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Surface tension

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Endpoint:
surface tension
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2010
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
EU Method A.5 (Surface Tension)
Deviations:
no
GLP compliance:
no
Remarks:
Conducted in a GLP compliant laboratory but not as part of a formal GLP study.
Type of method:
plate method
Surface tension:
50.4 mN/m
Temp.:
25 °C
Conc.:
90 other: % saturation concentration
Remarks on result:
other: Mean of two tests (test 1 = 50.03 mN/m, test 2 = 50.73 mN/m).

No significant ageing of the test substance was observed.

HPLC Analysis Results (corrected for appropriate dilution factor)

Test 1 90% saturation concentration: Peak 1 = 41 mg/l (equates to 46 mg/l in filtrate), Peak 2 = 9 mg/l (equates to 10 mg/l in filtrate) and Peak 3 = 16 mg/l (equates to 18 mg/l in filtrate).

Test 2 90% saturation concentration: Peak 1 = 41 mg/l (equates to 46 mg/l in filtrate), Peak 2 = 9 mg/l (equates to 10 mg/l in filtrate) and Peak 3 = 16 mg/l (equates to 18 mg/l in filtrate).

Peak 1 retention time: 6.6 mins

Peak 2 retention time: 8.7 mins

Peak 3 retention time: 9.2 mins

Conclusions:
The surface tension of a 90% saturation concentration sample of test material was found to be 50.4 mN/m (mean). The test substance does not appear to be surface active i.e. surface tension <60 mN/m.
Executive summary:

The surface tension of the test substance was determined in accordance with the EU Testing Method A.5, using the plate method. The surface tension of a 90% saturation concentration sample of test material was found to be 50.4 mN/m (mean). The test substance does not appear to be surface active i.e. surface tension <60 mN/m.

Endpoint:
surface tension
Type of information:
migrated information: read-across from supporting substance (structural analogue or surrogate)
Adequacy of study:
supporting study
Study period:
2010
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
EU Method A.5 (Surface Tension)
Deviations:
no
GLP compliance:
no
Remarks:
Conducted in a GLP compliant laboratory but not as part of a formal GLP study.
Type of method:
plate method
Surface tension:
49.9 mN/m
Temp.:
25 °C
Conc.:
90 other: % of saturation concentration
Remarks on result:
other: Mean of two tests (Test 1 = 49.86 mN/m and test 2 = 49.97 mN/m)

No significant ageing of the test substance was observed.

HPLC Analysis Results (corrected for appropriate dilution factor)

Test 1 90% saturation concentration: Peak 1 = 36 mg/l (equates to 40 mg/l in filtrate) and Peak 2 = 55 mg/l (equates to 61 mg/l in filtrate)

Test 2 90% saturation concentration: Peak 1 = 41 mg/l (equates to 46 mg/l in filtrate) and Peak 2 = 65 mg/l (equates to 72 mg/l in filtrate).

Peak 1 retention time: 6.3 mins

Peak 2 retention time: 6.6 mins

Conclusions:
The surface tension of a 90% saturation concentration sample of test material was found to be 49.9 mN/m (mean). The test substance does not appear to be surface active i.e. surface tension <60 mN/m.
Executive summary:

The surface tension of the test substance was determined in accordance with the EU Testing Method A.5, using the plate method. The surface tension of a 90% saturation concentration sample of test material was found to be 49.9 mN/m (mean). The test substance does not appear to be surface active i.e. surface tension <60 mN/m.

Endpoint:
surface tension
Type of information:
experimental study
Adequacy of study:
supporting study
Study period:
2010
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
EU Method A.5 (Surface Tension)
Deviations:
no
GLP compliance:
no
Remarks:
Conducted in a GLP compliant laboratory but not as part of a formal GLP study.
Type of method:
plate method
Surface tension:
47.2 mN/m
Temp.:
25 °C
Conc.:
90 other: % of saturation concentration
Remarks on result:
other: Mean of two tests (test 1 = 47.31 mN/m and test 2 = 47.05 mN/m)

No significant ageing of the test substance was observed.

HPLC Analysis Results (corrected for appropriate dilution factor)

Test 1 90% saturation concentration: Peak 1 = 7 mg/l (equates to 8 mg/l in filtrate), Peak 2 = 9 mg/l (equates to 10 mg/l in filtrate) and Peak 3 = 6 mg/l (equates to 7 mg/l in filtrate).

Test 2 90% saturation concentration: Peak 1 = 8 mg/l (equates to 9 mg/l in filtrate), Peak 2 = 8 mg/l (equates to 9 mg/l in filtrate) and Peak 3 = 6 mg/l (equates to 7 mg/l in filtrate).

Peak 1 retention time: 9.8 mins

Peak 2 retention time: 14.1 mins

Peak 3 retention time: 19.9 mins

Conclusions:
The surface tension of a 90% saturation concentration sample of test material was found to be 47.2 mN/m (mean). The test substance does not appear to be surface active i.e. surface tension <60 mN/m.
Executive summary:

The surface tension of the test substance was determined in accordance with the EU Testing Method A.5, using the plate method and was reported as 47.2 mN/m (mean). The test substance does not appear to be surface active i.e. surface tension <60 mN/m.

Description of key information

The surface activity determined in the key study was 50.4 mN/m. The substance does not appear to be surface active i.e. surface tension <60 mN/m.

Key value for chemical safety assessment

Surface tension:
50.4

Additional information

Two studies were conducted on the registered substance to determine the surface tension of the substance, with an additional study conducted on the read-across substance BPA 2PO. All studies were conducted according to the EU Testing Method A. 5., and used the plate method. The key study on BPA 3PO gave a surface tension of 50.4 mN/m, the supporting study on the BPA 5PO gave a surface tension of 47.2 mN/m, and the read-across study on the BPA 2PO gave a surface tension of 49.9 mN/m. All the results are <60 mN/m which indicates that the substance is not likely to be surface active.