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Diss Factsheets

Physical & Chemical properties

Melting point / freezing point

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Administrative data

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Endpoint:
melting point/freezing point
Type of information:
read-across based on grouping of substances (category approach)
Adequacy of study:
supporting study
Study period:
From April 26, 2010 to Jun3 08, 2010
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study with acceptable restrictions
Remarks:
KL2 due to RA
Justification for type of information:
Refer to the section 13 for details on the read across justification. The melting point study with the read across substance is used as a supporting 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
Principles of method if other than guideline:
Not applicable
GLP compliance:
yes (incl. QA statement)
Type of method:
capillary method
Key result
Melting / freezing pt.:
> 41 - <= 48 °C
Atm. press.:
ca. 1 atm

None

Conclusions:
Based on the results of the read across study, the melting point of the test substance, Soaps, stocks, vegetable oil, acidulated is considered to be 41-48°C.
Executive summary:

A study was conducted to determine the melting point of the read-across substance ‘glycerides, C16 -18 and C18 -unsatd., deodorizer distillates’ according to standard OECD guideline 102, EU Method A.1 and OPPTS 830.7200. The melting point was determined by the capillary method using an electronically controlled heating system. The determination of the melting point was performed by visual judgement. The read across substance showed five stages of melting. The melting started at 40.6°C. At 47.8°C the final stage of melting was reached and no solid particles were left. Under the study conditions, the melting point of the substance was determined to be in the range of 41 -48°C (Fieseler, 2010c). Based on the results of the read across study, the melting point of the test substance, Soaps, stocks, vegetable oil, acidulated is considered to be 41-48°C.

Endpoint:
melting point/freezing point
Type of information:
read-across based on grouping of substances (category approach)
Adequacy of study:
supporting study
Study period:
From April 26, 2010 to June 08, 2010
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study with acceptable restrictions
Remarks:
KL2 due to RA
Justification for type of information:
Refer to the section 13 for details on the read across justification. The melting point study with the read across substance is used as a supporting 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
Principles of method if other than guideline:
Not applicable
GLP compliance:
yes (incl. QA statement)
Type of method:
capillary method
Key result
Melting / freezing pt.:
> 28 - <= 29 °C
Atm. press.:
ca. 1 atm

None

Conclusions:
Based on the results of the read across study, the melting point of the test substance, Soaps, stocks, vegetable oil, acidulated is considered to be 28-29°C.
Executive summary:

A study was conducted to determine the melting point of the read-across substance ‘lauric fats deodorizer distillates’ according to OECD guideline 102, EU Method A.1 and OPPTS 830.7200. The melting point was determined by the capillary method using an electronically controlled heating system. The determination of the melting point was performed by visual judgement. The read across substance showed five stages of melting. The melting started at 27.6°C. At 28.7°C the final stage of melting was reached and no solid particles were left. Under the study conditions, the melting point of the substance was determined to be in the range of 28 -29°C (Fieseler, 2010d). Based on the results of the read across study, the melting point of the test substance, Soaps, stocks, vegetable oil, acidulated is considered to be 28-29°C.

Endpoint:
melting point/freezing point
Type of information:
read-across based on grouping of substances (category approach)
Adequacy of study:
key study
Study period:
From 08 Mar., 2010 to 03 May, 2010
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study with acceptable restrictions
Remarks:
KL2 due to RA
Justification for type of information:
Refer to the section 13 for details on the read across justification. The melting point study with the read across substance is used as a supporting 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:
Based on the results of the read across study, the melting point of the test substance, Soaps, stocks, vegetable oil, acidulated is considered to be -16°C.
Executive summary:

A study was conducted to determine the freezing point of the read across substance, ‘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 read across substance using appropriate sample tubes and observing the temperature during crystallization. Starting from room temperature the read across substance was cooled down to -37°C. No typical observation concerning a phase transition was observed. However at the end of the experiment the read across 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 read across substance was determined to be -16°C (Fieseler, 2010a). Based on the results of the read across study, the melting point of the test substance, Soaps, stocks, vegetable oil, acidulated is considered to be -16°C.

Endpoint:
melting point/freezing point
Type of information:
read-across based on grouping of substances (category approach)
Adequacy of study:
supporting study
Study period:
From March 16, 2010 to April 26, 2010
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study with acceptable restrictions
Remarks:
KL2 due to RA
Justification for type of information:
Refer to the section 13 for details on the read across justification. The melting point study with the read across substance is used as a supporting 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
Principles of method if other than guideline:
Not applicable
GLP compliance:
yes (incl. QA statement)
Type of method:
capillary method
Key result
Melting / freezing pt.:
> 42 - <= 69 °C
Atm. press.:
ca. 1 atm
Remarks on result:
other:

None

Conclusions:
Based on the results of the read across study, the melting point of the test substance, Soaps, stocks, vegetable oil, acidulated is considered to be 42-69°C.
Executive summary:

A study was conducted to determine the melting point of the read-across substance ‘soybean oil, deodorizer distillates’ according to OECD 102, EU Method A.1 and OPPTS 830.7200. The melting point was determined by the capillary method using an electronically controlled heating system. The determination of the melting point was performed by visual judgment. The read across substance showed five stages of melting. The melting started at 42.0°C. At 68.9°C the final stage of melting was reached. No solid particles were left. Under the study conditions, the melting point range of the substance was determined to be 42 - 69°C (Fieseler, 2010b). Based on the results of the read across study, the melting point of the test substance, Soaps, stocks, vegetable oil, acidulated is considered to be 42-69°C.

Description of key information

A study was conducted to determine the freezing point of ‘Soaps, stocks, vegetable oil, acidulated’ 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

The test data showed a range from -16 to +69°C.