1-Decanaminium, N-decyl-N,N-dimethyl-, hexanedioate (2:1)

Surface tension

Administrative data

Endpoint:

surface tension

Type of information:

experimental study

Adequacy of study:

key study

Study period:

From 18 November 2016 to 23 March 2017

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

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)

Version / remarks:

2008

Deviations:

no

Test guideline 2

Qualifier:

according to guideline

Guideline:

OECD Guideline 115 (Surface Tension of Aqueous Solutions)

Version / remarks:

1995

Deviations:

no

GLP compliance:

yes

Type of method:

OECD harmonised ring method

Test material

Test material information

Constituent 1

Reference substance name:

Reference substance 001

Cas Number:

210420-85-2

Constituent 2

Reference substance name:

N-methyldidecylamine

EC Number:

230-990-1

EC Name:

N-methyldidecylamine

Cas Number:

7396-58-9

Molecular formula:

C21H45N

IUPAC Name:

N-decyl-N-methyldecan-1-amine

Constituent 3

Reference substance name:

Water

EC Number:

231-791-2

EC Name:

Water

Cas Number:

7732-18-5

Molecular formula:

H2O

IUPAC Name:

Dihydrogen oxide

impurity 1

Reference substance name:

Unknown impurities

Molecular formula:

Not available

IUPAC Name:

Unknown impurities

Test material form:

solid

Details on test material:

- Appearance: Slightly yellow gel
- Storage conditions: At room temperature; container flushed with nitrogen

Results and discussion

Surface tension

Key result

Surface tension:

32.3 mN/m

Temp.:

20 °C

Conc.:

1 g/L

Any other information on results incl. tables

Table: Surface tension measurements

 

Measurement	Time passed after transfer test solution to test vessel [minutes]	Surface tension [mN/m]
		individual	mean	mean multiplied by Fb and Harkins-Jordan corrected value
1	15	35.0	34.9	32.3
2	16	34.9
3	17	34.8
4	18	34.7
5	19	35.1

Applicant's summary and conclusion

Conclusions:

The surface tension at 20°C of a 1 g/L aqueous solution of the substance was determined to be 32.3 mN/m.

Executive summary:

Using the OECD harmonized ring method in a GLP study according to EC A.5 and OECD 115, the surface tension at 20°C of an aqueous solution of the substance at 1 g/L was determined to be 32.3 mN/m. According to the EC A.5 guideline the substance is surface active.