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SANODYE BLACK OA

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SANODYE BLACK OA

Sanodye Black OA   Homogeneous, metal free, water-soluble dye for the dyeing of anodized aluminium.    Sanodye® Schwarz OA is distinguished by its high fastness to light and heat as we
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Sanodye Black OA  
 
 
 
 
Homogeneous, metal free, water-soluble dye for the dyeing of anodized aluminium. 
 
Sanodye® Schwarz OA is distinguished by its high fastness to light and heat as well as by its strong 
dyeing power. 
  
Clariant (Switzerland) Ltd. 
 Sanodye® Black OA 
16.09.2008 1 102782 
1. Dye-specific data 
 
 Commercial form: fine granules 
 Chemical character: azo dye, not metallized 
 Bulking volume: 850 g/l 
 Solubility in water: 20 g/l at 20°C 
 Storage stability: virtually unlimited, store containers closed tightly  
 Ecotoxicological data: see Safety Data Sheet. 
 
 
2. Application conditions 
  
  
 Concentration 
temperature Dyeing Dyeing time 
Standard coating thickness  (12 µm) 10 g/l 55 - 60°C 10 - 20 min 
Standard coating thickness  (25 µm) 10 g/l 55 - 60°C 30 - 45 min 
 
 pH: 5.5 ± 0,5 
 Buffer: The dyebaths have to be buffered with 
     8    g/l   sodium acetate trihydrate  
  + 0,4 ml/l acetic acid, pH 5.6 
 Water quality: preferably deionized 
 Sealing: preferably with Anodal® ASL (one or two stage). 
 
 
3. Preparation of the dyebath 
 
When preparing the dyebath care must be taken that the dye is well dissolved. 
The dye can be dissolved in deionized water (80 – 90°C) 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 
 
 Sanodye® Black OA is distinguished by high lightfastness. 
 Lightfastness of Sanodal® dyeings: rating > 8  (ISO 2135). 
Clariant (Switzerland) Ltd.  Sanodye
® Black OA 
16.09.2008 2 102782 
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. 
 
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 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 Sanodye® Black OA. 
 
 
Anodal WT-1 Residual    Dye reduction 
Precipitation 
method FeClml/g dye 3, 40% Etching lyeml/g dye Liquid dye in      in % related     
ml/g dye the filtrate to conc. 
mg/l dyebath   
A 2.0 - 0.7 ~ 1 > 99.9 
B 2.0 - 0.7 ~ 400 ~ 96 
C - 2.0 0,8 ~ 3400 ~ 66 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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. 
 
Clariant (Switzerland) Ltd. 
 Sanodye® Black OA 
16.09.2008 3 

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