated vapour pressure, calculated by extrapolation of the measured vapour pressure curve:

 Temperature     Vapour Pressure   
 ºC  K  Pa  mmHg
 20  293  1.61  1.2 x 10-2
 25  298  2.38  1.8 x 10-2
 50  323  13.99  1.0 x 10-1
Conclusions:
The vapour pressures of the test item were calculated to be 1.61, 2.38 and 13.99 Pa at 20, 25 and 50°C, respectively.
Executive summary:

The vapour pressure of the test item was determined by dynamic method according to OECD TG 104. At 20, 25 and 50°C, the vapour pressures were calculated to be 1.61, 2.38, 13.99 Pa, respectively. Reaction and/or decomposition of the test item was not observed during the test. The study is reliable with restrictions, being not GLP-compliant, but having followed a standard guideline.

Description of key information

The vapour pressure of the test item at 20, 25 and 50°C was calculated to be 1.61, 2.38 and 13.99 Pa.

Key value for chemical safety assessment

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

Additional information

The vapour pressure of the test item was determined by dynamic method according to OECD TG 104. The study is a guideline, non-GLP, experimental study available as an unpublished study report and is adequate for assessment of this endpoint (2013).