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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Physical & Chemical properties

Melting point / freezing point

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Link to relevant study record(s)

Reference
Endpoint:
melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
EU Method A.1 (Melting / Freezing Temperature)
GLP compliance:
yes
Type of method:
thermal analysis
Remarks:
DTA, additionally a thermogravimetry was performed.
Remarks on result:
other: no melting point detectable

No melting point is detectable for the test substance. The measured endothermic effects at 60 °C - 125 °C are caused by the elimination of crystal water.

In the thermogravimetry test with heating rate 10 K/min in the range 30 °C to 300 °C a mass loss of 26.4% was detected which equals 3.3 mol crystal water. (1. step 30 °C - 97 °C: 5.3%, 2. step 97 °C - 191 °C: 21.1%).

Executive summary:

In a differential thermal analysis study according to EU Method A.1 no melting point was detectable for the sodium p-chloro-m-cresolate (hydrated form). The measured endothermic effects at 60 °C - 125 °C are caused by the elimination of crystal water.

In a thermogravimetry test a mass loss of 26.4% was detected which equals 3.3 mol crystal water.

Description of key information

no melting point detectable in DTA

endothermic effects at 60 °C - 125 °C

(EU Test A.1)

Key value for chemical safety assessment

Additional information

Additionally, in a thermogravimetry test with heating rate 10 K/min in the range 30 °C to 300 °C a mass loss of 26.4% was detected which equals 3.3 mol crystal water.