DEP (C7H13N) 1- Diethylamino-2-propyne CAS No.4079-68-9 appearance :clear coloress or yellowish liquid Assay:98%min Density g/cm3 (20℃): 0.75~0.85 PH: ≥7 Refractive Index(20℃):1.4245~1.4467 Application leveling agent,brightener,for nickel plating