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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
Guideline:
EU Method A.5 (Surface Tension)
Qualifier:
equivalent or similar to guideline
Guideline:
OECD Guideline 115 (Surface Tension of Aqueous Solutions)
GLP compliance:
yes (incl. QA statement)
Type of method:
OECD harmonised ring method
Surface tension:
68.94 mN/m
Temp.:
20 °C
Conc.:
1 000 mg/L
Conclusions:
The surface tension of 2 -chloro-S-chloromethylpyridine (CCMP) is 68.94 mN/m at 20°C.
Executive summary:

The surface tension of 2 -chloro-5-chloromethylpyridine (CCMP) was determined according to guideline 92/69/ EEC method A.5. and OECD guideline 115. According to the EEC guideline a solution of about 1000 mg/L has been prepared, due to the fact that the water solubility of 2 -chloro-5-chloromethylpyridine (CCMP) is above 1000 mg/L.

The method (OECD harmonized ring method) is based on the measurement of the maximum vertical force, which is necessary to separate a ring being in contact with the surface of the liquid filled in a measuring cup, from the surface of this liquid.

Two aqueous solutions of the test item in distilled water ( 200.8 mg and 200.6 mg ad 200 mL) were prepared by shacking the flasks, stirring 2 and 3 h at room temperature and using the ultrasonic bath for 15 minutes. Ten measurements at a temperature of 20 °C + 0.5°C, approximately every 50 sec., were carried out. A correction factor (Harkins & Jordan) has been accounted.

A calibration of the apparatus was carried out using distilled water at 20 °C ± 0.5°C.

The surface tension of 2 -chloro-S-chloromethylpyridine (CCMP) is 68.94 mN/m at 20°C.

Description of key information

The surface tension of 2 -chloro-5-chloromethylpyridine (CCMP) was determined according to guideline 92/69/ EEC method A.5. and OECD guideline 115. According to the EEC guideline a solution of about 1000 mg/L has been prepared, due to the fact that the water solubility of 2 -chloro-5-chloromethylpyridine (CCMP) is above 1000 mg/L.

The method (OECD harmonized ring method) is based on the measurement of the maximum vertical force, which is necessary to separate a ring being in contact with the surface of the liquid filled in a measuring cup, from the surface of this liquid.

Two aqueous solutions of the test item in distilled water ( 200.8 mg and 200.6 mg ad 200 mL) were prepared by shacking the flasks, stirring 2 and 3 h at room temperature and using the ultrasonic bath for 15 minutes. Ten measurements at a temperature of 20 °C + 0.5°C, approximately every 50 sec., were carried out. A correction factor (Harkins & Jordan) has been accounted.

A calibration of the apparatus was carried out using distilled water at 20 °C ± 0.5°C.

The surface tension of 2 -chloro-S-chloromethylpyridine (CCMP) is 68.94 mN/m at 20°C.

Key value for chemical safety assessment

Surface tension:
68.94
in mN/m at 20°C and concentration in mg/L:
1 000

Additional information

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