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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
surface tension
Type of information:
experimental study
Adequacy of study:
key study
Study period:
28 December 2017 - 11 January 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.5 (Surface Tension)
Version / remarks:
2016
Deviations:
no
Qualifier:
according to guideline
Guideline:
OECD Guideline 115 (Surface Tension of Aqueous Solutions)
Version / remarks:
1995
Deviations:
no
GLP compliance:
yes
Type of method:
OECD harmonised ring method

Test material

Constituent 1
Chemical structure
Reference substance name:
19-norpregn-4-en-20-yn-3-one, 17-hydroxy-7-methyl, (7alpha, 17alpha-)
EC Number:
601-419-7
Cas Number:
1162-60-3
Molecular formula:
C21H28O2
IUPAC Name:
19-norpregn-4-en-20-yn-3-one, 17-hydroxy-7-methyl, (7alpha, 17alpha-)
Test material form:
solid: particulate/powder
Details on test material:
- Physical appearance: off-white to beige powder
- Test item storage: at room temperature

Results and discussion

Surface tension
Key result
Surface tension:
69.33 mN/m
Temp.:
20 °C
Remarks on result:
other: Conc. is 90% of test item saturation solubility in water

Any other information on results incl. tables

Table: Surface tension measurements

Measurement

Time passed after measurement start
[seconds]

Surface tension
(mN/m)

individual σ multiplied by

Harkins-Jordan corrected value

mean σ multiplied by

Harkins-Jordan corrected value

1

42.18

69.55

69.33

2

69.08

69.32

 

3

97.26

69.27

 

4

123.84

69.26

 

5

150.01

69.24

 

Applicant's summary and conclusion

Conclusions:
The surface tension of an aqueous solution of the substance at 90% of its saturation solubility in water was determined to be 69.33 mN/m (at 20°C).