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Melting point / freezing point

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Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
March 2013
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: The data contained in this report has been generated in a laboratory holding a current statement of GLP Compliance, issued by the UK GLP Monitoring Authority, MHRA, but not as part of a formal GLP study.
Qualifier:
according to
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Deviations:
no
Principles of method if other than guideline:
Not applicable
GLP compliance:
no
Remarks:
The data contained in this report has been generated in a laboratory holding a current statement of GLP Compliance, issued by the UK GLP Monitoring Authority, MHRA, but not as part of a formal GLP study.
Type of method:
other: Melting Point Instrument
Key result
Decomposition:
yes
Decomp. temp.:
ca. 380 °C

A melting point tube was filled in triplicate withtest substanceDechlorane Plus 25, Intertek Reference10467868. As the test substance was a fine powder, it was not ground further before analysis. 

An initial test was performed in triplicate using a temperature gradient of30°C to 400°C at a rate of 10°C/min. The test substance, a fine white powder, was observed to change colour to a light brown colour at 350°C, which then slowly darkened in colour as the temperature increased further until the test substance was observed to be black, indicating full decomposition at 380°C. No melt was observed. Due to the observed decomposition, a repeat test, over a narrower and slower temperature range, normally used to provide accurate melting point data, was not performed.

Conclusions:
No melt observed. Decomposition at 380°C
Executive summary:

Experimental determination of melting point was performed using a Buchi B545 Melting Point Instrument in accordance with EU Method A1 (Photocell Detection).

Using a temperature gradient of 30°C to 400°C at a rate of 10°C/min, The test substance, a fine white powder, gave results: No melt observed

Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
March 2013
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: The data contained in this report has been generated in a laboratory holding a current statement of GLP Compliance, issued by the UK GLP Monitoring Authority, MHRA, but not as part of a formal GLP study.
Qualifier:
according to
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Deviations:
no
Principles of method if other than guideline:
Not applicable
GLP compliance:
no
Remarks:
The data contained in this report has been generated in a laboratory holding a current statement of GLP Compliance, issued by the UK GLP Monitoring Authority, MHRA, but not as part of a formal GLP study.
Type of method:
other: Melting Point Instrument
Key result
Decomposition:
yes
Decomp. temp.:
ca. 382 °C

A melting point tube was filled in triplicate withtest substance Dechlorane Plus 35, Intertek Reference10467869. As the test substance was a fine powder, it was not ground further before analysis. 

An initial test was performed in triplicate using a temperature gradient of 30°C to 400°C at a rate of 10°C/min. The test substance, a fine white powder, was observed to change colour to a light brown colour at 350°C, which then slowly darkened in colour as the temperature increased further until the test substance was observed to be black, indicating full decomposition at 382°C. No melt was observed. Due to the observed decomposition, a repeat test, over a narrower and slower temperature range, normally used to provide accurate melting point data, was not performed.

Conclusions:
No melt observed. Decomposition at 382°C
Executive summary:

Experimental determination of melting point was performed using a Buchi B545 Melting Point Instrument in accordance with EU Method A1 (Photocell Detection).

Using a temperature gradient of 30°C to 400°C at a rate of 10°C/min, The test substance, a fine white powder, gave results: No melt observed

Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
March 2013
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: The data contained in this report has been generated in a laboratory holding a current statement of GLP Compliance, issued by the UK GLP Monitoring Authority, MHRA, but not as part of a formal GLP study.
Qualifier:
according to
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Deviations:
no
Principles of method if other than guideline:
Not applicable
GLP compliance:
no
Remarks:
The data contained in this report has been generated in a laboratory holding a current statement of GLP Compliance, issued by the UK GLP Monitoring Authority, MHRA, but not as part of a formal GLP study.
Type of method:
other: Melting Point Instrument
Key result
Decomposition:
yes
Decomp. temp.:
ca. 376 °C

A melting point tube was filled in triplicate withtest substanceDechlorane Plus 515, Intertek Reference 10467870. As the test substance was a fine powder, it was not ground further before analysis. 

An initial test was performed in triplicate using a temperature gradient of30°C to 400°C at a rate of 10°C/min. The test substance, a fine white powder, was observed to change colour to a light brown colour at 340°C, with spots of darker colour appearing at approximately 360°Cuntil the test substance was observed to be black, indicating full decomposition at 376°C. No melt was observed. Due to the observed decomposition, a repeat test, over a narrower and slower temperature range, normally used to provide accurate melting point data, was not performed.

Conclusions:
No melt observed. Decomposition at 376°C
Executive summary:

Experimental determination of melting point was performed using a Buchi B545 Melting Point Instrument in accordance with EU Method A1 (Photocell Detection).

Using a temperature gradient of 30°C to 400°C at a rate of 10°C/min, The test substance, a fine white powder, gave results: No melt observed

Description of key information

No melt observed. Decomposition at 380°C.

Key value for chemical safety assessment

Additional information

The data contained in this report has been generated in a laboratory holding a current statement of GLP Compliance, issued by the UK GLP Monitoring Authority, MHRA, but not as part of a formal GLP study.