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Physical & Chemical properties

Vapour pressure

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Link to relevant study record(s)

Reference
Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Study period:
October 20 2020 - October 20 2020
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Deviations:
no
GLP compliance:
yes
Type of method:
static method
Specific details on test material used for the study:
Not specified
Key result
Test no.:
#1
Temp.:
30 °C
Vapour pressure:
1.4 Pa
Key result
Test no.:
#2
Temp.:
30 °C
Vapour pressure:
1.46 Pa
Key result
Test no.:
#3
Temp.:
30 °C
Vapour pressure:
1.46 Pa
Key result
Test no.:
#4
Temp.:
35 °C
Vapour pressure:
2 Pa
Key result
Test no.:
#5
Temp.:
35 °C
Vapour pressure:
1.93 Pa
Key result
Test no.:
#6
Temp.:
35 °C
Vapour pressure:
2 Pa
Key result
Test no.:
#7
Temp.:
40 °C
Vapour pressure:
2.73 Pa
Key result
Test no.:
#8
Temp.:
40 °C
Vapour pressure:
2.66 Pa
Key result
Test no.:
#9
Temp.:
40 °C
Vapour pressure:
2.66 Pa

Measured results

Temperature (°C)

Vapour pressure

Measured value

Converted value*1

Average

 

30

10.5 mmHg

1.40 x103Pa

 

1.44 x103Pa

11.0 mmHg

1.46 x103Pa

11.0 mmHg

1.46 x103Pa

 

35

15.0 mmHg

2.00 x103Pa

 

1.97 x103Pa

14.5 mmHg

1.93 x103Pa

15.0 mmHg

2.00 x103Pa

 

40

20.5 mmHg

2.73 x103Pa

 

2.68 x103Pa

20.0 mmHg

2.66 x103Pa

20.0 mmHg

2.66 x103Pa

*1; 1mmHg = 133 Pa

The vapor pressure curve oftest item was straight line and the correlation coefficient of the regression equation was 0.998. Therefore, it is judged that the test results are valid .

Conclusions:
The vapor pressure of test item at 25°C is 1.04xl03 Pa
Executive summary:

The objective of this study was to obtain the vapour pressure of Dye-2019. The study was carried out in accordance with OECD test guideline No.104 in compliance with GLP.

The measurement method used for this assessment was the static method. The vapour pressure of the test item was performed at three temperatures, 30°C, 35°C and 40°C, assessments at each temperature were performed in triplicate. The vapour pressure for this test item was determined to be 1.04 x 103 Pa at 25°C.

Description of key information

The vapor pressure of test item at 25°C is 1.04xl03 Pa

Key value for chemical safety assessment

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

Additional information