Reaction mass of (1RS)-1-[(1RS)-3,3-dimethylcyclohexyl]ethyl [(2RS,3RS)-3-ethyloxiran-2-yl]acetate and (1RS)-1-[(1RS)-3,3-dimethylcyclohexyl]ethyl [(2SR,3SR)-3-ethyloxiran-2-yl]acetate and (1RS)-1-[(1SR)-3,3-dimethylcyclohexyl]ethyl [(2RS,3RS)-3-ethyloxiran-2-yl]acetate and (1RS)-1-[(1SR)-3,3-dimethylcyclohexyl]ethyl [(2SR,3SR)-3-ethyloxiran-2-yl]acetate

Surface tension

Link to relevant study record(s)

Reference

Endpoint:

surface tension

Type of information:

experimental study

Adequacy of study:

key study

Study period:

13-05-2014 to 14-05-2014

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: Guideline study performed under GLP. All relevant validity criteria were met.

Qualifier:

according to guideline

Guideline:

OECD Guideline 115 (Surface Tension of Aqueous Solutions)

Deviations:

no

Qualifier:

according to guideline

Guideline:

EU Method A.5 (Surface Tension)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Remarks:

inspected: June 2013; signature: June 2013

Type of method:

OECD harmonised ring method

Surface tension:

50.48 mN/m

Temp.:

20 °C

Conc.:

90 other: % saturation

Remarks on result:

other: surface tension of a 90 % saturated aqueous solution of the test item at 20 °C is 50.48 mN/m (standard deviation of 0.03 mN/m) with Harkins-Jordan correction

Determination of the Density

The density of the 90 % saturated aqueous solution of the test item in double distilled water was determined in a preliminary measurement to be 0.999 g/cm3 (20.0 °C).

 

Temperature

The temperature range of the test solution during the whole measurements was 19.9 - 20.0 °C (for the last 10 measurements see Table 1).

 

 Table 1. Surface Tension of the test item

Measurement (1)	Time / min (2)	Surface Tension / mN/m (3)	Temperature / °C
1	23.1	50.40	19.9
2	23.8	50.47	19.9
3	24.5	50.50	19.9
4	25.2	50.50	19.9
5	25.9	50.51	19.9
6	26.6	50.47	19.9
7	27.3	50.47	19.9
8	28.0	50.50	20.0
9	28.7	50.51	20.0
10	29.4	50.47	20.0
Mean	-	50.48	19.93
S.D.		0.03	0.05

SD = standard deviation

(1) of the last 10 measurements

(2) time from transfer of test solution into test vessel until end of each measurement

(3) Measurements were automatically subjected to Harkins & Jordan correction

See reference: Harkins, W.D. and Jordan, H.F. (1930). J. Amer. Chem. Soc., 52, 1751

Conclusions:

The surface tension of a 90% saturated aqueous solution of test item has been determined to be 50.48 mN/m at 20.0 ± 0.5 °C. The test item is considered to be surface-active.

Executive summary:

The surface tension was determined using the ring method of OECD TG 115 and EU Method A.5 under GLP. The surface tension of a 90% saturated aqueous solution of the test item has been determined to be 50.48 mN/m at 20.0 ± 0.5 °C. Substances showing a surface tension lower than 60 mN/m under the conditions of this method, should be regarded as being surface active.

Description of key information

Surface Tension: 50.48 mN/m at 20.0 ± 0.5 °C, OECD TG 115, 2014

Key value for chemical safety assessment

Surface tension:

50.48

Additional information

Key study : OECD TG 115, 2014 : The surface tension was determined using the ring method of OECD TG 115 and EU Method A.5 under GLP. The surface tension of a 90% saturated aqueous solution of the test item has been determined to be 50.48 mN/m at 20.0 ± 0.5 °C. Substances showing a surface tension lower than 60 mN/m under the conditions of this method, should be regarded as being surface active.