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SANODAL BLACK 2LW
Sanodal® Black 2LW
Sanodal® Black 2LW is a homogeneous, water-soluble dye which is distinguished by high fastness to
light, weather and heat.
Sanodal® Black 2LW is suitable for interior and exterior architectural purposes.
1. Dye-specific data
Commercial form: fine granules
Shade: bluish black;
at low concentrations bluish grey shades
Chemical character: azo dye, heavy metal complex
Bulking volume: 800 g/l
Solubility in water: 50 g/l at 20°C
Storage stability: virtually unlimited, store containers closed tightly
Ecotoxicological data: see Safety Data Sheet.
2. Application conditions
temperature Dyeing Dyeing time
Standard coating thickness (12 µm) 0,1 – 10 g/l 25 – 60°C 10 – 20 min
Standard coating thickness (12 µm) 10 g/l 55 – 60°C 15 – 20 min
Sanodal layers (25µm) 10 g/l 55 – 60°C 30 – 40 min
pH: 4,4 ± 0,4
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
Sanodal® Black 2LW is distinguished by outstanding lightfastness.
Lightfastness of Sanodal® dyeings: rating > 9 (ISO 2135).
5. Special remarks
- Unsealed dyeing can be stripped with nitric acid.
- The dyebaths are sensitive to aluminium; anodized objects should therefore be rinsed
thoroughly before dyeing.
- 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 Sanodal® Black 2LW.
Anodal WT-1 Residual Chrome
Precipitation FeCl3 40 % Etching lye
method ml/g dye ml/g dye ml/g dye Liquid dye in content in the filtrate the filtrate
A 1,8 - 0,8 < 1 < 0,05
B 1,8 - 0,8 < 1 < 0,05
C - 1,8 0,8 < 1 < 0,05
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.