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Physical & Chemical properties

Melting point / freezing point

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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 without detailed documentation
Qualifier:
according to guideline
Guideline:
other: ISO 3015 Cloud point
GLP compliance:
no
Remarks:
ISO 9001:2008
Melting / freezing pt.:
< -50 °C

Time [min]

Sample Temperature [°C]

Observations

0 (start)

25

clear liquid

8

22

clear liquid

12

19

clear liquid

18

16

clear liquid

22

13

clear liquid

25

10

clear liquid

30

7

clear liquid

34

4

clear liquid

38

1

clear liquid

43

-2

clear liquid

46

-5

clear liquid

50

-8

clear liquid

55

-11

clear liquid

60

-14

clear liquid

64

-17

clear liquid

67

-20

clear liquid

70

-23

clear liquid

73

-25

clear liquid

76

-28

clear liquid

79

-31

clear liquid

83

-34

clear liquid

86

-37

clear liquid

89

-40

clear liquid

93

-43

clear liquid

96

-46

clear liquid

101

-49

clear liquid

107

-52

clear liquid

115

-55

clear liquid

125

-58

clear liquid

 

Result Cloud point:

< –50 °C (< 223 K)

Conclusions:
A cloud point of < -50.0 °C was determined in a reliable study conducted according to an appropriate test protocol, and in compliance with ISO 9001:2008. The result is considered to be reliable.
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 without detailed documentation
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Version / remarks:
Pour point
GLP compliance:
no
Remarks:
ISO 9001:2008
Type of method:
pour point
Melting / freezing pt.:
< -50 °C

Time [min]

Sample Temperature [°C]

Observations

0 (start)

25

clear liquid

8

22

clear liquid

12

19

clear liquid

18

16

clear liquid

22

13

clear liquid

25

10

clear liquid

30

7

clear liquid

34

4

clear liquid

38

1

clear liquid

43

-2

clear liquid

46

-5

clear liquid

50

-8

clear liquid

55

-11

clear liquid

60

-14

clear liquid

64

-17

clear liquid

67

-20

clear liquid

70

-23

clear liquid

73

-25

clear liquid

76

-28

clear liquid

79

-31

clear liquid

83

-34

clear liquid

86

-37

clear liquid

89

-40

clear liquid

93

-43

clear liquid

96

-46

clear liquid

101

-49

clear liquid

107

-52

clear liquid

115

-55

clear liquid

125

-58

clear liquid

 

Result Pour point:

< –50 °C (< 223 K)

Conclusions:
A pour point of < -50.0 °C was determined in a reliable study conducted according to an appropriate test protocol, and in compliance with ISO 9001:2008. The result is considered to be reliable.
Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study without detailed documentation
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
GLP compliance:
no
Remarks:
ISO 9001:2008
Type of method:
differential scanning calorimetry
Key result
Melting / freezing pt.:
< -80 °C
Decomposition:
no

Test

Melting- / Freezing temperature

1

< –80 °C

2

< –80 °C

 

Mean value:

< –80 °C, < 193 K

 

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

Conclusions:
A melting point of < -80 °C was determined in a reliable study conducted according to an appropriate test protocol, and in compliance with ISO 9001:2008. The result is considered to be reliable.

Description of key information

Melting point: <80.0 °C (OECD 102)

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
-80 °C

Additional information

Three measured melting point values from the same author (Haas, 2017) are available for the substance.

A melting point value of <-80.0°C at 1013 hPa was determined for the substance using a Differential Scanning Calorimetry (DSC) method in accordance with OECD Test Guideline 102. The value is considered to be reliable and is selected as key value. Additionally, a melting point of <-50.0°C at 1013 hPa was determined for the substance using a cloud point method in accordance with the ISO 3015 test method and a melting point of <-50.0°C at 1013 hPa was determined for the substance using a pour point method in accordance with the OECD Test Guideline 102.

All three studies were conducted in compliance with a known quality system (ISO 9001:2008).