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Administrative data

Endpoint:
surface tension
Type of information:
experimental study
Adequacy of study:
key study
Study period:
11 September 2017 - 20 October 2017
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 guidelineopen allclose all
Qualifier:
according to guideline
Guideline:
EU Method A.5 (Surface Tension)
Version / remarks:
2008
Deviations:
no
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

Constituent 1
Chemical structure
Reference substance name:
(2S)-5-methoxy-N-propyl-1,2,3,4-tetrahydronaphthalen-2-aminium chloride
EC Number:
695-797-0
Cas Number:
93601-86-6
Molecular formula:
C14H21NO.HCl
IUPAC Name:
(2S)-5-methoxy-N-propyl-1,2,3,4-tetrahydronaphthalen-2-aminium chloride
Test material form:
solid: particulate/powder
Details on test material:
- Appearance: White to off-white powder
- Storage condition of test material: At room temperature

Results and discussion

Surface tension
Key result
Surface tension:
68.7 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 (1)

mean (2)

1

15

66.1

68.2

68.7

2

16

68.0

 

 

3

17

68.1

 

 

4

18

68.3

 

 

5

19

68.4

 

 

6

20

68.3

 

 

(1) Mean calculated from measurements 2 to 6, after equilibrium was reached.

(2) Mean multiplied by the calibration factor and Harkins-Jordan corrected.

Applicant's summary and conclusion

Conclusions:
The surface tension of an aqueous substance solution at 1 g/L was determined to be 68.7 mN/m (at 20°C).

Executive summary:

Using the OECD harmonized ring method in a GLP study according to EC A.5 and OECD 115, the surface tension of an aqueous substance solution at 1 g/L was determined to be 68.7 mN/m (at 20°C). According to the EC A.5 guideline the substance is not surface active.