1,3-Dibromo-5,5-dimethylhydantoin cas:77-48-5 purity:98% used in water treatment system, swimming pools 1,3-Dibromo-5,5-dimethylhydantoin [Product Name]:1,3-Dibromo-5,5- ... of water can dissolve 2.2g1 of 1,3-Dibromo-5,5-dimethylhylhydantoin, pH-value of 0.1% water solution is 2.6. ... powderAssay98.0Dyring Loss %≤ 0.5Effective bromine %≥ 54.8ConclusionQualified 1,3-Dibromo-5,5-dimethylhydantoin 98%