Tetrabutylphosphonium chloride

Surface tension

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.