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SANODYE BROWN R

Product

SANODYE BROWN R

Sanodye® Brown R  Homogeneous, water soluble dyestuff for the adsorptive dyeing of anodised  aluminium.    Sanodye® Brown R is notable for its interesting reddish brown shade and its technical
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Sanodye® Brown R 
Homogeneous, water soluble dyestuff for the adsorptive dyeing of anodised  aluminium. 
 
Sanodye® Brown R is notable for its interesting reddish brown shade and its technical reliability in 
application. 
 
Only recommended for interior use. 
 

1. Dye-specific Data 
 
Commercial form: fine granules 
Chemical character: Azo-dyestuff, unmetallized 
Density: 550 g/l 
Solubility in water: 300 g/l at 20°C 
Storage stability: practically unlimited, in closed original containers   
Ecotoxicological data: see safety data sheet.  
 
 
2. Application conditions  
 
Concentration, dyeing temperature and time 
 
 Concentration Dyeing temperature Dyeing time 
Bright shades 0.05 - 0.2 g/l 25 - 60°C 10 - 20 min 
Medium shades 0.3 - 0.8 g/l 25 - 60°C 10 - 20 min 
Dark shades 1.0 - 3.0 g/l 25 - 60°C 20 - 30 min 
 
 pH: 5,5 ± 0,5 
 Buffer: The dyebaths are preferably buffered with  
     8    g/l   sodium acetate trihydrate  
  + 0,4 ml/l acetic acid for pH 5.6 
 Water quality: preferably deionized  
 Sealing: preferably with Anodal® ASL (one or two stage).  
 
 
3. Setting the Dyebath 
 
When setting the dyebath, care must be taken that the dyestuff is well dissolved. Dissolve the 
dye preferably with hot water (80°C) in a separate container (approx. 5 parts water to 1 part 
dye). Then this mother solution will be added to the dyebath while stirring. 
 5. Special remarks 
 
 - Unsealed dyeings are virtually unstrippable in diluted nitric or sulphuric acid.  
   They can be  stripped in nitric acid 10 % + potassium permanganate 5 %.  
   After the treatment in Potassium permanganate, neutralization must be carried out for 1-5 min 
   in a sodium bisulphite 5 % solution. 
 
 - The dyebaths are sensitive to aluminium; anodized objects should therefore be 
  rinsed thoroughly before dyeing.  
 
 - Shading : 
   Sanodye® Brown R can be used not only as a straight colour for red-brown tones but also as 
   an interesting combination element, e.g. together with Sanodye® Golden Orange RLW for 
   gold shades. 
 
 - Prevention of mould formation : 
            An addition of an antimicrobial product can inhibit mould formation for a long time.  
            We recommend the addition of Nipacide CI 15 (See Technical Information) 25 – 50 mg/l. 
 
 
6. Disposal of the dyebaths 
 
Spent dyebaths can be readily precipitated with Anodal® WT-1 Liquid. The method is 
described in detail in the Technical Information bulletin for Anodal® WT-1 Liquid. 
 
The table below shows the additions required for precipitating Sanodye® Brown R. 
 
 
Precipitation FeCl3, 40 % Etching Anodal
® WT-1 Residual dye Residual Cu in filtrate    in filtrate 
method 
lye  Liquid  ml/g dye 
ml/g dye ml/g dye  mg/l mg/l 
A 5,0 - 0,8 12 0,3 
B 5,0 - 0,8 7 0,2 
C - 5,0 1,5 10 0,2 
 
 
 Many of their dyestuffs, pigments and chemicals are patented by Clariant in numerous industrial countries. 
® Trademark of Clariant registered in numerous countries. 
®* Trademark registered in numerous countries and licensed to Clariant. 
®+ Other Manufacturer's registered trade mark 
The signs ®, ®* and ®+ appear only at the first mention of the product. 
The information and recommendations presented here were compiled with the utmost care, but cannot be extended to cover 
every possible case. They are intended to serve as non-binding guidelines and must be adapted to the prevailing conditions. 
 
4. Lightfastness of the Dyeings 
 
Lightfastness of dark dyeings (12 µm):     Note  5-6  (ISO 2135). 

 

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