Bis[(3,4-epoxycyclohexyl)methyl] adipate

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 September 2017 to 14 September 2017

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:

1995

Deviations:

no

Qualifier:

according to guideline

Guideline:

EU Method A.5 (Surface Tension)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

ring method

Key result

Surface tension:

52.7 mN/m

Temp.:

20 °C

Conc.:

90 other: % saturated solution

Table 1: Measured surface tension values

Value No.	1^stMeasurements (10 min after preparing the solution) s[mN/m]	2^ndMeasurement (20 min after preparing the solution) s[mN/m]
1	52.71	52.65
2	52.71	52.63
3	52.74	52.61
4	52.74	52.61
5	52.79	52.60
6	52.81	52.59
Mean value of the individual values	52.75 ± 0.04	52.62 ± 0.02
Total mean value	52.68 ± 0.10

The test item has a mean surface tension of 52.7 mN/m. Thus, the test item is to be regarded as surface active.

Conclusions:

Under the conditions of this study the surface tension of the test material was 52.7 mN/m, therefore the test material is to be regarded as surface active.

Executive summary:

The surface tension of the test material was investigated in accordance with the standardised guidelines OECD 115 and EU Method A.5, under GLP conditions.

Due to the low water solubility of the test material, a solution with a concentration of 1035.8 mg/L was prepared. For this purpose 100 mL double distilled water were added to 103.58 mg of the test material and stirred overnight to create an oversaturated solution. Due to the fact that the test material was not dissolved completely, the saturated solution was decanted and filtered via an HPLC filter. Subsequently 90 mL of the filtered solution were diluted to 100 mL with double distilled water to create a solution with a concentration of about 90 % of the solubility. This solution was measured twice. The temperature was adjusted and kept at 20 °C.

The measurement vessel was raised automatically until the ring was immersed below the surface of the solution. Subsequently, the table top was lowered automatically to detach the ring from the surface until the maximum force was reached. The force was read on the tensiometer. The liquid layer attached to the ring was not separated from the ring during the measurements. After completing the first measurement, measurements were repeated until a constant surface tension value was reached.

Under the conditions of this study the surface tension of the test material was 52.7 mN/m, therefore the test material is to be regarded as surface active.

Description of key information

Under the conditions of this study the surface tension of the test material was 52.7 mN/m, therefore the test material is to be regarded as surface active.

Key value for chemical safety assessment

Surface tension:

52.7

Additional information

The surface tension of the test material was investigated in accordance with the standardised guidelines OECD 115 and EU Method A.5, under GLP conditions. The study was awarded a reliability score of 1 in accordance with the criteria set forth by Klimisch et al. (1997).

Due to the low water solubility of the test material, a solution with a concentration of 1035.8 mg/L was prepared. For this purpose 100 mL double distilled water were added to 103.58 mg of the test material and stirred overnight to create an oversaturated solution. Due to the fact that the test material was not dissolved completely, the saturated solution was decanted and filtered via an HPLC filter. Subsequently 90 mL of the filtered solution were diluted to 100 mL with double distilled water to create a solution with a concentration of about 90 % of the solubility. This solution was measured twice. The temperature was adjusted and kept at 20 °C.

The measurement vessel was raised automatically until the ring was immersed below the surface of the solution. Subsequently, the table top was lowered automatically to detach the ring from the surface until the maximum force was reached. The force was read on the tensiometer. The liquid layer attached to the ring was not separated from the ring during the measurements. After completing the first measurement, measurements were repeated until a constant surface tension value was reached.

Under the conditions of this study the surface tension of the test material was 52.7 mN/m, therefore the test material is to be regarded as surface active.