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SANODYE BLUE 2LW gran
Sanodye® Blue 2LW Granulated
Sanodye® Blue 2LW Granulated is a homogeneous, water-soluble dye which is distinguished by
outstanding fastness to light, weather and heat.
Sanodye® Blue 2LW Granulated is suitable for interior and exterior architectural purposes.
1. Dye-specific data
Commercial form : fine granules
Shade : pale blue to navy
Chemical character : anthraquinone dye, not metallized
Bulking volume : 750 g/l
Solubility in water : 5 g/l at 20°C
Storage stability : virtually unlimited, store containers closed tightly
Ecotoxicological data : see Safety Data Sheet.
2. Application conditions
ConcentrationDyeing temperature Dyeing time
Standard coating thickness (12 µm)0.05 - 3 g/l 25 - 60°C 10 - 20 min
Sanodal coating thickness (25 µm) 3 g/l 25 - 35°C 45 - 60 min
pH : 5.5 ± 0.5
Buffer : The dyebaths are preferably buffered with
5 g/l ammonium acetate
+ 0.5 ml/l acetic acid for 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 is preferably dissolved in hot water (80°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® Blue 2LW Granulated 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 Sanodye® Blue 2LW
Precipitation FeCl40% Etching lye
method , ml/g dye Anodal WT-1 Residual Dye reduction
3Liquid dye in in % related
ml/g dye ml/g dye the filtrate to conc.
A 2.5 - 0.6 < 1 > 99.9
B 2.5 - 0.6 < 1 > 99.9
C - 2.5 1.0 ~ 4.5 ~ 99.8
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.