1.Description

Specialty Violet DS is a single component, water soluble dye, used to color anodized aluminum shades resembling a purple.

0  Eco-friendly, contains no heavy metals.

0 RoHS compliant

0 REACH compliant

2.Application instructions

Concentration:             1-3 g/l

pH:                             6.0 ±0.5

Buffering:                    Not required

Temperature:               60°C ±-1.5°C

Oxide film thickness:                                   0.50 mils. or greater

Dye time:                     Depending on the shade desired, dye times could range from 2-15 minutes, but can only be determined by sampling in plant production.

Preferred sealing:         Specialty Sealant MTL

Specialty Sealant

3.Conditions for using Specialty Violet DS

Tank:                           Stainless steel or other acid resistant materials such as neoprene, polyethylene and polypropylene that can withstand a constant operating temperature of 140°F.

 Water quality:              Deionized

pH adjustments:          Raise with sodium hydroxide.

Lower with acetic acid.

The pH should be checked once per shift with a calibrated meter and maintained within recommended range.

Bath agitation:             Mild agitation must be used for high uniformity of color.

Rinsing:                       It is important to remove all acid residues clinging to the work and acid retention in the oxide pore itself. Rinse work load thoroughly after anodizing. A minimum of two rinses is recommended, with the second rinse at over-flow.

To increase rinsing effectiveness, add vigorous air agitation in all rinse tanks. This also improves your rinsing of surfaces on complicated shaped parts.

4.Light fastness