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Physical & Chemical properties

Melting point / freezing point

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Reference
Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
19 April 2017
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Study performed according to international guidelines but not under GLP and with some lack of details.
Reason / purpose for cross-reference:
reference to other study
Reason / purpose for cross-reference:
reference to same study
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Deviations:
not specified
Qualifier:
according to guideline
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Deviations:
not specified
GLP compliance:
no
Type of method:
method to determine freezing temperature
Key result
Melting / freezing pt.:
< -20 °C
Atm. press.:
ca. 1 atm
Decomposition:
no
Sublimation:
no

After twelve hours of storage in a freezer at - 20°C the test item was still liquid.

According to Annex VII of REACH, the study does not need to be conducted below a lower limit of - 20°C. Therefore no main study was performed and the determination was terminated.

Conclusions:
According to guideline OECD 102 and method EU A.1, no melting point of substance REACTION MASS OF 2,6,6-TRIMETHYL-1-OXASPIRO[2.5]OCT-5-ENE AND 4-ISOPROPYLIDENE-1-METHYLCYCLOHEXENE was observed from - 20°C.
Executive summary:

The purpose of the study was to determine the Melting/Freezing point of REACTION MASS OF 2,2,6-TRIMETHYL-1-OXASPIRO[2.5]OCT-5-ENE AND 4-ISOPROPYLIDENE-1-METHYLCYCLOHEXENE.

The determination of the melting point was performed in accordance with Regulation (EC) No 440/2008, method A.1 ''Melting/Freezing Temperature'' and OECD Guideline No 102 ''Melting Point/Melting Range''.

In a preliminary study, the test item was still not frozen after twelve hours of storage in a freezer at - 20°C. According to Annex VII of REACH, the study does not need to be conducted below a lower limit of -20°C. Therefore the determination was terminated.

The Melting/Freezing point of REACTION MASS OF 2,2,6-TRIMETHYL-1-OXASPIRO[2.5]OCT-5-ENE AND 4-ISOPROPYLIDENE-1-METHYLCYLOHEXENE should be stated as < - 20°C.

Description of key information

Melting point of substance REACTION MASS OF 2,2,6-TRIMETHYL-1-OXASPIRO[2.5]OCT-5-ENE AND 4-ISOPROPYLIDENE-1-METHYLCYCLOHEXENE is < -20°C.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
-20 °C

Additional information

Key study conducted according to the OECD 102 Guideline and the EU A.1 method, not under GLP, with some lack of details but with certificate of analysis included. Therefore, a reliability of 2 is assigned and the result of this key study is proposed as the end point value.