... BCDMH, BDBMH,DCDMH etc,for Bromine tablets is just BCDMH(1-bromo-3-chloro-5.5-dimethyl hydantoin) Specifications:Commodity Name ... : Bromine tabletChemical name: bromo chloro 5,5 dimethylhydantoin Chemical formula: C5H6O2Cl N2BrCas No.: 16079-88-2Appearance: Powder granular or 20g ... weight: 20,35g,100g,200g UN number: 3085Danger class: 5.1 It's mainly for water treatment - Swimming pools, cooling ...