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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:
11 July - 18 July 2018
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
GLP compliance:
yes (incl. certificate)
Type of method:
ring method
Specific details on test material used for the study:
- Test material: 4-Aminobenzoyl-b-alanine
- Batch number: 12/18
- Expiry date: 01 September 2019
- Storage: Room temperature
Key result
Surface tension:
71.6 mN/m
Temp.:
20 °C
Conc.:
1 g/L

Table 1: Surface Tension at 20°C

Measurements

Test item 1 g/L solution

(mN/m)

1

69.2

2

67.9

3

66.5

4

67.1

5

66.9

6

69.0

Average value

67.7

S.D.

1.13

RSD%

1.67%

Φb

1.0570

Corrected value

71.6

Conclusions:
The surface tension at 20°C of 4-Aminobenzoyl-b-alanine is 71.6 mN/m for a 1 g/L concentration in water. Therefore, 4-Aminobenzoyl-b-alanine is not regarded as a surface-active material.

Description of key information

The surface tension of 4 -Aminobenzoyl-b-alanine at 20°C was determined according to OECD Guideline 115 and EC Method A.5 and was found to be 71.6 mN/m for a 1 g/L concentration in water. Therefore,

4 -Aminobenzoyl-b-alanine is not regarded as a surface-active material.

Key value for chemical safety assessment

Surface tension:
71.6
in mN/m at 20°C and concentration in mg/L:
1 000

Additional information