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Surface tension

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Reference
Endpoint:
surface tension
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2006-06-06 to 2006-06-08
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Guideline 115 (Surface Tension of Aqueous Solutions)
Version / remarks:
1981
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
OECD harmonised ring method
Key result
Surface tension:
69.9 mN/m
Temp.:
21 °C
Conc.:
90 other: % saturation

Calibration factor based on measurement with water

A) Measured value of the surface tension of water : 69.5 mN/m

B) EC / OECD standard reading for surface tension of water: 72.3 mN/m

Resulting calibration factor (B/A): 1.04

According to OECD 115, in addition to the calibration factor based on water, a correction based on the Harkins-Jordan correctionwas performed (tabulated values within OECD 115).

Full test results:

Test

Test Temp.

Surface Tension

After applying

Corrected Value

No.

(°C)

(mN/m)

Calibration Factor

(mN/m)

 

 

 

(mN/m)

 

1

21

68.0

70.7

69.9

2

21

68.0

70.7

69.9

Result: 69.9 mN/m (mean value)

Conclusions:
Surface tension (OECD 115): 69.9 mN/m at 21°C (90% saturation)
Executive summary:

The surface tension of 1-chloro-2,3-dimethylbenzene was detemined with the ring-method according to OECD 115 (1981) compliant with GLP.

A saturated solution in water was produced by 90 min of vigorous shaking and phse separation. The solution was diluted with water to 90% saturation and measurements performed at 21°C.

Two replicate measurements were performed with the following results (calibrated using water; corrected based on Harkins-Jordan):

1) 69.9 mN/m

2) 69.9 mN/m

Final result:

Suface tension of 1-chloro-2,3-dimethylbenzene in water (90% saturation, 21°C): 69.9 mN/m.

Based on a surface tension of water of 72.3 mN/m at 23°C the substance is not surface active.

Description of key information

Surface tension (OECD 115): 69.9 mN/m at 21°C (90% saturation, ca. 18 mg/L based on key result for solubility in water)

Key value for chemical safety assessment

Surface tension:
69.9
in mN/m at 20°C and concentration in mg/L:
18

Additional information

The surface tension of 1-chloro-2,3-dimethylbenzene was detemined with the ring-method according to OECD 115 (1981) compliant with GLP.

A saturated solution in water was produced by 90 min of vigorous shaking and phse separation. The solution was diluted with water to 90% saturation and measurements performed at 21°C.

Two replicate measurements were performed with the following results (calibrated using water; corrected based on Harkins-Jordan):

1) 69.9 mN/m

2) 69.9 mN/m

Final result:

Surface tension of 1-chloro-2,3-dimethylbenzene in water (90% saturation, 21°C): 69.9 mN/m.

Based on a surface tension of water of 72.3 mN/m at 23°C the substance is not surface active.