Reaction mass of 6-butyl-3,6-dihydro-2,4-dimethyl-2H-pyran and 2-butyl-3,6-dihydro-4,6-dimethyl-2H-pyran and 2-butyltetrahydro-6-methyl-4-methylene-2H-pyran

Surface tension

Administrative data

Endpoint:

surface tension

Type of information:

experimental study

Adequacy of study:

key study

Study period:

05 January 2015 - 03 March 2015

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2015

Report date:

2015

Materials and methods

Test guideline

Test guideline 1

Qualifier:

according to guideline

Guideline:

OECD Guideline 115 (Surface Tension of Aqueous Solutions)

Version / remarks:

There were no deviations from standard operating procedures (SOPs)

Deviations:

no

Test guideline 2

Qualifier:

according to guideline

Guideline:

EU Method A.5 (Surface Tension)

Version / remarks:

There were no deviations from standard operating procedures (SOPs)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

ring method

Test material

Test material information

Constituent 1

Reference substance name:

2-butyl-3,6-dihydro-4,6-dimethyl-2H-pyran

EC Number:

246-099-6

EC Name:

2-butyl-3,6-dihydro-4,6-dimethyl-2H-pyran

Cas Number:

24237-01-2

Molecular formula:

C11H20O

IUPAC Name:

2-butyl-4,6-dimethyl-3,6-dihydro-2H-pyran

Constituent 2

Reference substance name:

6-butyl-3,6-dihydro-2,4-dimethyl-2H-pyran

EC Number:

246-098-0

EC Name:

6-butyl-3,6-dihydro-2,4-dimethyl-2H-pyran

Cas Number:

24237-00-1

Molecular formula:

C11H20O

IUPAC Name:

6-butyl-2,4-dimethyl-3,6-dihydro-2H-pyran

Constituent 3

Reference substance name:

2-butyltetrahydro-6-methyl-4-methylene-2H-pyran

EC Number:

246-101-5

EC Name:

2-butyltetrahydro-6-methyl-4-methylene-2H-pyran

Cas Number:

24237-02-3

Molecular formula:

C11H20O

IUPAC Name:

2-butyl-6-methyl-4-methylenetetrahydro-2H-pyran

Specific details on test material used for the study:

Material Identification (as stated in the report) : Gyrane
Appearance: Colourless to pale yellow liquid
Batch: SC00008777

Please note that although the substance is described in the report with the IUPAC name: 6-Butyl-2,4-dimethyl-3,6-dihydro-2H-pyran related to the CAS number 24237-00-1, EC#246-098-0, recent analytical data had been determined the substance to be a multi-constituent described as Reaction mass of 6-butyl-3,6-dihydro-2,4-dimethyl-2H-pyran and 2-butyl-3,6-dihydro-4,6-dimethyl-2H-pyran and 2-butyltetrahydro-6-methyl-4-methylene-2H-pyran.
As the chemical manufacturing process has not changed since the report was written, the recent analytical information is relevant to the batch SC00008777 which was tested.

Results and discussion

Surface tension

Key result

Surface tension:

67.5 mN/m

Temp.:

20 °C

Conc.:

0.049 g/L

Remarks on result:

other: Conc: 90% of the test substance saturation solubility in water

Applicant's summary and conclusion

Conclusions:

The OECD harmonized ring method was applied for the determination of the surface tension of Gyrane.
The surface tension of a test solution at 90% of the test substance saturation solubility in water and at 20°C was 67.5 mN/m. According to this, the test substance is considered not to be surface active.

Executive summary:

The OECD harmonized ring method was applied for the determination of the surface tension of Gyrane. The surface tension of a test solution at 90% of the test substance saturation solubility in water and at 20°C was 67.5 mN/m. According to this, the test substance is considered not to be surface active.