Registration Dossier

Administrative data

Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2017
Report Date:
2018

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Qualifier:
according to
Guideline:
EU Method A.4 (Vapour Pressure)
Qualifier:
according to
Guideline:
EPA OPPTS 830.7950 (Vapor Pressure)
GLP compliance:
yes
Type of method:
effusion method: isothermal thermogravimetry

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
solid: particulate/powder

Results and discussion

Vapour pressureopen allclose all
Test no.:
#1
Temp.:
20 °C
Vapour pressure:
12 Pa
Test no.:
#2
Temp.:
25 °C
Vapour pressure:
26 Pa

Any other information on results incl. tables

Table 1: Results of the Vapour pressure Isothermal TGA Analysis

Temperature
[°C]

Weight loss
[µg/min]

νT
[g/cm2/h]

logνT

logPT

PT
[Pa]

30

20.0912

2.40´10-3

-2.62

1.78

61

 

15.6240

1.86´10-3

-2.73

1.64

44

40

59.9978

7.16´10-3

-2.14

2.39

250

 

49.8077

5.95´10-3

-2.23

2.29

190

50

168.329

2.01´10-2

-1.70

2.96

920

 

144.428

1.72´10-2

-1.76

2.88

760

60

383.315

4.58´10-2

-1.34

3.42

2600

 

355.919

4.25´10-2

-1.37

3.38

2400

 

Table 2 : Vapour Pressure of the Test Item

Temperature
[°C]

logPT

PT
[Pa]

PT
[mm Hg]

20

1.09

12

9.1´10-2

Applicant's summary and conclusion

Conclusions:
The vapour pressure of mercaptamine at 20°C (293K) and 25°C (298K) was 12 and 26 Pa, respectively.