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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

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:
2019
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2019

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to guideline
Guideline:
EU Method A.4 (Vapour Pressure)
Version / remarks:
March 04, 2016
Deviations:
no
Qualifier:
according to guideline
Guideline:
OECD Guideline 104 (Vapour Pressure Curve)
Version / remarks:
March 23, 2006
Deviations:
no
Qualifier:
according to guideline
Guideline:
EPA OPPTS 830.7950 (Vapor Pressure)
Version / remarks:
August 1996
Deviations:
no
GLP compliance:
yes
Type of method:
effusion method: isothermal thermogravimetry

Test material

Constituent 1
Chemical structure
Reference substance name:
Sodium diisopropylnaphthalenesulphonate
EC Number:
215-343-3
EC Name:
Sodium diisopropylnaphthalenesulphonate
Cas Number:
1322-93-6
Molecular formula:
C16H20O3S.Na
IUPAC Name:
sodium diisopropylnaphthalene-sulfonate
Test material form:
solid: particulate/powder
Details on test material:
white to off-white lumps

Results and discussion

Vapour pressureopen allclose all
Key result
Test no.:
#1
Temp.:
20 °C
Vapour pressure:
< 0 Pa
Test no.:
#1
Temp.:
25 °C
Vapour pressure:
< 0 Pa

Any other information on results incl. tables

Weight loss was observed from the start of the experiment, caused by evaporation of volatile components (i.e. impurities).Starting from 220°C non-linear weight losses were observed due to reaction and/or decomposition of the test item (results are archived in the raw data).

 

In the range of 180°C - 210°C alog p versus 1/T curve for the test itemcould not be constructed due to the fact that the coefficient of correlation (r) was < 0.99 (data is archived in the raw data).

 

Since no accurate vapour pressure could be calculated from the obtained results, the weight losses of the test item were compared with the results of the most similar reference substance, benzo(ghi)perylene, at the same temperatures. Since the weight loss of the test item was lower than the weight loss of the reference compound, the vapour pressure of the test item is considered to be below the vapour pressure ofbenzo(ghi)perylene.

Applicant's summary and conclusion

Conclusions:
The isothermal TGA effusion method was applied for the determination of the vapour pressure of CH04207.
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 < 1.3 * 10^-8 < 1.0 * 10^-10 < 5.5 * 10^-8 < 4.1 * 10^-10