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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
Study period:
7 September - 17 November 2017
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
Qualifier:
according to
Guideline:
other: DIN EN 14370 Bestimmung der Oberflächenspannung; November 2004
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
ring method
Specific details on test material used for the study:
SOURCE OF TEST MATERIAL
- Source and lot/batch No.of test material: RY-95-001
- Expiration date of the lot/batch: July 01, 2022

STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material: at 20°C +/- 5°C, in the dark
Key result
Surface tension:
71.5 mN/m
Temp.:
20 °C
Conc.:
1 g/L

Surface Tension of Water: 72.8 mN/m at 20 °C ± 0.5 °C

The test item which lowers the surface tension of the medium in which it is dissolved, and/or the interfacial tension with other phases, and, accordingly, is positively adsorbed at the liquid/vapour and/ or at other interfaces - is a surface active test item.

Conclusions:
The surface tension of an aqueous solution of the test item (1 g/L) was determined to be: 71.5 mN/m at 20 °C ± 0.5 °C.
Executive summary:

The surface tension of the test item was determined using a tensiometer. Surface Tension of Water: 72.8 mN/m at 20 °C ± 0.5 °C. The surface tension of an aqueous solution of the test item (1 g/L) was determined to be: 71.5 mN/m at 20 °C ± 0.5 °C.

Description of key information

The surface tension of Reactive Yellow 95 (meta) was determined to be 71.5 mN/m at 20°C.

Key value for chemical safety assessment

Surface tension:
71.5
in mN/m at 20°C and concentration in mg/L:
1 000

Additional information

The surface tension of the test item was determined using a tensiometer. Surface Tension of Water: 72.8 mN/m at 20 °C ± 0.5 °C. The surface tension of an aqueous solution of the test item (1 g/L) was determined to be: 71.5 mN/m at 20 °C ± 0.5 °C.