4,4'-(9H-fluoren-9-ylidene)bis(2-chloroaniline)

Surface tension

Link to relevant study record(s)

Reference

Endpoint:

surface tension

Type of information:

experimental study

Adequacy of study:

key study

Study period:

18 Jan-28 Jun 1991

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Remarks:

Also according to GLP

Qualifier:

according to guideline

Guideline:

EU Method A.5 (Surface Tension)

Version / remarks:

1984

GLP compliance:

yes

Type of method:

ring method

Surface tension:

71 mN/m

Temp.:

24 °C

Conc.:

90 other: % saturated solution

Calibration factor: 1.0143

Surface tension readings for distilled water at 24 °C:

Time (minutes)	Measured surface tension (mN/m)
	Before test solution measurement	After test solution measurement
0	70.4	72.0
2	70.4	72.0
4	70.2	72.0
6	70.2
8	70.2
Mean of last three readings	70.2	72.0
Overall mean	71.1

Surface tension readings of test solution at 24 °C:

Time (minutes)	Measured surface tension (mN/m)
0	72.2
2	72.3
4	71.6
6	71.0
8	70.9
10	70.2
12	70.5
14	70.2
16	70.2
18	70.0
20	70.0
22	70.0
Mean of last three readings	70.0

Conclusions:

The surface tension of the test item is 71 mN/m at 24 °C for a 90% saturated solution.

Executive summary:

The surface tension of the test item was determined according to the EC A.5 method in compliance with GLP. Using the ring method, the test material was found to have a surface tension of 71 mN/m at 24 °C (90% saturated solution).

Description of key information

71 mN/m at 24 °C, 90% saturated solution

Key value for chemical safety assessment

Surface tension:

71

Additional information

The surface tension of the substance was determined according to EEC Method A.5 (1984). The OECD harmonised ring method was applied. The substance is not surface active.