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Surface tension

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Reference
Endpoint:
surface tension
Type of information:
experimental study
Adequacy of study:
key study
Study period:
This study was conducted between 01 June 2017 and 21 October 2017
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: The study is considered to be a reliability 1 as it has been conducted according to OECD 115 using the ring method and in compliance with GLP.
Qualifier:
according to
Guideline:
OECD Guideline 115 (Surface Tension of Aqueous Solutions)
Qualifier:
according to
Guideline:
EU Method A.5 (Surface Tension)
Version / remarks:
EC No. 440/2008 of 28 May 2008
Deviations:
no
GLP compliance:
yes (incl. certificate)
Type of method:
ring method
Specific details on test material used for the study:
Information as provided by the Sponsor.
Identification: 1,3-Benzenedimethanamine, reaction products with glycidyl tolyl ether
Appearance/Physical state: clear, colorless, viscous liquid
Batch: WA 1508
Purity: 100% UVCB
Expiry date: 01 January 2021
Storage conditions: room temperature, in the dark
Key result
Surface tension:
55.8 mN/m
Temp.:
20 °C
Conc.:
90 other: % Saturated solution

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

  Sample 1

Time (mins)

Reading (mN/m)

Temperature (°C)

70

55.0

20.0

86

55.5

20.0

96

56.0

20.0

106

56.0

20.0

116

55.5

20.2

125

56.0

20.2


  Sample 2

Time (mins)

Reading (mN/m)

Temperature (°C)

142

56.5

20.2

195

56.0

20.2

206

56.0

20.2

216

55.5

20.2

226

55.5

20.2

237

56.0

20.2

Mean Sample 1 result:          55.8mN/m*               

Mean Sample 2 result:          55.8mN/m*

Mean result                :          55.8mN/m

pH of Sample 1         :          9.9

pH of Sample 2         :          9.9

Overall temperature   :          20.0 ± 0.5ºC


* Final five sample solution surface tension value readings considered as a constant plateau and used in the calculation of the mean.

Conclusions:
The mean surface tension of a duplicate solutions of test item in water, prepared at 90 % saturated concentration, has been determined to be 55.8 mN/m at 20.0 ± 0.5 °C. The test item was considered to be surface-active.
Executive summary:

The general physico-chemical properties of 1,3-Benzenedimethanamine, reaction products with glycidyl tolyl ether have been determined. 

Surface Tension. 55.8mN/m (mean value from duplicate 90 % saturated solutions of test item in water) at 20.0 ± 0.5 °C,determined using a ring method designed to be compatible with Method A5 Surface Tension of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 115 of the OECD Guidelines for Testing of Chemicals, 27 July 1995. The test item was considered to be surface-active.

Description of key information

Surface Tension. 55.8 mN/m (mean value from duplicate 90 % saturated solutions of test item in water) at 20.0 ± 0.5 °C

Key value for chemical safety assessment

Surface tension:
55.8

Additional information

Surface Tension. 55.8 mN/m (mean value from duplicate 90 % saturated solutions of test item in water) at 20.0 ± 0.5 °C, determined using a ring method designed to be compatible with Method A5 Surface Tension of Commission Regulation (EC) No 440/2008 of 30 May 2008 and Method 115 of the OECD Guidelines for Testing of Chemicals, 27 July 1995. The test item was considered to be surface-active.