1,3-Butanediol, reaction products with 1,1'-methylenebis[4-isocyanatobenzene], propylene glycol and tripropylene glycol

Surface tension

Link to relevant study record(s)

Reference

Endpoint:

surface tension

Type of information:

experimental study

Adequacy of study:

key study

Study period:

Start date of the experimental work: 22 August 2014 and Completion date of the experimental work: 09 October 2014.

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

EU Method A.5 (Surface Tension)

Deviations:

no

GLP compliance:

yes

Type of method:

ring method

Surface tension:

71.3 mN/m

Temp.:

20 °C

Conc.:

90 other: % (90% saturated)

Remarks on result:

other: non surface active

Sample preparation and analysis

The sample reacts with water slowly to form a white solid. The sample was shaken for 1 hour to obtain the results.

Surafce tension data:

Solution age (minutes)	Surface tension reading (mN/m)
Run 1
1	71.3
10	71.2
30	71.1
60	71.2
120	71.2
180	71.2
240	71.2
Run 2
1	71.0
10	71.5
30	71.5
60	71.3
120	71.3
180	71.3
240	71.3

result: 71.3 mN.m-1 (mean value)

Conclusions:

Result : 71.3 mN.m-1 (mean value)

Description of key information

The surface tension is 71.3 mN.m-1 (mean value)at 20°C and solution concentration 90% saturated.

Key value for chemical safety assessment

Surface tension:

71.3