Aluminum, benzoate C16-18 fatty acids complexes - high aluminium

Surface tension

Administrative data

Endpoint:

surface tension

Type of information:

experimental study

Adequacy of study:

supporting study

Study period:

12 November 2012 to 12 December 2012

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: GLP compliant, guideline study, available as an unpublished report.

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2013

Report date:

2013

Materials and methods

Test guideline

Test guideline 1

Qualifier:

according to guideline

Guideline:

OECD Guideline 115 (Surface Tension of Aqueous Solutions)

Deviations:

yes

Remarks:

A reduced ring circumference of 4 cm was used, whereas the guidelines specify 6 cm. This deviation has been considered not to have affected the integrity of the study.

Test guideline 2

Qualifier:

according to guideline

Guideline:

EU Method A.5 (Surface Tension)

Deviations:

yes

Remarks:

A reduced ring circumference of 4 cm was used, whereas the guidelines specify 6 cm. This deviation has been considered not to have affected the integrity of the study.

GLP compliance:

yes (incl. QA statement)

Type of method:

ring method

Test material

Test material information

Constituent 1

Reference substance name:

Aluminum, benzoate C16-18-fatty acids complexes

EC Number:

303-385-6

EC Name:

Aluminum, benzoate C16-18-fatty acids complexes

Cas Number:

94166-87-7

Molecular formula:

C23H37AlO5, C25H41AlO5

IUPAC Name:

Aluminum, benzoate C16-18-fatty acids complexes

Test material form:

other: solid

Details on test material:

- Physical state: Pale Yellow Solid
- Purity: Not applicable - UVCB
- Substance identity: Aluminum, benzoate C16-18-fatty acids complexes
- Batch number: 11074091 + Benzoic acid
- Carbon Content: 65.1%
- Analysis code: A118
- Date recieved: 07 June 2012
- Expiration date: 01 July 2013
- Storage of test material: Room temperature in the dark

Results and discussion

Surface tension

Surface tension:

72.6 mN/m

Temp.:

20 °C

Remarks on result:

other: Duplicate values for 90% saturated aqueous solutions at 20.0 ± 0.5 °C.

Any other information on results incl. tables

Calibration factor

Sample 1                     =                   1.002

Sample 2                     =                   1.003

Surface tension          =                    reading x calibration factor
Sample 1                   =                    72.6 mN/m
Sample 2                   =                    72.6 mN/m
Temperature   :                                20.0 ± 0.5 ºC

pH of sample solution:                     Sample 1 = 4.7
                                                        Sample 2 = 4.7

Since the substances showing a surface tension greater than 60 mN/m it was considered not to be surface active. 

Applicant's summary and conclusion

Conclusions:

The surface tension of duplicate 90% saturated aqueous solutions of aluminum, benzoate C16-18-fatty acids complexes has been determined to be 72.6 mN/m at 20.0 ± 0.5 °C. Aluminum, benzoate C16-18-fatty acids complexes was considered not to be surface active.

Executive summary:

The surface tension of duplicate 90% saturated aqueous solutions of aluminum, benzoate C16-18-fatty acids complexes has been determined to be 72.6 mN/m at 20.0 ± 0.5 °C. Aluminum, benzoate C16-18-fatty acids complexes was considered not to be surface active.The surface tension of the test material was determined in a GLP-compliant ring balance test following OECD guideline 115 (Harlan 2013). The study is considered to be reliable and relevant for use for this endpoint.