CAS 20427-59-2 Structure ChemicalName Copper ( II) hydroxide, cupric hydroxide Molecular Formula CuH2O2 Molecular Weight 97.56 Physical and Chemical Properties Apperance: blue powder. Solubility: Insoluble in water. Melting point: Decomposes. Hazardous to fish.when used as directed. Prevention Object It used to kill the eggs, the larva and the adult. Toxicity Acute oral: LD50 1000 mg/ kg Formulations 50% WDG.50% DF Please feel free to contact with me by E-mail reg@ shsinochem.com.