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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:
experimental study
Adequacy of study:
weight of evidence
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
documentation insufficient for assessment
Remarks:
no method information
Principles of method if other than guideline:
no method information
Type of method:
other: no method information
Specific details on test material used for the study:
99 % purity based on iodometric analysis
Melting / freezing pt.:
23 °C
Conclusions:
The reported mp was 23 oC
Executive summary:

The reported mp was 23 oC

Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
weight of evidence
Study period:
1951
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
documentation insufficient for assessment
Remarks:
no purity or method information
Principles of method if other than guideline:
no method information
Type of method:
other: no method information
Melting / freezing pt.:
23 °C
Conclusions:
The reported mp is 23 oC
Executive summary:

The reported mp is 23 oC

Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
weight of evidence
Study period:
1959
Reliability:
4 (not assignable)
Rationale for reliability incl. deficiencies:
documentation insufficient for assessment
Principles of method if other than guideline:
Fisher-Johns melting point apparatus
Type of method:
other: Fisher-Johns melting point apparatus
Specific details on test material used for the study:
"highly pure" by iodometric method (peroxide oxygen 5.59 vs 5.54)
Melting / freezing pt.:
>= 21.8 - <= 22.4 °C
Remarks on result:
other: from diethyl ether
Conclusions:
reported mp is 21.8 - 22.4 oC
Executive summary:

reported mp is 21.8 - 22.4 oC

Description of key information

The mp is 22 -23 oC based on weight of evidence of three literature reports (23 oC, 23 oC and 21.8 -22.4 oC)

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
23 °C

Additional information