spirodiclofen (ISO);3-(2,4-dichlorophenyl)-2-oxo-1-oxaspiro[4.5]dec-3-en-4-yl 2,2-dimethylbutyrate

Melting point / freezing point

Link to relevant study record(s)

Reference

Endpoint:

melting point/freezing point

Type of information:

experimental study

Adequacy of study:

key study

Study period:

In-life initiated/completed: 06-March-1997 to 03-July-1997

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Justification for type of information:

This study was conducted under GLP and in a trusted laboratory.

Qualifier:

no guideline followed

Principles of method if other than guideline:

The melting point of the reference substance was determined using a melt microscope.
The microscope slide covered with a very small quantity of the test substance evenly distributed as a transparent layer of dust was placed onto the hot stage of a melt microscope (instrument from E. Leitz, Germany). The electric heating of the stage was regulated in such a way that the increase of temperature was approx. 1 °C/min in the expected range of the melting point. The crystals on the slide where observed continuously through the microscope in order to determine beginning and end of the melt process defined by the temperature at which a liquid phase is observed for the first time and by the temperature at which complete disappearance of the solid phase has occurred.

GLP compliance:

yes (incl. QA statement)

Type of method:

hot stages

Key result

Melting / freezing pt.:

94.8 °C

Conclusions:

The melting point of Spirodiclofen was determined to be 94.8 °C.

Executive summary:

A study into melting point was conducted and it was determined to be 94.8 °C.

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:

94.8 °C