ST-203
Cu Surface Treatment Agent
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 ]
| Appearance | Colorless transparent liquid | Concentration | 10~25% diluted in water |
|---|---|---|---|
| Odor | Unique odor | Temp. | Room temp. ~ 50 ℃ |
| pH(1%) | 1 ± 0.5 | Method | Dipping, spray |
| S/G (g/ml) | 1.12 ± 0.02 | Packing | 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.
- (3) Filter and discharge.
