5,5-Dimethylhydantoin (CAS 77-71-4, C5H8N2O2, MW 128.13) is a white crystalline heterocyclic compound of the hydantoin (imidazolidine-2,4-dione) family, carrying two methyl groups at the 5-position. It is a versatile intermediate used mainly in the manufacture of halogenated hydantoin biocides, formaldehyde-releasing preservatives and other fine chemicals. PolyBlueChem supplies 5,5-Dimethylhydantoin as a high-purity crystalline powder with a full Certificate of Analysis.
Specifications
| Parameter | Specification |
|---|---|
| Appearance | White crystal powder |
| Purity (assay) | 99% min |
| Melting point | 174 – 181 °C |
| Drying loss | 0.5% max |
| Ash content | 0.2% max |
| Colour (APHA) | 10 max |
Applications
- Intermediate for 1,3-dihalo-5,5-dimethylhydantoins (e.g. DCDMH, DBDMH) used as disinfectants and bleaching agents.
- Raw material for 1,3-dimethylol-5,5-dimethylhydantoin (DMDMH), a formaldehyde-releasing preservative.
- Building block for pharmaceutical and agrochemical intermediates, and for specialty derivatives.
Storage and Packaging
Store in tight, dry containers at ambient temperature, protected from moisture and away from strong acids, bases and oxidising agents. Typically supplied in 25 kg fibre drums or bags, or as agreed. The retest period and storage conditions are stated on the Certificate of Analysis.
Chemical Structure
CC1(C(=O)NC(=O)N1)C
FAQ
What is 5,5-Dimethylhydantoin used for? It is used mainly as an intermediate – above all for halogenated hydantoin biocides (such as DCDMH and DBDMH) and for the preservative DMDMH – as well as in pharmaceutical and agrochemical synthesis.
What purity is supplied? The standard grade is a white crystal powder with an assay of 99% min, drying loss 0.5% max, ash 0.2% max and colour (APHA) 10 max.
How should it be stored? Store dry and sealed at ambient temperature, away from strong acids, bases and oxidants. Packaging is typically 25 kg drums or bags as agreed.
