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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:
8 October 2014 to 8 December 2014
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Deviations:
no
Qualifier:
according to
Guideline:
EU Method A.4 (Vapour Pressure)
Deviations:
no
GLP compliance:
no
Type of method:
dynamic method
Temp.:
20 °C
Vapour pressure:
3.7 Pa
Temp.:
25 °C
Vapour pressure:
5.4 Pa
Temp.:
50 °C
Vapour pressure:
29.7 Pa

The measured vapour pressure values between 117.5 and 210 °C are shown in the table below:

Table 1. Meaured vapour pressure values

No.

Temperature

ºC

Vapour Pressure

hPa

Remark

1

117.5

9.9

measured up

2

135.5

19.9

measured up

3

145.1

29.8

measured up

4

152.9

39.9

measured up

5

159.0

49.7

measured up

6

179.3

98.6

measured up

7

201.6

198.8

measured up

8

210.0

248.7

measured down

9

192.3

149.4

measured down

10

172.5

79.4

measured down

11

137.7

24.9

measured down

 

No thermal effects were observed up to 300 °C.

Conclusions:
The vapour pressure of 1,3-dimethyl-3-phenylbutyl acetate was determined to be 3.7 Pa at 20 °C, 5.4 Pa at 25 °C and 29.7 Pa at 50 °C using the vapour-liquid equilibrium (VLE) method (Dynamic method).
Executive summary:

The vapour pressure of 1,3-dimethyl-3-phenylbutyl acetate was determined to be 3.7 Pa at 20 °C, 5.4 Pa at 25 °C and 29.7 Pa at 50 °C using the vapour-liquid equilibrium (VLE) method (Dynamic method). The vapour pressure of the test item was determined in a vapour/liquid equilibrium apparatus following OECD guideline 104 (2014). The study is considered reliable and relevant for use for this endpoint.

Description of key information

The vapour pressure of 1,3-dimethyl-3-phenylbutyl acetate was determined to be 3.7 Pa at 20 °C, 5.4 Pa at 25 °C and 29.7 Pa at 50 °C. 

Key value for chemical safety assessment

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

Additional information

The vapour pressure of the test item was determined in a vapour/liquid equilibrium apparatus following OECD guideline 104 (2014). The study is considered reliable and relevant for use for this endpoint.