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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:
Experiment start and end date - 08 June 1999; Study completion date - 11 June 1999.
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)
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method A.5 (Surface Tension)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
OECD harmonised ring method
Specific details on test material used for the study:
The test article had the following physico-chemical properties:
Name: 40574/B
Batch no: WP 23/PP
Expiry date: 08 February 2006
Storage: At room temperature about 20 °C
Surface tension:
70.2 mN/m
Temp.:
20.2 °C
Conc.:
1 000 mg/L

Conc. (incl. qualifier): ca. 1000 mg/L

Conclusions:
The surface tension of FAT 40574/B was determined to be 70.02 nm at 20.2 °C
Executive summary:

The determination of the surface tension of an aqueous solution of FAT 40'574/B was based on the OECD Guideline No. 115: "Surface Tension of Aqueous Solutions" (1995) and on the EEC Directive 92/69, Part A, Methods for the determination of physico-chemical properties, A.5 "Surface tension", EEC Publication No. L383, December 1992. The determination of the surface tension was accomplished by means of a tensiometer, using the ring method. The force which was required to withdraw a horizontally suspended ring from the surface of the solution is measured. In conclusion, the surface tension of FAT 40'574/B in water (at a concentration of about 0.1 %) was determined to be 70.2 mN/m at 20.2 °C. Based on the criteria as outlined in the OECD Guideline, FAT 40574/B should not be regarded as a surface active substance.

Description of key information

FAT 40574/B should not be regarded as a surface active substance.

Key value for chemical safety assessment

Surface tension:
70.2
in mN/m at 20°C and concentration in mg/L:
1 000

Additional information

The determination of the surface tension of an aqueous solution of FAT 40574/B was based on the OECD Guideline No. 115: "Surface Tension of Aqueous Solutions" (1995) and on the EEC Directive 92/69, Part A, Methods for the determination of physico-chemical properties, A.5 "Surface tension", EEC Publication No. L383, December 1992. The determination of the surface tension was accomplished by means of a tensiometer, using the ring method. The force which was required to withdraw a horizontally suspended ring from the surface of the solution is measured. In conclusion, the surface tension of FAT 40574/B in water (at a concentration of about 0.1 %) was determined to be 70.2 mN/m at 20.2 °C. Based on the criteria as outlined in the OECD Guideline, FAT 40574/B should not be regarded as a surface active substance.