Octanoic acid, monoester with glycerol

Surface tension

Link to relevant study record(s)

Reference

Endpoint:

surface tension

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: Guideline study without GLP

Qualifier:

according to guideline

Guideline:

EU Method A.5 (Surface Tension)

Deviations:

no

Qualifier:

equivalent or similar to guideline

Guideline:

OECD Guideline 115 (Surface Tension of Aqueous Solutions)

Deviations:

no

GLP compliance:

no

Type of method:

ring method

Surface tension:

29.5 mN/m

Temp.:

20 °C

Conc.:

1 g/L

Results in mN/m:

Test item	Water calibration	1st TS, c = 1.088 g/L	2nd TS, c = 1.104 g/L
Value 1	71.7	29.4	29.2
Value 2	71.7	29.3	29.2
Value 3	71.8	29.3	29.2
Value 4	71.7	29.2	29.1
Value 5	71.8	29.2	29.2
Value 6	71.8	29.2	29.2
Arithmetic mean	71.8	29.3	29.2
Standard deviation	0.1	0.1	0

Calculation:

Arithmetic mean of two test solutions: 29.25 mN/m

Water theoretical value: 72.4 mN/m

Correction factor: 1.0084

Arithmetic mean corrected by calibration factor determined via water calibration: 29.5 mN/m

Executive summary:

The test item octanoic acid, monoester with glycerol has a surface tension of 29.5 mN/m (c = 1 g/L) in accordance with the test method A.5 "Surface Tension" as described in the Commission Regulation (EC) No. 440/2008 of 30 May 2008.

Key value for chemical safety assessment

Surface tension:

29.5

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

1 000

Additional information

Guideline A.5 (similar to OECD Guideline 115): For this test the "ring-method" was used.