Amines, C16-18-(even numbered, saturated and unsaturated) alkyl, O,O-di-Bu phosphorothioates

Surface tension

Administrative data

Endpoint:

surface tension

Type of information:

experimental study

Adequacy of study:

key study

Study period:

Experimental starting date: 28 April 2016 Experimental completion date: 20 April 2017

Reliability:

1 (reliable without restriction)

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2017

Report date:

2017

Materials and methods

Test guideline

Test guideline 1

Qualifier:

according to guideline

Guideline:

EU Method A.5 (Surface Tension)

Deviations:

no

Test guideline 2

Qualifier:

according to guideline

Guideline:

OECD Guideline 115 (Surface Tension of Aqueous Solutions)

Deviations:

no

GLP compliance:

yes

Type of method:

ring method

Test material

Test material information

Constituent 1

Reference substance name:

Amines, C16-18-(even numbered, saturated and unsaturated) alkyl, O,O-di-Bu phosphorothioates

Molecular formula:

Not applicable - UVCB

IUPAC Name:

Amines, C16-18-(even numbered, saturated and unsaturated) alkyl, O,O-di-Bu phosphorothioates

Constituent 2

Reference substance name:

C16-18-(even numbered, saturated and unsaturated)-alkylamines

EC Number:

627-034-4

Cas Number:

1213789-63-9

Molecular formula:

R-NH2 R = alkyl mainly C16-18-(even numbered, saturated and unsaturated)-alkyl

IUPAC Name:

C16-18-(even numbered, saturated and unsaturated)-alkylamines

Test material form:

liquid

Specific details on test material used for the study:

Information as provided by the Sponsor. The Certificate of Analysis provided by the Sponsor is presented as Annex 1 (Please see Attachment Section of this Summary).

Identification: X-19574
Appearance/Physical state: Amber colored viscous liquid
Batch: X-19574-00-00
Purity: 100% (UVCB)
Expiry date: 01 June 2017
Storage conditions: Room temperature, in the dark

Results and discussion

Surface tension

Key result

Surface tension:

37.9 mN/m

Temp.:

21.5 °C

Conc.:

1.006 g/L

Any other information on results incl. tables

Results

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

Sample 1

Time (mins)	Reading (mN/m)	Temperature (°C)
75	36.0	21.4
87	36.5	21.4
100	36.0	21.4
115	36.0	21.4
132	36.5	21.6

Sample 2

Time (mins)	Reading (mN/m)	Temperature (°C)
155	39.5	21.6
175	39.5	21.8
185	39.5	21.6
198	40.0	21.6
214	39.5	21.6

Mean Sample 1 result :          36.2 mN/m                 pH of Sample 1 :        5.6

Mean Sample 2 result :          39.6 mN/m                 pH of Sample 2 :        4.8

Mean result                :          37.9 mN/m

Temperature               :          21.5 ± 0.5 ºC

 

Applicant's summary and conclusion

Conclusions:

The mean surface tension of duplicate 90 % saturated solutions of test item in water has been determined to be 37.9 mN/m at 21.5 ± 0.5 °C. The test item was considered to be surface-active.

Executive summary:

The determination was carried out by a ring method, using a procedure designed to be compatible with Method A.5 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.

Conclusion

The mean surface tension of duplicate 90 % saturated solutions of test item in water has been determined to be 37.9 mN/m at 21.5 ± 0.5 °C. The test item was considered to be surface-active.