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Administrative data

Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Study period:
01 March 2017 - 04 May 2017
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2018
Report date:
2018

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to guideline
Guideline:
EU Method A.4 (Vapour Pressure)
Version / remarks:
2009
Deviations:
no
Qualifier:
according to guideline
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Version / remarks:
2006
Deviations:
no
Qualifier:
according to guideline
Guideline:
EPA OPPTS 830.7950 (Vapor Pressure)
Version / remarks:
1996
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
effusion method: isothermal thermogravimetry

Test material

1
Reference substance name:
Reaction products of Resin acids and Rosin acids, sodium salts and barium chloride
Molecular formula:
not applicable
IUPAC Name:
Reaction products of Resin acids and Rosin acids, sodium salts and barium chloride
Test material form:
solid: particulate/powder
Details on test material:
- Appearance: Light tan powder
- Storage conditions: At room temperature
Specific details on test material used for the study:
Decomposition temp.: 125°C

Results and discussion

Vapour pressureopen allclose all
Key result
Temp.:
20 °C
Vapour pressure:
< 0.036 Pa
Key result
Temp.:
25 °C
Vapour pressure:
< 0.049 Pa

Any other information on results incl. tables

Table: Results of the isothermal TGA analysis (test item)

Temperature
[°C]

Weight loss
[µg/min]

νT
[g/cm2/h]

logνT

logPT

PT
[Pa]

 

 

 

 

 

 

100

2.39004

2.85x10-4

-3.54

0.20

1.6

 

2.64743

3.16x10-4

-3.50

0.26

1.8

 

 

 

 

 

 

110

2.45779

2.93x10-4

-3.53

 0.22(1)

1.7

 

3.19746

3.82x10-4

-3.42

0.37

2.4

 

 

 

 

 

 

120

3.94025

4.70x10-4

-3.33

0.49

3.1

 

4.39376

5.24x10-4

-3.28

0.56

3.6

 

 

 

 

 

 

130

5.37886

6.42x10-4

-3.19

0.67

4.7

 

5.60103

6.69x10-4

-3.17

0.70

5.0

 

 

 

 

 

 

(1) Not used for calculation (outlier).

Applicant's summary and conclusion

Conclusions:
The vapour pressure of the substance at 20°C was determined to be <3.6E-2 Pa.
The vapour pressure of the substance at 25°C was determined to be <4.9E-2 Pa.
Executive summary:

The vapour pressure of the substance was determined using the isothermal thermogravimetric effusion method in a GLP study according to EC A.4, OECD 104 and OPPTS 830.7950.

The constants specific for the experimental arrangement were determined using a set of 5 reference compounds. A vapour pressure curve for the test item was constructed from duplicate measurements at 100°C, 11 0°C, 120°C and 130°C. The vapour pressure of the substance at 20°C and 25°C was determined by extrapolation to be <3.6E-2 Pa and <4.9E-2 Pa, resp.