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EC number: 219-006-1 | CAS number: 2312-35-8
Melting point / freezing point
Administrative data
Link to relevant study record(s)
- Endpoint:
- melting point/freezing point
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 23rd October 2001 to 15th November 2001
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
- Qualifier:
- according to guideline
- Guideline:
- EU Method A.1 (Melting / Freezing Temperature)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- EPA OPPTS 830.7200 (Melting Point / Melting Range)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Type of method:
- method to determine freezing temperature
- Key result
- Remarks on result:
- other: The test substance solidified on cooling but there was no distinct freezing point above -70 ºC
- Conclusions:
- Under the conditions of the test, the test material solidified on cooling but exhibited no distinct freezing point above -70 ºC.
- Executive summary:
In a GLP compliant melting/freezing point study conducted in accordance with standardised guidelines EU Method A.1 and EPA OPPTS 830.7200, the freezing point of the test material was determined. Under the conditions of the test, the substance solidified on cooling but exhibited no distinct freezing point above -70 ºC.
Reference
When cooled between 30 and -70 ºC, the test material exhibited a steady decrease in temperature with no leveling of the temperature for a period of time indicating a distinct freezing point. At 20 ºC the test material became too viscous to stir and at -70 ºC was completely solid.
Description of key information
Solidifies on cooling but exhibits no distinct freezing point above -70 ºC; study conducted in accordance with EU Method A.1 and EPA OPPTS 830.7200; Riggs (2001b)
Key value for chemical safety assessment
Additional information
In a GLP compliant melting/freezing point study conducted in accordance with standardised guidelines, the freezing point of the test material was determined. Under the conditions of the test, the substance solidified on cooling but exhibited no distinct freezing point above -70 ºC.
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