A white powder with a slight chlorine smell. Dichlorodimethylhydantoin is a chlorinating agent that is used in powder type household bleaches (Sage's Dry Bleach, Colgate's Pruf). When kept dry, it has a long shelf life with only minor loss of chlorine. On contact with water, it forms hypochlorous acid that acts as a bleaching agent and disinfectant.
Synonyms and Related Terms
1,3-dichloro-5,5-dimethylhydantoin; dichloratin; 2,4-Imidazolidineione; DDH; Dactin; Halane; household laundry bleach
Soluble in chlorinated solvents, alcohols and benzene.
Slightly soluble in water forming a solution with pH about 4.4
|Molecular Weight||mol. wt. = 197.02|
Hazards and Safety
Irritating to eyes, nose, skin and lungs. Combustible with the evolution of chlorine.
Fisher Scientific: MSDS
Sources Checked for Data in Record
- Richard S. Lewis, Hawley's Condensed Chemical Dictionary, Van Nostrand Reinhold, New York, 10th ed., 1993
- The Merck Index, Martha Windholz (ed.), Merck Research Labs, Rahway NJ, 10th edition, 1983 Comment: entry 3115