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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:
From 08 Mar., 2010 to 03 May, 2010
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline 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
Qualifier:
according to guideline
Guideline:
EPA OPPTS 830.7200 (Melting Point / Melting Range)
Deviations:
no
Qualifier:
according to guideline
Guideline:
other: ISO 1392 Determination of crystallizing point, 1977
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Type of method:
method to determine freezing temperature
Key result
Melting / freezing pt.:
-16 °C
Atm. press.:
ca. 1 atm

For graphical representation of temperature changes, refer to Figure 1 under 'attached background material'

Conclusions:
Under the study conditions, the freezing point of the test substance was determined to be -16°C.
Executive summary:

A study was conducted to determine the freezing point of ‘oils, vegetable, deodorizer distillates’ according to OECD guideline 102, EU Method A.1 and OPPTS 830.7200. The freezing point was determined by cooling the test substance using appropriate sample tubes and observing the temperature during crystallization. Starting from room temperature the test substance was cooled down to -37°C. No typical observation concerning a phase transition was observed. However at the end of the experiment the test substance was solid. Due to the curve progression it could be assumed, that the phase transition occurred at approximately -16 °C. Under the study conditions, the freezing point of the test substance was determined to be -16°C (Fieseler, 2010a).

Description of key information

A study was conducted to determine the freezing point of ‘oils, vegetable, deodorizer distillates’ according to OECD guideline 102, EU Method A.1 and OPPTS 830.7200.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
-16 °C

Additional information

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