Sanodure Yellow Brown 2G
Yellow-brown 2G is a uniform, water-soluble dye used for adsorbing on the surface of anodized aluminum, and this dye is only suitable for indoor use.
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Yellow-brown 2G is a uniform, water-soluble dye used for adsorbing onto the surface of anodized aluminum, and this dye is only suitable for indoor use.
1. Dye Technical Parameters
Appearance:Fine particles
Composition:A mixture of three azo dyes, two of which contain heavy metals, and one does not.
Density:900g/l
Solubility:At 20°C, 20g/l
Shelf life:In sealed original packaging, it can be stored for 10 years.
Safety Data:See the safety data sheet for details.
2. Application Conditions
|
Concentration
|
Dyeing Temperature
|
Dyeing Time
|
|
| Bright Color |
0.05-0.2 g/L
|
25 - 60℃
|
10 - 20 min
|
| Medium |
0.3-0.8 g/L
|
25 - 60℃
|
10 - 20 min
|
| Dark Color |
1.0-3.0 g/L
|
25 - 60℃
|
20 - 30 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:Deionized water is preferred.
Sealing Requirements:It is best to use Anodal® ASL (one-step or two-step).
3. Preparation of Bath Solution
When preparing the bath solution, it must be fully dissolved.
It is best to pre-dissolve in a separate container using five times the amount of dye in hot water (80-90°C). Then, stir the pre-dissolved stock solution into the dyeing bath.
4. Dye Lightfastness
Lightfastness of Deep Dyeing:5-6 (ISO 2135).
5. Instructions
- Undyed coloring can be removed with dilute nitric acid (30%). The best removal method can be treated with 10% nitric acid + 5% potassium permanganate. After treatment with potassium permanganate, it must be neutralized in a 5% sodium bisulfite solution for 1-5 minutes.
- This dye is sensitive to aluminum, and anodized workpieces must be thoroughly cleaned before dyeing.
- This dye can be mixed with Sanodure Bordeaux RL to achieve red, or with Sanodye Golden Orange RLW to achieve yellow.
Preventing Mold Growth:Adding a biocide can inhibit mold growth for a long time. It is recommended to use 25-50mg/L Nipacide Cl 15 MV (for details, please refer to relevant technical data).
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%
(ml/gDye)
|
FeCl3, 40%
(ml/gDye)
|
Anodal WT-1
(ml/gDye)
|
Residual Dye in Filtrate
(mg/l)
|
Residual in FiltrateCu
(mg/l)
|
| A |
3.0
|
- |
1.0
|
<1
|
0.05
|
| B |
3.0
|
- |
0.7
|
<0.5
|
0.05
|
| C | - |
3.0
|
1.4
|
<0.2
|
0.05
|
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