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Vapour pressure

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Reference
Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2005-07-26 - 2006-01-23
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Guideline study, GLP
Qualifier:
according to
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Deviations:
not specified
Qualifier:
according to
Guideline:
EU Method A.4 (Vapour Pressure)
Deviations:
not specified
GLP compliance:
yes
Type of method:
effusion method: vapour pressure balance
Temp.:
20 °C
Vapour pressure:
0.32 Pa
Remarks on result:
other: The vapour pressure of the test item at 20 DC was interpolated graphically in the log p vs 1/T plot.

Temperature

[°C]

Inverse temperature

X 1000

[K E-1]

Vapour pressure 1)

[hPa]

16

3.458

0.00178

20

3.411

0.00321

25

3.354

0.00585

30

3.299

0.00835

35

3.245

0.01389

Calculated pressure

20

3.411

0.00321

 

1) mean value of triplicate measurements (at 35 °C duplicate measurements only)

A preliminary test showed that a sample of the test item had already vaporized before measurement when degassing the sample at 60 DC. Thus the sample was degassed at 30 DC but for a longer period and the measurements started already at 16 DC.

The vapour pressure of the test item at 20 DC was interpolated graphically in the log pvs 1/Tplot. It corresponds to the measured value at 20 DC of 3.2 • 10-3hPa.

Conclusions:
In a valid guideline study acc. OECD 104 with vapour pressure balance method the vapour pressure of Butyldiglycol dimethacrylate was 0.32 Pa at 20 °C.
Executive summary:

In a valid guideline study acc. OECD 104 with vapour pressure balance method the vapour pressure of Butyldiglycol dimethacrylate was 0.32 Pa at 20 °C.

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Description of key information

In a valid guideline study acc. OECD 104 with vapour pressure balance method the vapour pressure of  Butyldiglycol methacrylate  was 0.32 Pa
at 20 °C.

Key value for chemical safety assessment

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

Additional information