Reaction mass of tridecanal and 2-methyldodecanal and pentadecanal and 2-methyltetradecanal

Surface tension

Link to relevant study record(s)

Reference

Endpoint:

surface tension

Type of information:

experimental study

Adequacy of study:

key study

Study period:

Study initiation date: 24 June 2009 Study completion date: 28. October 2009

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: Performed according to relevant guideline and compliant with GLP

Qualifier:

according to guideline

Guideline:

OECD Guideline 115 (Surface Tension of Aqueous Solutions)

Version / remarks:

adopted 1995-07-27

Qualifier:

according to guideline

Guideline:

EU Method A.5 (Surface Tension)

Version / remarks:

Directive 92/69/EEC, Official Journal L 383 A 1992

GLP compliance:

yes

Type of method:

ring method

Surface tension:

42.3 mN/m

Temp.:

20 °C

Conc.:

1.9 mg/L

Remarks on result:

other: Mean value of the last 10 measurements

Single measurements table:

	First run	Second run
Number of measurements	10	10
Total measuring time [min:s]	6:13	6:31
Measuring time of the last 10 measurements [min:s]	6:13	4:42
Measurement 1	42.07	42.67
Measurement 2	42.03	42.58
Measurement 3	42.01	42.53
Measurement 4	41.99	42.51
Measurement 5	41.99	42.49
Measurement 6	41.98	42.47
Measurement 7	41.98	42.45
Measurement 8	41.99	42.45
Measurement 9	41.98	42.45
Measurement 10	42.00	42.45
Mean value [mN/m]^1)	42.00	42.51
Surface tension [mN/m]^2)	42.00	42.51
Mean value [mN/m]	42.3

1) Mean value of the last ten measurements

2) corrected mean value (measured value x apparatus factor = corrected value)

Due to the very low initial weight of the test item, wall effects can not be excluded.

Conclusions:

Surface tension (at 20°C): 42.3 mN/m
The test item is considered to be surface active.

Executive summary:

The surface tension of aqueous solutions of the test item was determined compliant with GLP according to OECD guideline no. 115 [adopted on 27 July 1995] and EU test method A.5 [Directive 92/69/EEC, Official Journal L 383 A 1992] with the ring method.

Surface tension (at 20°C): 42.3 mN/m

The test item is considered to be surface active.

Description of key information

The surface tension of aqueous solutions of the test item was determined according to OECD guideline no. 115 [adopted on 27 July 1995] and EU test method A.5 [Directive 92/69/EEC, Official Journal L 383 A 1992] with the ring method.
Surface tension (at 20°C): 42.3 mN/m
The test item is considered to be surface active.

Key value for chemical safety assessment

Surface tension:

42.3

in mN/m at 20°C and concentration in mg/L:

1.9

Additional information

The surface tension of aqueous solutions of the test item was determined according to OECD

guideline no. 115 [adopted on 27 July 1995] and EU test method A.5 [Directive 92/69/EEC, Official

Journal L 383 A 1992] with the ring method.

Surface tension (at 20°C): 42.3 mN/m

The test item is considered to be surface active.