Registration Dossier

Diss Factsheets

Administrative data

Endpoint:
surface tension
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2018-03-01 - 2018-03-02
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

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

Materials and methods

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

Test material

Constituent 1
Chemical structure
Reference substance name:
1-benzyl-5-phenylbarbituric acid
EC Number:
276-940-2
EC Name:
1-benzyl-5-phenylbarbituric acid
Cas Number:
72846-00-5
Molecular formula:
C17H14N2O3
IUPAC Name:
1-benzyl-5-phenylpyrimidine-2,4,6(1H,3H,5H)-trione
Test material form:
solid: particulate/powder
Specific details on test material used for the study:
Molecular Formula : C17H14N2O3
Molecular Weight : 294.3
Physical Appearance : White powder
CAS No. : 72846-00-5
Batch Number : 170240
Purity : 99.5%

Results and discussion

Surface tension
Key result
Surface tension:
55.7 mN/m
Temp.:
20 °C
Conc.:
90 vol%

Applicant's summary and conclusion

Conclusions:
The surface tension of test item was determined by ring method at 20 ± 0.5 °C. The method was based on the measurement of the force which was necessary to exert vertically on a ring in contact with the surface of the liquid. The tensiometer was calibrated using analytical grade water at 23 ±
0.5 °C before the measurements. The surface tension of water was found within the acceptance criteria (72.3 ± 0.5 mN/m). 90% saturated solution of test item was prepared in analytical grade water. Three samples of the test item were prepared in analytical grade water to determine the surface tension at 20 ± 0.5 °C. The surface tension of three samples of the test item was found 55.4 mN/m, 55.7 mN/m and 55.9
mN/m respectively. The mean surface tension of the test item was found 55.7 mN/m.
The test item was considered as surface active compound as the surface tension value was found less than 60 mN/m.
Based on the results obtained from the study, it is concluded that, the surface tension of 1-Benzyl-5-phenylbarbituric acid (BPBA) is 55.7 mN/m at 20 ± 0.5 °C.
Executive summary:

The surface tension of test item was determined by ring method at 20 ± 0.5 °C. The method was based on the measurement of the force which was necessary to exert vertically on a ring in contact with the surface of the liquid. The tensiometer was calibrated using analytical grade water at 23 ± 0.5 °C before the measurements. The surface tension of water was found within the acceptance criteria (72.3 ± 0.5 mN/m).

90% saturated solution of test item was prepared in analytical grade water. Three samples of the test item were prepared in analytical grade water to determine the surface tension at 20 ± 0.5 °C.

The surface tension of three samples of the test item was found 55.4 mN/m, 55.7 mN/m and 55.9 mN/m respectively. The mean surface tension of the test item was found 55.7 mN/m.

The test item was considered as surface active compound as the surface tension value was found less than 60 mN/m.

Based on the results obtained from the study, it is concluded that, the surface tension of 1-Benzyl-5-phenylbarbituric acid (BPBA) is 55.7 mN/m at 20 ± 0.5 °C.