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

Density

Administrative data

Endpoint:

relative density

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:

EU Method A.3 (Relative Density)

Version / remarks:

There were no deviations from standard operating procedures (SOPs)

Deviations:

no

Test guideline 2

Qualifier:

according to guideline

Guideline:

OECD Guideline 109 (Density of Liquids and Solids)

Version / remarks:

There were no deviations from standard operating procedures (SOPs)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

pycnometer 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

Density

Key result

Type:

relative density

Density:

0.86

Temp.:

20 °C

Any other information on results incl. tables

Table 5 shows the determined volume of the pycnometer. The results of the tests on the determination of the density of the test substance are given in Table 6. The individual measurements were obtained with a deviation of ≤ 0.01 g/cm3. According to the guideline, the density of the test substance is given as the mean value.

Table 5 Determination of the volume of the pycnometer

	Test 1	Test 2	Mean
Mass empty pycnometer (A)	30.4743 g	30.4741 g	30.4742 g
Mass pycnometer with water (B)	40.1117 g	40.1114 g
Volume of the pycnometer	9.6548 cm3	9.6547 cm3	9.6548 cm3

Table 6 Density of the test substance

	Test 1	Test 2	Mean
Mass pycnometer with test substance (C)	38.7811 g	38.7775 g
Density	0.8604 g/cm3	0.8600 g/cm3	0.860 g/cm3

Applicant's summary and conclusion

Conclusions:

A pycnometer was used for the determination of the density and relative density of Gyrane.
The density of the test substance at 20ºC was 0.860 g/cm3 (0.860 × 103 kg/m3).
The relative density was 0.860.

Executive summary:

A pycnometer was used for the determination of the density and relative density of Gyrane. The density of the test substance at 20ºC was 0.860 g/cm3 (0.860 × 103 kg/m3). The relative density was 0.860.