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Physical & Chemical properties

Melting point / freezing point

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Reference
Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
22 February 2018 to 30 October 2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
Deviations:
no
GLP compliance:
yes
Type of method:
method to determine freezing temperature
Specific details on test material used for the study:
Physical Form: Amber liquid
Stability: Stable at room temperature
Key result
Melting / freezing pt.:
< -20 °C
Remarks on result:
other: visual assessment

Freezing Point Observations

Temperature

Sample Appearance

4 °C

Vial inverted, Test Item mobile, i.e. not frozen

-20 °C

Top of Test Item removed, hardened compared to 4°C but still pliable
when touched with spatula, i.e. not frozen

-80 °C

Top of Test Item removed, hardened compared to -20°C but still pliable
when touched with spatula, i.e. not frozen

 

Conclusions:
The melting point of the test substance has been determined to be less than -20 °C.
Executive summary:

The preliminary test indicated a freezing point of < -20 °C for the Test Item. Therefore, a full freezing point determination was not required as described in ECHA Guidance R.7.1.2:

Column 2 of REACH Annex VII provides the following specific rules for adaptation of the standard information requirement for melting point/freezing point.

‘The study does not need to be conducted below a lower limit of -20 °C.’

‘Therefore, Annex 7 to REACH does not require determination of the melting point below a lower limit of -20 °C. The lower limit should be confirmed through testing, except where a (Q)SAR indicates a melting point of -50 °C or lower.’

Description of key information

The melting point of the test substance has been determined to be less than -20 °C.

Key value for chemical safety assessment

Additional information