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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Surface tension

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Administrative data

Link to relevant study record(s)

Reference
Endpoint:
surface tension
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2018-07-10 - 2018-12-03
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Reason / purpose for cross-reference:
reference to same study
Reason / purpose for cross-reference:
reference to same study
Reason / purpose for cross-reference:
reference to same study
Qualifier:
according to guideline
Guideline:
OECD Guideline 115 (Surface Tension of Aqueous Solutions)
Version / remarks:
1995
GLP compliance:
yes (incl. QA statement)
Remarks:
2017-03-23
Type of method:
ring method
Specific details on test material used for the study:
Batch: WR 180327A
Expiry date: March 2019
Key result
Surface tension:
63.9 mN/m
Temp.:
20 °C
Conc.:
1 g/L

Mean of three assays

Verification with distilled water

The mean surface tension of distilled water was 72.1 mN/m at 20.0 °C, measurement vessel was considered to be clean and ready for use.

Reference materials

Identification

Dodecylbenzenesulfonic acid, sodium salt

Last validation of the test

10 November 2017*

Periodicity of validation (in months)

12

Results

33.1 mN/m ± 0.1 mN/m

Theoretical value

33.0 mN/m ± 1.7 mN/m

Conformity

Yes

*A tolerance of 10% is accepted to perform the next validation.

 

Identification

Pure isopropanol

Last validation of the test

18 October 2018

Periodicity of validation (in months)

12

Results

20.8 mN/m ± 0.1 mN/m

Theoretical value

21.7 mN/m ± 1.1 mN/m

Conformity

Yes

Conclusions:
The mean surface tension of the test item diluted at 1 g/L in distilled water at 20.0 °C was 63.9 mN/m.
The test item was not considered as surface-active in the experimental conditions used.
Executive summary:

Using the ring method, the surface tension of a 1 g/L Tetrabutylphosphonium chloride solution at 20°C has been determined as 63.9 mN/m. The substance is not surface active according to the criterium in the EC A.5 guideline.

Description of key information

Using the ring method, the surface tension of a 1 g/L Tetrabutylphosphonium chloride solution at 20°C has been determined as 63.9 mN/m. The substance is not surface active according to the criterium in the EC A.5 guideline.

Key value for chemical safety assessment

Surface tension:
63.9
in mN/m at 20°C and concentration in mg/L:
1 000

Additional information

The substance is not surface active according to the criterium in the EC A.5 guideline.