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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Melting point / freezing point

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Administrative data

Link to relevant study record(s)

Reference
Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
From May 26, 2010 to August 19, 2010
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Study conducted according to OECD 102 and EU A.1 guideline, under GLP without deviation and with certificate of analysis included.
Reason / purpose for cross-reference:
reference to same study
Reason / purpose for cross-reference:
reference to other study
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Deviations:
no
Qualifier:
according to guideline
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
capillary method
Melting / freezing pt.:
< -80 °C
Atm. press.:
1 atm
Decomposition:
no
Sublimation:
no

The test item was filled into glass vessels and stored at –80 and –20°C.

Room Temperature

5°C

-20°C

-80°C

liquid

liquid

liquid

liquid

After six days of storage in the deep freezer, the test item was still liquid. Therefore no main study was performed and the determination was finished.

Conclusions:
No melting point or range could be detected.
The melting point or range of the test item is < -80 °C (193.15 K).
Executive summary:

As the test item was still not frozen after six days of storage in a deep freezer at -80°C, no melting point or range could be detected.

Therefore the melting point or range of the test item DIMETHYLOCTADIENE should be stated as < -80°C (193.15 K).

No observations were made which might cause doubts on the validity of the study outcome. Therefore, the result of the study is considered valid.

Description of key information

No melting point or range could be detected.
The melting point or range of the test item is < -80 °C (193.15 K).

Key value for chemical safety assessment

Additional information

Key study conducted according to OECD 102 and EU A.1 guideline, under GLP without deviation and with certificate of analysis included. Therefore the result of the key study is proposed as end point value.