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Diss Factsheets

Physical & Chemical properties

Melting point / freezing point

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Administrative data

Link to relevant study record(s)

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Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
06-Jul-2015
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study with acceptable restrictions
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Qualifier:
according to guideline
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
GLP compliance:
no
Type of method:
differential scanning calorimetry
Melting / freezing pt.:
< -100 °C
Remarks on result:
other: Information on atmospheric pressure was not stated, but ambient pressure was assumed.
Melting / freezing pt.:
< 173 K

Details:

 

The DSC diagrams show no melting/freezing temperature above –100°C.

 

Test

Melting temperature

1

<-100 °C

2

< -100 °C

Mean value

< -100 °C, < 173K

 

Conclusions:
A melting point of < -100°C (173 K) was determined in a reliable study conducted according to an appropriate test protocol. It was not conducted according to GLP.
Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
supporting study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study with acceptable restrictions
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Deviations:
no
GLP compliance:
no
Type of method:
differential scanning calorimetry
Melting / freezing pt.:
< -100 °C
Atm. press.:
ca. 101.3 kPa
Remarks on result:
other: Information on atmopsheric pressure was not stated, but ambient pressure was assumed.

Table 1: Results

Test

Melting temperature

1

<-100°C

2

<-100°C

Mean value

<-100C (<173K)

Approximate accuracy of the instrument = ±0.5K (up to 600K)

Conclusions:
A melting point of < -100°C (173 K) was determined in a reliable study conducted according to an appropriate test protocol. It was not conducted according to GLP.

Description of key information

<-100°C at 1013 hPa (OECD 102, differential scanning calorimetry)

Key value for chemical safety assessment

Additional information

The key study is supported by a measured melting point value of <-100 °C (at 1013 hPa) obtained from another reliable study.