... leveling BOZ cas no. 110-65-6 1,4-Butynediol nickel brightener intermediateBOZ nickel lasting brightener plating ... agent in nickel bath(secondary brightener)Chemical name1,4-ButynediolEmpirical formulaC4H6O2Molecular weight86.1Characteristic:AppearanceColorless to yellowish crystalline ... Copper plating (Brightener& leveling agent)CB-1, CB-4, CB-5,CB-6...Acid Copper PlatingSPS, PZ- ...