Registration Dossier

Administrative data

Endpoint:
surface tension
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Study according to OECD 115

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1997
Report Date:
1997

Materials and methods

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

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
name: Cyanamide, (4,5-dihydroxy-2-thiazolyl)-
molecular formula: C4 H5 N3 S
molecular weight: 127.2
physical state: solid
analytical purity: 99.8 %

Results and discussion

Surface tension
Surface tension:
71 mN/m
Temp.:
20 °C
Conc.:
1 g/L

Any other information on results incl. tables

Measurement of the test substance:

  Test No. 1 Test No. 2 Test No. 2
concentration of CIT approx. 1 a/L approx. 1 a/L approx. 1 a/L
1st measurement recorder signal 90.4 92.0 92.0
Surface tension experimental 69.2554 mN/m 70.4812 mN/m 70.4812 mN/m
2nd measurement recorder signal 90.6 93.8 93.8
Surface tension experimental 69.4087 mN/m 7 1.8602 mN/m 7 1.8602 mN/m
3rd measurement recorder signal 90.7 94.0 94.0
Surface tension experimental 69.4853 mN/m 72. 01 34 mN/m 72. 01 34 mN/m
4tn measurement recorder signal -- 94.4 94.4
Surface tension experimental -- 72. 3198 mN/m 72. 3198 mN/m
mean 69.38 mN/m 71. 67 mN/m 71. 67 mN/m
R.S.D. 0.17% 1.14% 1.14%
Surface tension corrected 69.2 mN/m 71. 65 mN/m 71. 65 mN/m
Surface tension, mean (R.S.D) 71 .3 mN/m (273%)

Applicant's summary and conclusion

Conclusions:
CIT is to be classified as non-surface active according to EC Guideline A.5.
Executive summary:

The surface tension of aqueous solutions of CIT determind according OECD 115 with concentrations of approx. 1g/L was

determined to be 71 mN/m at 20 °C.