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Administrative data

Endpoint:
surface tension
Type of information:
experimental study
Adequacy of study:
key study
Study period:
October 01, 2001 till October 02, 2001
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Study according to OECD Guideline 115 (Surface Tension of Aqueous Solutions) under GLP

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2001
Report date:
2001

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 115 (Surface Tension of Aqueous Solutions)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
ring method

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
Identity: ZP-TIX 1014
Batch: NW-01-028
Purity > 99%,
Appearance: Solid
Expiration date: 30.12.2001
Storage: At room temperature at about 20°C

Results and discussion

Surface tension
Surface tension:
ca. 68.5 mN/m
Temp.:
20.3 °C
Conc.:
90 other: of saturation concentration

Any other information on results incl. tables

The calibration factor was determined to be 1.007 for double destilled water.

The following table show the individual measurements for the surface tension of the aqueous test item solution. From these, the mean and the corrected value for the given solution were calculated and given in the same table.

Time expired

[hours:min]

Temperature

[°C]

Surface tension

[mN/m]

measured

mean value

calculated from

the bold values

 

(δ*)

corrected for

calibration and

for Harkins-

Jordan

 

(δ)

First sample

 

00:01

19.9

68.4

68.22

68.42

00:03

20.0

68.6

00:05

20.1

68.1

00:06

20.1

69.0

00:07

20.1

68.6

Second sample

 

00:10

20.5

68.1

00:11

20.5

67.6

00:12

20.5

67.9

00:14

20.5

68.3

00:15

20.6

67.8

00:16

20.6

67.9

with

δ*. ΦbFc=δ(68.22.1.007.0.996 = 68.42)

Φb= calibration factor = 1.007

Fc= factor for correction acc. to Harkins-Jordan = 0.996 for 68 mN/m

Applicant's summary and conclusion

Conclusions:
The surface tension of ZP-TIX 1014 in water (90 % of saturation concentration) was determined to be 68.5 mN/m at 20.3 +/- 0.4 °C. Based on the citeria as outlined by OECD Guideline, ZP-TIX 1014 is not a surface active substance.
Executive summary:

The determination of the surface tension of an aqueous solution of ZP-TIX 1014 was based on the OECD Guideline No. 115: Surface Tension of Aqueous Solutions) EEC Directive 92/69, Part A, Methods for the determination of physico-chemical properties, A.5 "Surface tension", EEC Publications No. L383, December 1992.

The surface tension of ZP-TIX 1014 in water (90 % of saturation concentration) was determined to be 68.5 mN/m at 20.3 +/- 0.4 °C. Based on the citeria as outlined by OECD Guideline, ZP-TIX 1014 is not a surface active substance.