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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:
2010 08 30 to 2010 09 01
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Guideline study
Qualifier:
according to
Guideline:
OECD Guideline 115 (Surface Tension of Aqueous Solutions)
Qualifier:
according to
Guideline:
EU Method A.5 (Surface Tension)
GLP compliance:
yes (incl. certificate)
Type of method:
ring method
Surface tension:
61.13 mN/m
Temp.:
20 °C
Conc.:
1 g/L

1.1   Surface Tension of a 1 g/L Aqueous Solution of p-Aminophenol

 

Table2:    Surface Tension, Temperature

Measurement

No.*

Time**

[min]

Surface Tension

[mN/m]

Temperature

[°C]

1

253.41

61.21

19.9

2

254.14

61.17

19.9

3

254.88

61.17

19.9

4

255.64

61.16

19.9

5

256.37

61.15

19.9

6

257.11

61.12

19.9

7

257.85

61.08

19.9

8

258.59

61.08

19.9

9

259.31

61.07

19.9

10

260.04

61.08

19.9

MV

-

61.13

19.9

SD

-

0.05

0.00

MV=mean value

SD=standard deviation
*)
   of the last 10 measurements

**) Time from transfer of the test solution into the test vessel until end of each measurement

 

Conclusions:
The surface tension of a 1 g/L aqueous solution of p-Aminophenol was determined to be 61.13 mN/m (standard deviation 0.05 mN/m).

Due to the fact that the surface tension is > 60 mN/m, the test item is classified as not surface-active substance

Description of key information

The experimental result from the key study is 61.13 mN/m at 20 C in 1000 mg/L.

Key value for chemical safety assessment

Surface tension:
61.13
in mN/m at 20°C and concentration in mg/L:
1 000

Additional information