EDTP ( Q75) (C14H32N2O4) N,N,N,N -tetra(2-hydropropayl) ethylene diamine CAS No. 102-60-3 Appearance: Clear colorless liquid Assay:â?¥75% Density g/cm3 (20): 1.04~1.06 PH: 7.5~8.5 Refractive Index(20): 1.4470~1.4570 Application: It is soluble in water easily, its aqueous solution is weak alkaline, primary used as complex agent for electroless Copper plating.