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Physical & Chemical properties

Surface tension

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Reference
Endpoint:
surface tension
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Guideline 115 (Surface Tension of Aqueous Solutions)
Deviations:
no
Qualifier:
according to
Guideline:
EU Method A.5 (Surface Tension)
Deviations:
no
GLP compliance:
yes
Type of method:
OECD harmonised ring method
Specific details on test material used for the study:
SOURCE OF TEST MATERIAL
- Source and lot/batch No.of test material: BCBQ4646V
- Expiration date of the lot/batch: 31.07.2017 (re-test date)
- Purity test date: na

STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material: room temperature

TREATMENT OF TEST MATERIAL PRIOR TO TESTING
- Treatment of test material prior to testing: no

Key result
Surface tension:
ca. 66.6 mN/m
Temp.:
20 °C
Conc.:
1.01 g/L

The surface tension of the substance was determined in an experimental study under GLP conditions according to OECD Test Guideline 115 using the harmonised OECD ring method.

The mean surface tension (n=5) was 66.6 mN/m.

The test substance is considered as not surface active, as its surface tension is > 60 mN/m.

C was calculated as 1.033 (from the four water tensiometer readings (mN/m): 70.4, 70.5, 70.4, 70.5).

Surface tension at the five time points, with a mean of 66.6 mN/m and a standard deviation of 0.06.

 time point  tensiometer reading (mN/m)  experimental value EV (mN/m)  surface tension (mN/m)
 4:00 64.9 67.0 66.6
 4:20 64.8 66.9 66.5
 4:40 64.9 67.0 66.6 
 5:00 64.9 67.0 66.6
 5:20 64.8 66.9 66.5
Executive summary:

The surface tension of the registered substance was determined in an experimental study under GLP conditions according to OECD Test Guideline 115 using the harmonised OECD ring method. The experiment was performed at 20°C with a suspension of 0.101 g test substance in 100 mL water.

The surface tension was determined at five time points (4:00 tp 5:20 after stirring (3h) and filtering (0.20 µm) at intervals of 20 seconds).

The mean surface tension was 66.6 mN/m (standard deviation 0.06)

The test substance is considered as not surface active, as its surface tension is > 60 mN/m.

Description of key information

The surface tension of the registered substance was determined in an experimental study under GLP conditions according to OECD Test Guideline 115 using

harmonised OECD ring method (SIA105).

The mean surface tension was 66.6 mN/m (standard deviation 0.06)

The test substance is considered as not surface active, as its surface tension is > 60 mN/m.

Key value for chemical safety assessment

Surface tension:
66.6
in mN/m at 20°C and concentration in mg/L:
1 010

Additional information