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SANODYE BULE G
Sanodye® Blue G
Sanodye® Blue G is a homogeneous, water-soluble dye which is distinguished by outstanding
fastness to light, weather and heat.
Sanodye® Blue G 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 : 700 g/l
Solubility in water : 3 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 30 - 40°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 (60-80°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 G 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 G.
Anodal WT-1 Residual Dye reduction
Precipitation FeCl3 40% Etching lye Liquid dye in in % related
method ml/g dye ml/g dye ml/g dye the filtrate to conc.
A 2.5 - 0.3 < 1 > 99.9
B 2.5 - 0.3 < 1 > 99.9
C - 2.5 0.5 ~ 2 ~ 99.9