Registration Dossier
Registration Dossier
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EC number: 214-447-6 | CAS number: 1129-42-6
Melting point / freezing point
Administrative data
Link to relevant study record(s)
Description of key information
decomposition: > 174 °C
Key value for chemical safety assessment
Additional information
The melting behaviour of the substance 6-methyl-2-oxoperhydropyrimidin-4yl urea (CAS 1129-42-6) was determined by Differential Scanning Calorimetry according to OECD Guideline 102.
The substance shows no melting of crystalline components up to 174 °C. From 174 °C the test item shows most probably thermal decomposition with melting and evaporation of decomposition products.
This effect is not a melting of the main component, what is additionally confirmed with the use of the Kofler heating bench and measurements employing capillary method. The cooling runs show no crystallization.Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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