Metal Etchant


Brass Etchant

PJ-203 is a high functional surface treatment agent which removes scale and oil generated from pressing, drawing & annealing processes, and oxidized layer formed from long term storage.

[ Properties and method ]

Appearance Colorless transparent liquid Concentration Original/undiluted
Odor Unique odor Temp. Room temp. ~ 50 ℃
pH(10%) Method Dipping, spray
S/G (g/ml) 1.23 ± 0.02 Packing 20L (pail) / 200L (drum)

※ Solution management

(1) Check the initial acidity of the solution.
(2) When the time of etching becomes longer, check the acidity and add adequate amount of original solution.
(3) When the solution is used for a long term, change the solution to a new one.

※ Wastewater treatment

(1) Set the pH to 7.5~8.0 with NaOH.
(2) Settle the solution by adding inorganic coagulants.
(3) Filter and discharge.