Sanodal Black 2LW (Black)
Black 2LW is a uniform, water-soluble dye with excellent lightfastness and weather resistance, suitable for both indoor and outdoor use.
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Product Details
Black 2LW is a uniform, water-soluble dye with excellent lightfastness and weather resistance, suitable for both indoor and outdoor use.
1. Dye Technical Parameters
Appearance:Fine black particles
Composition:Heavy metal complex azo dye
Net content:1KG
Shelf life:Can be stored for 10 years in sealed original packaging
Density:800g/l
Solubility:50g/l, 20°C
Color:Blue-black, appears blue-gray at low concentrations
Safety Data:See Safety Data Sheet (MSDS) for details
2. Application Conditions
|
Concentration
|
Dyeing temperature
|
Dyeing time
|
|
| Gray standard film thickness (12um) |
0.1 - 10g/L
|
25 - 60°C
|
10 - 20 min
|
|
Black standard film thickness (12um)
|
10g/L
|
55 - 60°C
|
15 - 20 min
|
|
Outdoor use film thickness (25um)
|
10g/L
|
55 - 60°C
|
30 - 40 min
|
3. Bath Solution Preparation
When preparing the bath solution, it must be fully dissolved.
It is best to pre-dissolve in a separate container using 5 times the amount of hot water (80-90°C) compared to the dye. Then, stir the pre-dissolved mother liquor into the dyeing bath.
4. Dye Lightfastness
Black 2LW has excellent lightfastness.
Lightfastness:Grade > 8 (Test standard: ISO 2135).
5. Instructions
- Unsealed dyeing can be removed with diluted nitric acid.
- This dye is sensitive to aluminum, and workpieces that have been anodized must be thoroughly cleaned before dyeing.
- To prevent mold growth: Adding an antibacterial agent can inhibit mold growth for a long time. It is recommended to use 25-50mg/L
6. Treatment of Waste Dyeing Solution
Waste dyeing solution can be treated with Anodal WT-1, and the following table lists the treatment methods for dyeing waste liquid:
|
Precipitation method
|
FeCl3, 40%
(Dye)ml/gAlkali etching solution
|
Anodal WT-1
(Dye)ml/gAlkali etching solution
|
Residual dye in filtrate
(Dye)ml/gAlkali etching solution
|
)
(Dye)mg/l<1
|
| A |
1.8
|
- | 0.8 | <1 |
| B |
1.8
|
- | 0.8 | <1 |
| C | - | 1.8 | 0.8 | <1 |
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