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SANODAL BLACK GL PASTE

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SANODAL BLACK GL PASTE

Sanodal® Black GL Paste        Sanodal® Black GL Paste is a homogeneous, water-soluble dye which is distinguished by high  fastness to light and weather.       Sanodal® Black GL Paste is suit
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Sanodal® Black GL Paste 
 
 
 
Sanodal® Black GL Paste is a homogeneous, water-soluble dye which is distinguished by high 
fastness to light and weather.  
 
 
Sanodal® Black GL Paste is suitable for interior and exterior architectural purposes.  

1. Dye-specific data
 
 Shade: greenish black;  
  at low concentrations bottle green shades 
 Appearance: black paste 
 Chemical character: homogeneous azo metal complex dye 
 Density (20°C): 1150 g/l 
 Solubility in water: miscible  
 Storage stability: at least 1 year in closed containers between 0°C 
  and 50°C 
 Ecotoxicological data: see Safety Data Sheet. 
 
 
2. Application conditions
 
 
 Concentration 
temperature Dyeing Dyeing time 
Bottle green shades 
Standard layers (12µm) 0.1 - 10 g/l 25 - 60°C 10 - 20 min 
Black dyeings 
Standard layers  (12 μm) 30 g/l 55 - 60°C 15 - 20 min 
Sanodal layers (25 μm) 30 g/l 55 - 60°C 30 - 40 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, pH 5.6 
 Water quality: preferably deionized; dyeing is also possible in tapwater, but 
  this can reduce the service life of the bath 
 Sealing: preferably with Anodal® ASL (one or two stage). 
 
 
3. Setting the dyebath
 
Before using, the content of the barrel has to be stirred in order to homogenize the paste. 
When preparing the dyebath care must be taken that the dye is well dissolved. The dye can be 
dissolved in deionized water in a separate container (5 parts water to 1 part dye). This stock 
solution is then stirred into the dyebath. 

 
4. Lightfastness of the dyeings
 
 Sanodal® Black GL Paste is distinguished by outstanding lightfastness. 
 Lightfastness of Sanodal® dyeings: rating > 9 (ISO 2135). 
 
 
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 sulphate and aluminium; anodized objects should therefore be 
   rinsed thoroughly before dyeing.  
 
 
6.  Disposal of the dyebaths
 
 Spent dyebaths must be disposed of; e.g. with Anodal® WT-1 Liquid. The precipitation 
method is described in detail in the Technical Information bulletin for Anodal WT-1 Liquid. 
 
  The table below shows the additions required for precipitating Sanodal® Black GL Paste. 
 
Precipitation FeCl3, 40 % Etching lye Anodal WT-1 
Residual   Cobalt 
method ml/g dye ml/g dye ml/g dye 
Liquid      dye in        content in the filtrate the filtrate 
mg/l mg/l 
A 1.0 - 0.4 < 1 < 0.2 
B 1.0 - 0.4 ~ 60 < 1.0 
C - 0.5 0.8 ~ 30 < 1.0 
 
 
 Many of their dyestuffs, pigments and chemicals are patented by Clariant Ltd. or ist affiliates in numerous industrial countries. 
® Trademark registered by Clariant Ltd or Clariant GmbH in numerous countries. 
* Trademark licensed  to Clariant Ltd in numerous countries. 
+ Manufacter’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. 

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