1-isocyanato-2(or 4)-(4-isocyanatobenzyl)benzene and their reaction products with [(methylethylene)bis(oxy)]dipropanol and butane-1,3-diol and propylene 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:

19/12/2014 – 22/12/2014

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: Conducted at a GLP accredited laboratory

Qualifier:

according to guideline

Guideline:

EU Method A.5 (Surface Tension)

Deviations:

no

GLP compliance:

yes

Type of method:

ring method

Surface tension:

61.5 mN/m

Temp.:

20 °C

Conc.:

90 other: % saturated solution

Remarks on result:

other:

Remarks:

mean value

Measured value of the surface tension of water : 71.6 mN.m-1

EC standard reading for surface tension of water : 72.75 mN.m-1

Sample Preparation and Analysis:

Sample reacts with water slowly to form a white solid. Sample was shaken for 1 hour before filtering and dilution to obtain the result below.

Surface tension data:

Solution Age (minutes)		Surface Tension Reading (mN/m)
	Run 1
1		70.1
30		65.6
60		62.9
120		61.5
180		61.5
240		61.5
	Run 2
1		70.3
30		66.2
60		62.1
120		61.4
180		61.4
240		61.4

Result : 61.5 mN.m-1 (mean value)

Conclusions:

Result : 61.5 mN.m-1 (mean value)

Description of key information

The surface tension was measured using the Ring Method. Result : 61.5 mN.m-1 (mean value).

Key value for chemical safety assessment

Surface tension:

61.5