Registration Dossier

Administrative data

Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
January 24, 1991
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: GLP-study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1991
Report date:
1991

Materials and methods

Test guidelineopen allclose all
Qualifier:
according to guideline
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Deviations:
yes
Remarks:
test substance not coninuously stirred but intermittently.
Qualifier:
according to guideline
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
GLP compliance:
yes
Type of method:
method to determine freezing temperature

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
Identification: DC 5067
Description: Clear, light brown liquid
Lot Number: AB 090122
Purity: >99%
Storage conditions: In the original container at room temperature in the dark
Stability under storage conditions: Stab1e
Expiry date: December 1, 1991

Results and discussion

Melting / freezing point
Melting / freezing pt.:
> -82 - < -24 °C
Atm. press.:
ca. 1 013.25 hPa
Remarks on result:
other: In a duplicate experiment it was found that the test substance has no defined freezing point or freezing range.

Applicant's summary and conclusion

Conclusions:
No freezing point/freezing range of the test substance could be determined. The viscosity of the liquid test substance increases with decreasing temperature until finally, the test substance is completely solidified.
Executive summary:

A duplicate experiment was performed to determine the freezing point/freezing range of DC 5067. In a pretest it was found that the test substance still flows at a temperature of -24°C and is solidified at -82°C. In a duplicate experiment it was found that the test substance has no defined freezing point or freezing range. With decreasing temperature, the viscosity of the test substance increased, without showing a clear phase transition of the liquid into the solid state. In conclusion, no freezing point/freezing range of the test substance could be determined. The viscosity of the liquid test substance increases with decreasing temperature until finally, the test substance is completely solidified.