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

Flammability

Administrative data

Endpoint:

substances / mixtures which in contact with water emit flammable gases

Data waiving:

study scientifically not necessary / other information available

Justification for data waiving:

the study does not need to be conducted because the experience in production or handling shows that the substance does not react with water, e.g. the substance is manufactured with water or washed with water

Cross-reference

Reason / purpose for cross-reference:

reference to other study

Reference

Endpoint:

vapour pressure

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

Qualifier:

according to guideline

Guideline:

EU Method A.4 (Vapour Pressure)

Version / remarks:

There were no deviations from standard operating procedures (SOPs)

Deviations:

no

Qualifier:

according to guideline

Guideline:

OECD Guideline 104 (Vapour Pressure Curve)

Version / remarks:

There were no deviations from standard operating procedures (SOPs)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

effusion method: isothermal thermogravimetry

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.

Key result

Test no.:

#1

Temp.:

20 °C

Vapour pressure:

32 Pa

Test no.:

#2

Temp.:

25 °C

Vapour pressure:

59 Pa

Conclusions:

The isothermal TGA effusion method was applied for the determination of the vapour pressure of Gyrane.
The vapour pressure of the test substance at 20°C (293K) was 32 Pa and at 25°C (298K) was 59 Pa.

Executive summary:

The isothermal TGA effusion method was applied for the determination of the vapour pressure of Gyrane. The vapour pressure of the test substance at 20°C (293K) was 32 Pa and at 25°C (298K) was 59 Pa.