Registration Dossier

Administrative data

Endpoint:
surface tension
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2018-04-19 (experimental phase)
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Remarks:
GLP

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2018
Report Date:
2018

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to
Guideline:
OECD Guideline 115 (Surface Tension of Aqueous Solutions)
Version / remarks:
OECD Guideline 115 dated 27. July 1995 “Surface tension of aqueous solutions“
Deviations:
no
Qualifier:
according to
Guideline:
EU Method A.5 (Surface Tension)
Version / remarks:
EU-Method A.5 “Surface Tension“ from 30. May 2008, published on 31 May 2008
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
plate method

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
liquid
Specific details on test material used for the study:
The test item was stored in a tightly closed vessel at room temperature (15.8 – 23.0°C).

Results and discussion

Surface tension
Key result
Surface tension:
>= 72.06 - <= 72.62 mN/m
Temp.:
22.3 °C
Conc.:
1 g/L
Remarks on result:
other: Conc. of the solid content of the test item was 1 g/l.

Applicant's summary and conclusion

Conclusions:
The study was performed according to OECD TG 115 under GLP on the substance to be registered itself, validity criteria were met, the test procedure is well documented and therefore reliability of Klimisch 1 has been assigned. During the specified period of time, no significant changes in the surface tension were detected. Values ranging from 72.06 mN/m to 72.62 mN/m were recorded showing no significant variations. The values of the single determinations show no significant difference (0.35% between mean values of the two measurement series).
As the determined surface tension of 2-Butyne-1,4-diol, reaction products with 1,2-oxathiolane 2,2-dioxide and sodium hydroxide (HBOPS-Na) was higher than 60 mN/m, the test item can be classified as not surface active.
Executive summary:

The surface tension of 2-Butyne-1,4-diol, reaction products with 1,2-oxathiolane 2,2-dioxide and sodium hydroxide (HBOPS-Na) was determined as 72.16 ± 0.10 mN/m at 20.3 °C according to OECD 115 resp. EU A.5 under GLP. One measurement was performed for verification (after 60 minutes). No significant changes and thus no significant dependence on time was observed.

As these values were higher than 60 mN/m, 2-Butyne-1,4-diol, reaction products with 1,2-oxathiolane 2,2-dioxide and sodium hydroxide (HBOPS-Na) was classified as not surface active. The surface tension of the negative control lay within the accepted range.