3,7-dimethyloct-6-en-1-yn-3-ol

Melting point / freezing point

Administrative data

Endpoint:

melting point/freezing point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

from May 04, 2011 to June 21, 2011

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: see 'Remark'

Remarks:

Study conducted in compliance with agreed protocols, with no or minor deviations from standard test guidelines and/or minor methodological deficiencies, which do not affect the quality of the relevant results. The study report was conclusive, done to a valid guideline and the study was conducted under GLP conditions.

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2011

Report date:

2011

Materials and methods

Test guideline

Test guideline 1

Qualifier:

according to guideline

Guideline:

EU Method A.1 (Melting / Freezing Temperature)

Deviations:

no

Test guideline 2

Qualifier:

according to guideline

Guideline:

OECD Guideline 102 (Melting point / Melting Range)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Type of method:

method to determine freezing temperature

Test material

Test material information

Constituent 1

Reference substance name:

3,7-dimethyloct-6-en-1-yn-3-ol

EC Number:

249-482-6

EC Name:

3,7-dimethyloct-6-en-1-yn-3-ol

Cas Number:

29171-20-8

Molecular formula:

C10H16O

IUPAC Name:

3,7-dimethyloct-6-en-1-yn-3-ol

Details on test material:

Identification: Dehydrolinalool
Batch Number: UU11034847
Purity: 99.0%
Expiry Date: March 01, 2013
Storage Conditions: At room temperature (<25 °C), dry conditions and protected from light
Storage Conditions at Harlan Laboratories:
At room temperature at 20 °C ± 5 °C

Results and discussion

Melting / freezing point

Melting / freezing pt.:

< -72 °C

Decomposition:

no

Sublimation:

no

Remarks on result:

other: No atmospheric pressure was recorded for this endpoint.

Any other information on results incl. tables

A preliminary test was performed to check the approximate freezing temperature of Dehydrolinalool. The test item was stored 24 hours at -25 °C in a freezer. As the sample was not frozen after this time the freezing temperature of Dehydrolinalool must be below -25 °C.

 

During the main tests, about 3 mL and 4 mL, respectively, of the test item placed in a small test tube were cooled down from room temperature to about -72 °C using a dry ice and acetone mixture. The test item increased in viscosity but was still movable. Therefore, no clear freezing point could be determined within the temperature range between 20 °C and ¿72 °C.

Applicant's summary and conclusion

Conclusions:

The aim of this study was to determine the freezing point/range of Dehydrolinalool.

The test item did not freeze under the conditions of the test.

Executive summary:

 

Dehydrolinalool did not freeze under the conditions of this test (temperature range investigated: 20 °C to -72 °C). Therefore, the freezing point might be below -72 °C.