Chemical formula: ( C2H5) 2NCSSNa3.H2O Molecular weight: 225.3 Grade: Industrial grade Properties: White powder with light fish smell, m.p. 87° C, very easily soluble in water; water solution is basic; can be gradually decomposed in the air; and will decomposed into carbon disulphide and di-ethylamine in acids. Spec.: Assay no less than 94% . Usage: It is an excellent collector with good selectivity for the flotation of Cu, Pb, Sb and other metal sulphides.