Octane-1,2-diol

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:

other: According to international guideline(s), GLP-compliant, performed in recognized contract research organization, no restrictions, fully adequate for assessment.

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)

Type of method:

plate method

Key result

Surface tension:

41.95 mN/m

Temp.:

20 °C

Conc.:

1 g/L

Remarks on result:

other: the test item is surface active

The values of the single determinations show no significant difference (3.19 % between mean values of the two measurement series, see Table 1). All measured values lay clearly below the threshold for surface tension which is stated in the guidelines.

 

The surface tension of the negative control was determined with 72.66 mN/m at 20.1 °C, i.e. within the accepted range of 1 % deviation from literature value (72.75 mN/m).

 

The result of the test is considered valid.

 

Table 1: Measured Values

 

Measurement	Surface Tension
	mN/m
No	First Series	Second Series	Negative Control
1	42.32	43.62	72.77
2	41.98	43.32	72.65
3	41.89	43.20	72.60
4	41.93	43.30	72.65
5	41.86	43.20	72.57
6	41.93	43.28	72.60
7	41.89	43.23	72.74
8	41.93	43.23	72.67
9	41.89	43.30	72.67
10	41.89	43.23	72.65
Mean	41.95	43.29	72.66
Standard Deviation	0.14	0.12	0.06

 

Description of key information

41.95 mN/m (1 g/L  at 20°C (OECD 115, EC A.5)

Key value for chemical safety assessment

Surface tension:

41.95

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

1 000