3,7-dimethyloct-1-en-3-yl acetate

Surface tension

Link to relevant study record(s)

Reference

Endpoint:

surface tension

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

test procedure in accordance with generally accepted scientific standards and described in sufficient detail

Qualifier:

no guideline followed

Principles of method if other than guideline:

Drop volume tensiometers serve to measure the surface and interfacial tension of liquids. The method is especially suited to determining dynamic interfacial tensions. Here, the volume of a drop detaching from the needle is measured very precisely. The surface/interfacial tension is derived from this depending on whether the drop forms in air or in a second non-miscible phase (oil).

GLP compliance:

no

Type of method:

other: Drop volume tensiometers

Key result

Surface tension:

25.82 mN/m

Temp.:

20 °C

Remarks on result:

other: The test was performed with the pure substance. Therefore, concentration ist not applicable.

Equation for the determination of the surface tension (σ) dependent on the temperature (T).

σ = a0 + a1*T

 

Koeffizient a0 = 27.73661

Koeffizient a1 = -0.09595

 

Temperature	Surface tension (exp.)	Surface tension (cal.)	Error
°C	mN/m	mN/m	%
20	25.86	25.82	0.15
20	25.90	25.82	0.33
30	24.89	24.86	0.12
30	24.88	24.86	0.07
40	23.85	23.90	-0.19
40	23.91	23.90	0.04
50	22.83	22.94	-0.48
50	22.87	22.94	-0.31
60	21.89	21.98	-0.42
60	21.96	21.98	-0.08
70	20.94	21.02	-0.38
70	20.99	21.02	-0.13
80	20.21	20.06	0.75
80	20.17	20.06	0.55

Conclusions:

The surface tension of the test item was determined to be 25.82 mN/m at 20 °C.

Executive summary:

The determination of the surface tension of the test item was performed using a drop volume tensiometer. The surface tension of the test item was determined in a temperature range between 20 to 80 °C. The surface tension was determined to be 25.82 mN/m at 20 °C. Due to the fact that the surface tension is lower than 60 mN/m, the test item has surface-active properties.

Description of key information

The surface tension of the test item was determined to be 25.82 mN/m at 20 °C.

Key value for chemical safety assessment

Surface tension:

25.82

Additional information

The determination of the surface tension of the test item was performed using a drop volume tensiometer. The surface tension of the test item was determined in a temperature range between 20 to 80 °C. The surface tension was determined to be 25.82 mN/m at 20 °C. Due to the fact that the surface tension is lower than 60 mN/m, the test item has surface-active properties.