2-tert-butyl-1,4-dimethoxybenzene

Surface tension

Link to relevant study record(s)

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