Bis[N-(2-hydroxyethyl)-N-methylglycinato-N,O,ON]copper

Surface tension

Administrative data

Endpoint:

surface tension

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2016-12-13

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

Test guideline 1

Qualifier:

according to guideline

Guideline:

OECD Guideline 115 (Surface Tension of Aqueous Solutions)

Version / remarks:

27 July 1995

Deviations:

no

Test guideline 2

Qualifier:

according to guideline

Guideline:

EU Method A.5 (Surface Tension)

Version / remarks:

31 May 2008

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

ring method

Test material

Test material information

Constituent 1

Reference substance name:

Bis[N-(2-hydroxyethyl)-N-methylglycinato-N,O,ON]copper

EC Number:

300-491-4

EC Name:

Bis[N-(2-hydroxyethyl)-N-methylglycinato-N,O,ON]copper

Cas Number:

93940-93-3

Molecular formula:

C10H20CuN2O6

IUPAC Name:

bis[N-(2-hydroxyethyl)-N-methylglycinato-N,O,ON]copper

Test material form:

solid: particulate/powder

Results and discussion

Surface tension

Key result

Surface tension:

72.1 mN/m

Temp.:

20.2 °C

Conc.:

1 g/L

Remarks on result:

other: corrected with a calibration factor 1.0218

Any other information on results incl. tables

The calibration data in water allowed to determine the calibration factor. Since the nominal surface tension is 72.75 mN/m and the determined surface tension is 71.2, the calibration factor is 1.0218.

The test was performed twice at a temperature of 20.2 °C (test 1) and 20.2 °C (test 2):

Test no.	number	surface tension (measured) (mN/m)
1	1	70.3
	2	70.3
	3	70.2
	4	70.2
	5	70.2
	mean	70.2
2	1	71.0
	2	71.0
	3	71.0
	4	71.0
	5	70.9
	mean	71.0

The measured surface tension was corrected with a calibration factor of 1.0218. This results in following determinations:

Test no.	mean surface tension (measured) (mN/m)	corrected mean surface tension (mN/m)
1	70.2	71.7
2	71.0	72.5
Mean	70.6	72.1

Applicant's summary and conclusion

Conclusions:

The surface tension of a 1 g/L dilution of test item in water was determined to be 72.1 mN/m at 20.2 °C. As a result, the substance is not surface active.

Executive summary:

The aim of the study was the determination of the surface tension of the test item in water at 20 °C ± 0.5 °C according to EC method A.5 and OECD 115 using ring method. The test was performed twice.

The surface tension of a 1 g/L dilution of test item in water was determined to be 72.1 mN/m at 20.2 °C. The substance is hence not surface active.