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Physical & Chemical properties

Vapour pressure

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Administrative data

Link to relevant study record(s)

Reference
Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Study period:
14-Sept-2017 to 11-Nov-2017
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Remarks:
The study was conducted in accordance with international guidelines and in accordance with GLP. All relevant validity criteria were met.
Qualifier:
according to guideline
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Version / remarks:
23-Mar-2006
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method A.4 (Vapour Pressure)
Version / remarks:
24-Aug-2009
Deviations:
no
Qualifier:
according to guideline
Guideline:
EPA OPPTS 830.7950 (Vapor Pressure)
Version / remarks:
Aug-1996
Deviations:
no
Principles of method if other than guideline:
- Principle of test: N/A
- Short description of test conditions: N/A
- Parameters analysed / observed: N/A
GLP compliance:
yes
Type of method:
effusion method: isothermal thermogravimetry
Key result
Test no.:
#1
Temp.:
20 °C
Vapour pressure:
0.005 Pa
Key result
Test no.:
#1
Temp.:
25 °C
Vapour pressure:
0.01 Pa

Results of the isothermal TGA analysis

Temperature
[°C]

Weight loss
[µg/min]

νT
[g/cm2/h]

logνT

logPT

PT
[Pa]

 

 

 

 

 

 

60

1.15031

1.37 x 10-4

-3.86

-0.23

0.60

 

1.04771

1.25 x 10-4

-3.90

-0.28

0.53

 

 

 

 

 

 

70

2.15019

2.57 x 10-4

-3.59

0.14

1.4

 

1.94130

2.32 x 10-4

-3.64

0.08

1.2

 

 

 

 

 

 

80

4.33407

5.17 x 10-4

-3.29

0.55

3.5

 

4.12090

4.92 x 10-4

-3.31

0.52

3.3

 

 

 

 

 

 

90

8.91724

1.06 x 10-3

-2.97

0.97

9.3

 

8.48720

1.01 x 10-3

-2.99

0.94

8.7

 

Vapour pressure of the test item

Temperature
[°C]

logPT

PT
[Pa]

PT
[mm Hg]

 

 

 

 

20

-2.28

5.2 x 10-3

3.9 x 10-5

 

 

 

 

25

-2.00

9.9 x 10-3

7.4 x 10-5
Conclusions:
The isothermal TGA effusion method was applied for the determination of the vapour pressure of Reaction products of 3-methyl-5-[(1S,4aS,8aS)-5,5,8a-trimethyl-2- methylenedecahydro-1-naphthalenyl]-1-penten-3-ol, cyclized.

The vapour pressure of the test item at 20°C and 25°C were 5.2 x 10^-3 and 9.9 x 10^-3, respectively.
Executive summary:

The isothermal TGA effusion method was applied for the determination of the vapour pressure of Reaction products of 3-methyl-5-[(1S,4aS,8aS)-5,5,8a-trimethyl-2- methylenedecahydro-1-naphthalenyl]-1-penten-3-ol, cyclized.

 

The temperature ran from 30 to 130 °C and the loss in wieght of the test item was measured continuously as a function of time. Linear regression analysis of the variables was conducted to estimate vapour pressure at 20 and 25 °C.

 

The vapour pressure of the test item at 20 °C and 25 °C were 5.2 x 10^-3 and 9.9 x 10^-3, respectively.

Description of key information

Vapour pressure is 9.9 x 10^-3 Pa (at 25 °C), OECD 104 (also see: EC A.4 and OPPTS 830.7950, Anon. (2017).

Key value for chemical safety assessment

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

Additional information