TC-DEP N N-Diethyl-2-propyne ammonium sulfate, DEP50, top brightener and lasting leveling agent in nickel ... baths TC-DEP N N-Diethyl-2-propyne ammonium sulfate, DEP50 TECHNICAL DATA SHEET TC-DEP Chemical nature Chemical ... name N,N-Diethyl-2-propyne ammonium sulfateProperties Physical form Yellowish to yellow transparent LiquidConcentration (%) ≥50.0 ...