Registration Dossier

Administrative data

Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Study period:
31 Jan 1990 to 7 March 1990
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: GLP study following recognised guideline but with less than complete reporting.

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
1990
Report Date:
1990

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
OECD Guideline 102 (Melting point / Melting Range)
Deviations:
yes
Remarks:
pressure not stated
GLP compliance:
yes (incl. certificate)
Type of method:
method to determine freezing temperature

Test material

Reference
Name:
Unnamed
Type:
Constituent
Details on test material:
Batch number 2364 of purity 98.1% w/w

Results and discussion

Melting / freezing point
Melting / freezing pt.:
-85 °C

Any other information on results incl. tables

Cooling in the above mixture produced an increasingly viscous mass down to -89 ºC. At this temperature there was the start of

a phase change as the clear liquid formed a crystalline solid. In the duplicate tests a temperature increase, due to the latent heat of crystallisation, was observed at -93 and -93.5 ºC respectively. The freezing point, defined as the plateau region on the freezing point curve yielding at least five consecutive temperature readings which differ by ± l ºC or less was determined in duplicate to be -85 ºC (188 K) on both occasions.

Applicant's summary and conclusion

Conclusions:
The melting point/freezing point of CIS-l,3-DICHLOROPROPENE is -85 ºC.
Executive summary:

The freezing point have been determined for cis-l,3-dichloropropene technical grade material, 98.1 % w/w, batch number 2634. These tests were conducted in accordance with the OECD Guidlines for Testing of Chemicals (1981) and the requirements of the EEC Directive 84/449/EEC (Annex V). The melting point/freezing point of CIS-l,3-DICHLOROPROPENE is -85 ºC.