Registration Dossier

Administrative data

Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Study period:
Experimental period was 27 November 2017 to 29 November 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:
OECD Guideline 104 (Vapour Pressure Curve)
Deviations:
no
Qualifier:
according to
Guideline:
EU Method A.4 (Vapour Pressure)
Deviations:
no
Qualifier:
according to
Guideline:
EPA OPPTS 830.7950 (Vapor Pressure)
Deviations:
no
Type of method:
effusion method: isothermal thermogravimetry

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
solid: particulate/powder
Specific details on test material used for the study:
Batch: 16-09-01 (taken from label)
Purity/Composition: 100%
Test item storage: At room temperature
Stable under storage conditions until: 05 September 2019 (expiry date)

Results and discussion

Vapour pressureopen allclose all
Key result
Test no.:
#1
Temp.:
ca. 20 °C
Vapour pressure:
< 8.4 other: x10-7 Pa
Key result
Test no.:
#2
Temp.:
ca. 25 °C
Vapour pressure:
< 6.6 other: x10-7 Pa

Any other information on results incl. tables

A log pversus1/T curve for the test itemin the range of 170°C and 200°C could not be determined. The coefficient of correlation (r) was < 0.99 (data is archived in the raw data).

The weight losses were compared with the results of chrysene at the same temperatures. During both analyses the weight loss of the test item at 160°C and 170°C were lower than the weight loss of the reference substance at the same temperatures. According to this the vapour pressure of the test item was determined to be lower than that ofchrysene.

 

20°C

25°C

 

[Pa]

[mm Hg]

[Pa]

[mm Hg]

Test item

< 8.4x10 -7

< 6.3x10 -9

< 6.6x10-7

< 4.9x10-9

Applicant's summary and conclusion

Conclusions:
The isothermal TGA effusion method was applied for the determination of the vapour pressure of NBTRI.
The vapour pressure of the test item at 20°C (293K) and 25°C (298K) was:

< 8.4 x 10-7 Pa 20°C (293K)
< 6.6 x 10-7 Pa 25°C (298K)
Executive summary:

The isothermal TGA effusion method was applied for the determination of the vapour pressure of NBTRI.

The vapour pressure of the test item at 20°C (293K) and 25°C (298K) was:

 

20°C

25°C

[Pa]

[mm Hg]

[Pa]

[mm Hg]

Test item

< 8.4x10-7

< 6.3x10-9

< 6.6x10-7

< 4.9x10-9