Sanodure® Olive Brown 2R 
 
 
 
 
Homogeneous, water soluble dyestuff for the adsorptive dyeing of anodised aluminium. 
 
 
It brownish olive shade makes Sanodure® Olive Brown 2R especially suited for military articles. 
However, this olive brown tone is also a particulary interesting main element for various dull shades. 
 
Sanodure® Olive Brown 2R can be used in combination with other Aluminium dyes, e. g. for 
imitatimg integrally or electrolytically produced dyeings, and as a favourably-priced alternative for 
interior application. 
 
 
Only recommended for interior use. 
 1. Dye-specific Data 
 
Commercial form: fine granules 
Chemical character: Azo-dyestuff, metal complex  
Density: 600 g/l 
Solubility in water: 30 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. 
 
 
4. Lightfastness of the Dyeings 
 
Lightfastness of dark dyeings (12 µm):     Note  6  (ISO 2135). 
 5. Special remarks 
 
- Sensitivity to ions 
  The dyebaths are sensitive to sulphate and aluminium; anodized objects should therefore be 
   rinsed thoroughly before dyeing.  
 
- Dyeing at room temperature : 
  At about 20 °C / 68 °F more constant results can be obtained in standing baths than at 60 °C /  
  140 °F. However, the bath concentration and the dyeing time must be increased accordingly. 
 
 - Strippability of dyeings 
   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. 
 
 - Shading 
   The following Aluminium dyes are particularly suitable for combinations with Sanodure® Olive 
  Brown 2R : 
 
  
Combination element Resulting shade 
 
  
- Sanodure® Grey NL Liquid - olive grey 
- Sanodure® Bronze 2LW - greenish bronze 
- Sanodure® Fast Bronze L - reddish bronze 
- Sanodal® Black 2LW - anthracite grey 
 
 
-  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 Sanodure® Olive Brown 2R. 
 
 
Precipitation FeCl, 40 % Etching Anodal
® WT-1 Residual dye Residual Ni 
method 
3lye Liquid  in filtrate  in filtrate 
ml/g dye ml/g dye ml/g dye mg/l mg/l 
A 3,0 - 0,7 < 1 < 0,05 
B 3,0 - 0,7 < 0,1 < 0,1 
C - 3,0 1,4 < 0,2 < 0,1 
 
 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.