Sanodye Brown R (Brown)
Brown R is a uniform, water-soluble dye suitable for aluminum anodizing adsorption dyeing. This dye is known for its ability to achieve an eye-catching reddish-brown color and technical reliability in application, and is recommended for indoor use only.
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Brown R is a uniform, water-soluble dye suitable for aluminum anodizing adsorption dyeing. This dye is known for its striking reddish-brown color and technical reliability in application, and is only recommended for indoor use.
1. Dye Technical Parameters
Appearance:Granular, black-brown
Composition:Metal complex azo dye
Density:550 g/l
Solubility:At 20°C, 300g/l
Storage period:Can be stored indefinitely in sealed original packaging
Safety data:See safety data sheet for details.
2. Application Conditions
|
Concentration
|
Dyeing temperature
|
Dyeing time
|
|
| Light color |
0.05 - 0.2g/l
|
25 - 60°C
|
10 - 20 min
|
| Medium color |
0.3 - 0.8 g/l
|
25 - 60°C
|
10 - 20 min
|
| Dark color |
1.0 - 3.0 g/l
|
25 - 60°C
|
20 - 30 min
|
Applicable pH:5.5±0.5
pH buffering:It is recommended to add Anodal Dye Buffer to adjust to pH 5.6
Water quality requirements:Deionized water is recommended
Sealing requirements:It is recommended to use Anodal® ASL (one-step or two-step)
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 five times the amount of hot water (80-90°C) compared to the dye. Then, stir the pre-dissolved stock solution into the dyeing bath.
4. Dye Lightfastness
Dark color (12 µm):5-6 (ISO 2135)
5. Instructions
- Unsealed dyed aluminum cannot be decolorized with dilute nitric acid or sulfuric acid. It can be treated with 10% dilute nitric acid + 5% potassium permanganate for decolorization. After treatment, neutralize in a 5% sodium bisulfite solution for 1-5 minutes.
- This dye is sensitive to aluminum, so workpieces that have been anodized must be thoroughly cleaned before dyeing.
- Color mixing: Brown R can not only be used directly to dye reddish-brown but is also commonly used as a mixing dye, for example, mixed with Gold Orange RLW to create gold.
6. Treatment of Waste Dyeing Solution
Waste dyeing solution can be treated with Anodal WT-1 for wastewater treatment. The following table lists the treatment methods for dyeing wastewater:
| Precipitation method |
FeCl3, 40%
(ml/gDye
)
|
Alkaline etching solution
(ml/g dye
)
|
Anodal WT-
1
(ml/gDye
)
|
Filtrate residue
Dye
(mg/l)
|
Filtrate residue
Cu(mg/l)
|
| A |
5.0
|
- |
0.8
|
12
|
0.3
|
| B |
5.0
|
- |
0.8
|
7 |
0.2
|
| C | - |
5.0
|
1.5
|
10 |
0.2
|
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