This additive is a pinkish liquid, used in the electrolytic coloring process after the anodization of Al profiles. By using this agent, it is easy to control the Rose Gold coloring processing with minimum color difference and better result in terms of abrasion-resistance, erosion-resistance and weather-resistance than that of the conventional champagne-colored ones.

1. Bath Composition (For make-up):

SN-4
H₂SO₄
Deionized Water

10g/L
15g/L
Remaining Amount

2. Processing Parameters:

SN-4
Free H₄SO₄
Temperature
Coloring Voltage
Time

8-12g/L
15-20g/L
20-30℃
11-14V
2-10min

3. Bath Maintenance:

(1) Analyze the contents of SN-4, free H2SO₄ and make compensation in time.
(1) SN-4 Consumption: 3-5kg/t for production of light colored product ; 8-10kg /t for production of dark colored product
(2) Since Rose Gold coloring process can only be deepened and not it`s reverse, its operation has to be handled by qualified personnel with great care.