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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:
16-26 June, 2014
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: A modern GLP study conducted according the appropriate guidelines.
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:
method to determine freezing temperature
Key result
Melting / freezing pt.:
< -20 °C
Decomposition:
no
Sublimation:
no

No further data

Conclusions:
No freezing was observed for Lime Oxide down to a temperature of - 20.0 °C (253 °K).
Executive summary:

The freezing point of Lime Oxide was measured according to OECD Guideline No. 102 (method of the freezing temperature) and Method A1 Melting/Freezing Temperature of Commission Regulation (EC) No 440/2008.

No freezing was observed for Lime Oxide down to a temperature of - 20.0 °C (253 °K).

Description of key information

Key value for chemical safety assessment

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

Additional information

The freezing point of Lime Oxide was measured according to OECD Guideline No. 102 (method of the freezing temperature) and Method A1 Melting/Freezing Temperature of Commission Regulation (EC) No 440/2008. No freezing was observed for Lime Oxide down to a temperature of - 20.0 °C (253 °K).

For the purposes of environmental exposure assessment, the melting point is required for solids to estimate sub-cooled liquid vapour pressure. Given that no freezing was observed for Lime Oxide down to a temperature of -20 °C, it is assumed that all components of Lime Oxide would be in a liquid form in the environment. Hence the value of -20'C has been assigned to the two assignment entities being used for environmental exposure and risk assessment.

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