ST-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. After cleaning, the solution does not cause discoloration of material even in long term storage.
[ Properties and method ]
Colorless transparent liquid
10~25% diluted in water
Room temp. ~ 50 ℃
1 ± 0.5
1.12 ± 0.02
20L (pail) / 200L (drum)
※ Solution management
• Check the initial acidity of the solution.
• When the time of etching becomes longer, check the acidity and add adequate amount of original solution.
• 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.