Product: Sodium Dichloroisocyanurate Dihydrate (SDIC·2H₂O)
CAS: 51580-86-0
Molecular Formula: C₃Cl₂N₃NaO₃·2H₂O
Hazard Class: 5.1 
UN No.: 2465
Appearance: White crystalline powder or granules with slight chlorine odor

Description: SDIC Dihydrate is manufactured through controlled chlorination of cyanuric acid in sodium hydroxide solution, followed by crystallization with 2 water molecules. Containing 56-60% available chlorine, this stabilized chlorine compound offers superior solubility and slower chlorine release than anhydrous SDIC. The dihydrate form is particularly valued for effervescent disinfectant tablets, drinking water purification, and food contact surface sanitation where controlled dissolution is required.