Aluminium Extrusion Anodizing Chemicals ( Golden Yellow Color ) Dyeing Chemical Additive LW-20

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Aluminium Extrusion Anodizing Chemicals ( Golden Yellow Color ) Dyeing Chemical Additive LW-20

LW-20 Dyeing Additive (Golden Yellow Color) (Solid)

LW-20 golden yellow dyeing additive is a kind of inorganic dyestuff, which is used for dyeing strong golden yellow on aluminum oxidation film. It has stronger lightfastness and weatherability than organic golden yellow.

Solution Maintenance:

1) Cover up LW-20 bath solution from light when it is not use.

2) Solution should be mixed by pump to ensure the dye uniformity.

3) Analyze the concentration of main salt of LW-20 and add in time.

4) Clean up the impurities of the bath bottom regularly.

 

Attentions:

1) Adjust the PH with oxalic acid if it is higher, and adjust with dilute aqua ammoniae or dilute sodium hydroxide if it is lower. Keep stirring and adjust slowly to avoid the precipitation of iron hydroxide when adjust the PH 

2) If the solution appears yellow or muddy, may reduce the PH properly and after standing for some time then adjust the PH to the process range.

3) Reduce the PH properly when non-production which is good for protecting the solution.

4) Control the concentration of oxalic acid in 110-140g/L to correspond with main salt of

 

Packaging and Storage:

Package: Carton (30kg/ carton), plastic woven bag (25kg/bag)

Storage: Suggested to store in cool, dry and well ventilated place; away from fire and heat source.

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