Reaction mass of (3R)-3-methyl-5-[(1R,3R)-2,2,3-trimethylcyclopentyl]pentan-2-one and (3S)-3-methyl-5-[(1R,3R)-2,2,3-trimethylcyclopentyl]pentan-2-one

Surface tension

Administrative data

Endpoint:

surface tension

Type of information:

experimental study

Adequacy of study:

key study

Study period:

Experimental Starting Date: 10 June 2014 Experimental Completion Date: 20 December 2014

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: see 'Remark'

Remarks:

Study conducted in compliance with agreed protocols, with no or minor deviations from standard test guidelines and/or minor methodological deficiencies, which do not affect the quality of the relevant results. The study report was conclusive, done to a valid guideline and the study was conducted under GLP conditions.

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2015

Report date:

2015

Materials and methods

Test guideline

Test guideline 1

Qualifier:

according to guideline

Guideline:

EU Method A.5 (Surface Tension)

Deviations:

yes

Remarks:

please see Discussion below

Test guideline 2

Qualifier:

according to guideline

Guideline:

OECD Guideline 115 (Surface Tension of Aqueous Solutions)

Deviations:

yes

Remarks:

please see Discussion below

GLP compliance:

yes

Type of method:

ring method

Test material

Test material information

Constituent 1

Reference substance name:

NACET00502

IUPAC Name:

NACET00502

Constituent 2

Reference substance name:

119464-63-0 (planar)

IUPAC Name:

119464-63-0 (planar)

Test material form:

other: Clear to Pale Yellow Liquid

Details on test material:

Common/Commercial Name: NACET00502
Chemical Name: 3-methyl-5-((1R)-2,2,3-trimethylcyclopentyl)pentane-2-one
CAS Number: 119464-63-0 (planar)
Appearance/Physical State: Clear to Pale Yellow Liquid
Batch: S-13-11-1
Purity: 98.5%
Expiry Date: 24 December 2015
Storage Conditions: Room temperature in the dark

Results and discussion

Surface tension

Surface tension:

70.8 mN/m

Temp.:

21.3 °C

Any other information on results incl. tables

Results

The readings, times and temperatures for the sample solutions are shown in the following tables:

 

Table 3.7– Sample 1

 

Time (mins)	Reading (mN/m)	Temperature (°C)
212	71.0	21.4
224	71.0	21.4
233	71.0	21.4
242	71.0	21.4
264	71.0	21.6

 

Table 3.8– Sample 2

 

Time (mins)	Reading (mN/m)	Temperature (°C)
302	70.5	21.2
308	70.5	21.2
313	70.5	21.2
319	70.5	21.2
324	70.5	21.2

 

Mean Sample 1 result:71.0 mN/m                 pH of Sample 1:         6.4

Mean Sample 2 result:70.5 mN/m                 pH of Sample 2:         6.4

Overall result:                         70.8±1.0 mN/m

Overall temperature:               21.3 ± 0.5 ºC

Applicant's summary and conclusion

Conclusions:

The surface tension of a 90 % saturated solution of test item in water has been determined to be 70.8 ± 1.0 mN/m at 21.3 ± 0.5 °C. The test item was considered to be not surface-active.

Executive summary:

The determination was carried out by a ring method, using a procedure designed to be compatible with that specified in Method A5 Surface Tension of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 115 of the OECD Guidelines for the Testing of Chemicals, 27 July 1995.

Apparatus:                  White Electrical Institute Co. Ltd.Model “OS”torsion balance for surface and interfacial tension

measurements. The measuring body consisted of a 4 cm circumference platinum (Du Nouy) ring.

Purified Water:          Reverse osmosis water with a resistivity of greater than 15 MΩ.

Conclusion

The surface tension of a 90 % saturated solution of test item in water has been determined to be 70.8±1.0 mN/m at 21.3 ± 0.5 °C. The test item was considered to be not surface-active.