Benzene, 1-chloro-2,3-dimethyl-

Surface tension

Link to relevant study record(s)

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

Guideline:

OECD Guideline 115 (Surface Tension of Aqueous Solutions)

Version / remarks:

1981

Deviations:

no

GLP compliance:

yes (incl. QA statement)

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.