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The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Administrative data

Endpoint:
vapour pressure
Type of information:
experimental study
Adequacy of study:
key study
Study period:
13 March 2018 - 27 March 2018
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:
2016
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
Type of method:
effusion method: isothermal thermogravimetry

Test material

Constituent 1
Chemical structure
Reference substance name:
Extract obtained from the shell of Theobroma cacao (Malvaceae) by co-extraction with ethanol and propylene glycol
EC Number:
948-055-8
Molecular formula:
not applicable as it is a UVCB
IUPAC Name:
Extract obtained from the shell of Theobroma cacao (Malvaceae) by co-extraction with ethanol and propylene glycol
Test material form:
liquid: viscous
Details on test material:
- Physical appearance: dark brown to black viscous liquid
- Storage conditions: in refrigerator (2-8°C) protected from light

Results and discussion

Vapour pressureopen allclose all
Key result
Temp.:
20 °C
Vapour pressure:
9.8 Pa
Key result
Temp.:
25 °C
Vapour pressure:
16 Pa

Any other information on results incl. tables

Table: Results of the Vapour pressure Isothermal TGA Analysis

Temperature
[°C]

Weight loss
[µg/min]

νT
[g/cm2/h]

logνT

logPT

PT
[Pa]

45

32.0932

3.83E-3

-2.42

2.04

1.1E2

 

30.9307

3.69E-3

-2.43

2.02

1.1E2

50

43.2338

5.16E-3

-2.29

2.21

1.6E2

 

48.6273

5.80E-3

-2.24

2.27

1.9E2

55

67.6087

8.07E-3

-2.09

2.46

2.9E2

 

64.5980

7.71E-3

-2.11

2.43

2.7E2

60

84.6368

1.01E-2

-2.00

2.58

3.8E2

 

84.7215

1.01E-2

-2.00

2.58

3.8E2

Applicant's summary and conclusion

Conclusions:
The vapour pressure of the substance at 20°C was determined to be 9.8 Pa.
The vapour pressure of the substance at 25°C was determined to be 16 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 45°C, 50°C, 55°C and 60°C. The vapour pressure of the substance at 20°C and 25°C was calculated by extrapolation to be 9.8 Pa and 16 Pa, resp.