... brightener plating intermediate Brightener and leveling BOZ cas no. 110-65-6 1,4-Butynediol nickel brightener intermediateBOZ nickel lasting brightener ... ..Impurity ToleranceATPN , SSO3, PN, PZN, FEZX ..Brighter and leveling agent at low area lightPOPDH, PS, POPS,..Low foam wetting agentTC-EHS ... Sulfate, Chromiun Nitrate.... BOZ 1,4-Butynediol cas no. 110-65-6