ALUMON BLACK MLW
Alumon Black MLW Powder is ideally suited black colorant for architectural quality
applications because of its excellent light and weather fastness.
Physical appearance : Black to dark grey powder
Chemical description : Metalized azo dye.
Light fastness : 8 +
Weather fastness : Excellent
Heat fastness : 120° C.
RECOMMENDED APPLICATION DETAILS:
Anodic coating thickness : More than 15 microns
Concentration : 8 - 10 g/l
pH range : 4.2 - 4.8
Dye bath Temperature : 55° - 60° C.
Immersion Time : 10 - 20 minutes
SEALING:
The dyed oxide film must be properly sealed properly using a hot sealing salt ANO SEAL CA-350 for best result.
Other Recommendation:
1) Ammonium compounds shall not be used for controlling of the pH or to buffer dye
bath solution.
2) The presence of ammonium compounds in the sealing solution may cause
leaching and loss of color.
3) Use sodium acetate for dye buffer.
4) Adequate care to be taken for proper rinsing to control drag-in for optimum tank life.
5) Dye may be dissolved separately outside the dye bath. Use demineralized water for
better dye bath stability.
6) The life of dye bath is reduced by water containing ammonium.
