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Physical & Chemical properties

Melting point / freezing point

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Reference
Endpoint:
melting point/freezing point
Type of information:
read-across from supporting substance (structural analogue or surrogate)
Adequacy of study:
key study
Study period:
1996
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: Read-across from an analogue substance for which a study conducted with a method equivalent to a guideline study (Klimisch 2) is available.
Justification for type of information:
REPORTING FORMAT FOR THE ANALOGUE APPROACH
See cross-reference to justification of read-across.
Reason / purpose:
read-across source
Reason / purpose:
read-across: supporting information
Key result
Melting / freezing pt.:
199.18 K
Remarks on result:
other: Based on a read-across from an analogue substance.
Remarks:
Adiabatic calorimetry
Key result
Melting / freezing pt.:
199.5 K
Remarks on result:
other: Based on a read-across from an analogue substance.
Remarks:
Differential scanning calorimetry
Conclusions:
Based on the read-across from the analogue substance d-limonene, l-limonene is concluded to have a melting temperature of 199.5 ± 0.5 K (DSC) and 199.18 ± 0.05 K (adiabatic calorimetry).
Executive summary:

A study was performed similarly to OECD Guideline 102 to determine the melting point of d-limonene using differential scanning calorimetry (DSC) and adiabatic calorimetry. Based on the read-across from the analogue substance d-limonene, l-limonene is concluded to have a melting temperature of 199.5 ± 0.5 K (DSC) and  199.18 ± 0.05 K (adiabatic calorimetry).

Description of key information

Key study: Read-across from analogue substance. Test method OECD 102. No data on GLP. Melting point of l-limonene is concluded to be -74 °C (199 K).

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
-74 °C

Additional information

The key value is read-across to the enantiomer d-limonene using DSC and adiabatic calorimetry with accurate results of melting point (199.5 K and 199.18 K) and is supported by similar values (-74°C) from secondary literature on d-limonene and l-limonene.