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Surface tension

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Reference
Endpoint:
surface tension
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2019-03-20 to 2019-03-21
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
OECD Guideline 115 (Surface Tension of Aqueous Solutions)
Version / remarks:
Organization for Economic Co-operation and Development (OECD) Guidelines for Testing of Chemicals, Guideline No.115, adopted 27 July 1995
Qualifier:
according to guideline
Guideline:
EU Method A.5 (Surface Tension)
Version / remarks:
Commission Regulation (EC) No 440/2008 of 30 May 2008 Method A.5, Official Journal of the European Union L 142 of 31 May 2008
GLP compliance:
yes (incl. QA statement)
Type of method:
ring method
Specific details on test material used for the study:
Name: 2-tert-butyl-1,4-dimethoxybenzene
Other name: Vetimoss
CAS number: 21112-37-8
Batch/Lot number: A180118C
Description: Clear, pale yellow liquid
Purity: 99.78%
Expiry date: 06 June 2019
Key result
Surface tension:
69.5 mN/m
Temp.:
20 °C
Conc.:
0.891 g/L

The measured and corrected surface tension values of the test solution

Measurement

Age of test solution

Temperature

Measured Surface tension

RSD%

Mean

RSD%

Corrected surface tension

min

C

mN/m

%

mN/m

%

mN/m

Mean (mN/m)

1

345

19.82

69.30

0.048

68.48

1.17

69.88

69.06

69.5

2

358

19.59

68.45

0.074

69.02

3

369

19.75

67.70

0.092

68.27

4

1757

20.64

69.19

0.016

69.14

0.09

70.04

69.99

5

1770

20.60

69.07

0.091

69.92

6

1792

20.59

69.17

0.039

70.02

 

RSD%

1.04%

Measurements 1-3 were performed on the first day, measurements 4-6 were performed on the second day.

RSD%: relative standard deviation

Conclusions:
The surface tension value was found to be 69.5 mN/m at 20°C ± 0.7°C. As the surface tension value of the aqueous solution of the test item (at 90% of saturated level) was greater than 60 mN/m, 2-tert-butyl-1,4-dimethoxybenzene is classified as not being a surface active substance.
Executive summary:

The surface tension of Vetimoss was determined using the ring method and according to OECD TG 115. The surface tension value was found to be 69.5 mN/m at 20°C ± 0.7°C. As the surface tension value of the aqueous solution of the test item (at 90% of saturated level) was greater than 60 mN/m, 2-tert-butyl-1,4-dimethoxybenzene is classified as not being a surface active substance.

Description of key information

The surface tension of Vetimoss was determined using the ring method and according to OECD TG 115.The surface tension value was found to be 69.5 mN/m at 20°C ± 0.7°C. As the surface tension value of the aqueous solution of the test item (at 90% of saturated level) was greater than 60 mN/m, 2-tert-butyl-1,4-dimethoxybenzene is classified as not being a surface active substance.

Key value for chemical safety assessment

Surface tension:
69.5

Additional information