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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Link to relevant study record(s)

melting point/freezing point
Type of information:
experimental study
Adequacy of study:
key study
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
data from handbook or collection of data
Principles of method if other than guideline:
Data from handbook, no method provided
GLP compliance:
Type of method:
other: no method provided
Key result
Melting / freezing pt.:
>= 170.5 - <= 177 °C
Remarks on result:
other: no information on atm. pressure, decomposition not reported for that temperature range
melting point: 170.5 to 177°C
Executive summary:

According to Martin (1971; cited in US-EPA document EPA-504 -1 -75 -028 ; 1975, page 17) and Merck (1968; cited in US-EPA document EPA-504 -1 -75 -028 ;1975, page 17) Monuron has a melting point of 170.5 to 177 °C.

Since this information is obtained form a peer reviewed document from an international accepted authority the result is considered reliable with restrictions for the further assessment.

Description of key information

melting point: 170.5 to 177°C

Key value for chemical safety assessment

Melting / freezing point at 101 325 Pa:
170.5 °C

Additional information

For the chemical safety assessment, the lowest reported melting point will be used.