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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:
2017
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Deviations:
no
Qualifier:
equivalent or similar to
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Deviations:
no
GLP compliance:
no
Type of method:
differential scanning calorimetry
Specific details on test material used for the study:
Name: 9-Octadecenoic acid (9Z)-, propyl ester
Product Description: Propyl oleate
CAS No.: 111-59-1
Physical state: pale yellow to yellow liquid at 20 °C
Batch No.: 37584
Re-certification date of batch: 08 March 2018
Purity: > 99 % (fatty acid propyl esters, max water content 0.3 % (w/w))
Free Fatty Acid, % Oleic: 0.1
Color, Gardner: 3
Iodine Value, cg I2/g 75
Cloud Point, degrees C 0
Saponification Number, mg KOH/g 177
Moisture, % 0,07
Stability: stable under test conditions
Storage condition of test material: Room temperature, protected from light
Key result
Melting / freezing pt.:
>= -48 - <= -15 °C
Atm. press.:
1 004 mBar
Decomposition:
no
Sublimation:
no

Results

To determine the melting behaviour (three independent single measurements), the test item was measured by DSC between -90 °C and 50 °C with a heating / cooling rate of 10 K/min in 2 cycles. For the measurement a capsulated crucible was used.

The test item Propyl oleate shows a melting area of crystalline subcomponents between -48 °C and -15 °C according to the definition in the OECD Guideline 102 (mean value from repeat determination).

-48 °C to -15 °C (from first measurement)

-48 °C to -15 °C (from second measurement)

-48 °C to -15 °C (from third measurement)

The cooling run shows a crystallization.

Conclusions:
The test item Propyl oleate shows a melting area of crystalline subcomponents between -48 °C and -15 °C according to the definition in the OECD Guideline 102 (mean value from repeat determination).
Executive summary:

The test item Propyl oleate shows a melting area of crystalline subcomponents between -48 °C and -15 °C according to the definition in the OECD Guideline 102 (mean value from repeat determination).

Description of key information

The test item Propyl oleate shows a melting area of crystalline subcomponents between -48 °C and -15 °C according to the definition in the OECD Guideline 102 (mean value from repeat determination).

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
-48 °C

Additional information