Sanodal Black GL PASTE (Black)
Black GL paste is a uniform, water-soluble dye with excellent lightfastness and weather resistance. This product is suitable for both indoor and outdoor building materials.
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Product Details
Black GL paste is a uniform, water-soluble dye with excellent lightfastness and weather resistance. This product is suitable for indoor and outdoor building materials.
1. Dye Technical Parameters
Appearance:Black paste
Composition:Heavy metal complex azo dye
Shelf life:In sealed original packaging, can be stored for 5 years at 5-30°C
Color:Dark green, shows deep green at low concentrations
Density:1150g/l, 20°C
Solubility:Easily soluble
Safety data:See safety data sheet (MSDS) for details
2. Application Conditions
|
Concentration
|
Dyeing temperature
|
Dyeing time
|
|
|
Dark green standard film thickness (12um)
|
0.1 -10 g/l
|
25 - 60℃
|
10 - 20 min
|
|
Black standard film thickness (12um)
|
30 g/l
|
55 - 60℃
|
15 - 20 min
|
|
BlackSanodalFilm thickness (25um)
|
30 g/l
|
55 - 60℃
|
30 - 40 min
|
Applicable pH:5.5±0.5
pH adjustment:It is recommended to add Anodal Dye Buffer to adjust to pH 5.6
Water quality requirements:It is best to use deionized water, tap water can also be used, but it will reduce the lifespan of the dye bath
Sealing:It is recommended to use Anodal® ASL
3. Preparation of Dye Bath
- Before using the product, the black GL paste must be stirred evenly.
- When preparing the dye bath, it must be fully dissolved.
- It is best to pre-dissolve in a separate container with 5 times the amount of hot water (80-90°C) compared to the dye. Then, stir the pre-dissolved mother liquor into the dyeing tank.
4. Dye Lightfastness
Black GL paste has excellent lightfastness.
Lightfastness:Grade >8 (Test standard: ISO 2135).
5. Instructions
- Unsealed dyed aluminum parts cannot be bleached with dilute nitric acid and sulfuric acid. They can be decolorized with 10% nitric acid + 5% potassium permanganate. After treatment with potassium permanganate, they must be neutralized in a 5% sodium bisulfite solution for 1-5 minutes.
- This dye is sensitive to aluminum salts and sulfates, and workpieces that have been anodized must be thoroughly cleaned before dyeing.
6. Treatment of Waste Dye Liquor
Waste dye liquor can be treated with Anodal WT-1, and the following table lists the treatment methods for dye waste:
| Precipitation method |
FeCl3, 40 %
(ml/gDye)
|
Alkaline etching solution
(ml/gDye)
|
Anodal WT-1
(ml/g(Dye)
|
Residual dye in filtrate
(mg/l)
|
| A |
1.0
|
- |
0.4
|
<1
|
| B |
1.0
|
- |
0.4
|
~ 60
|
| C | - | 0.5 | 0.8 |
~ 30
|
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