Bromine, Copperrdavis Cuprous Bromide, Reagent Copper (I) Bromide CAS # 7789-45-9 CuBr FW: 143.46 Downloads Cuprous Bromide Information Sheet Cuprous Bromide SDS US Specifications: Assay : 99.0 % min. pH of 5 % solution: 2.5-4.5 Insoluble Matter: 0.01 % max. Chloride: 0.3 % max. Sulfate: 0.01 % max. Iron: 0.005 % max. 100 lb. Fiber drum Item # 1800-01