N (ethylene thiourea) Trade name:n Chemical name:ethylene thiourea Molecular formula:c3h6sn2 Cas:96-45-7 Assay:98% Appearance:white crystal Melting point:198-198 Usage0.4-1.0mg/l Application : it is soluble in hot alcohol solution. It is used as brightening agent for copper plating and combined with acidic copper plating brightener m, sp and so on.