Sanodure Grey NL Liquid (Gray)
Gray NL is a uniform water-soluble dye suitable for aluminum anodizing adsorption dyeing. The hue is gray with a slight reddish-yellow tint.
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Gray NL is a uniform water-soluble dye suitable for aluminum anodizing adsorption dyeing. The hue is gray with a slight reddish-yellow tint.
1. Dye Technical Parameters
Appearance:Black liquid
Color:Gray, with a slight reddish-yellow hue
Composition:Heavy metal azo complex dye
Density:1130g/l
Solubility:Can be mixed with water in any proportion
Storage period:Under sealed original packaging, can be stored for at least 1 year at 0-50°C
Safety data:See the Safety Data Sheet (MSDS) for details
2. Application Conditions
|
Concentration
|
Dyeing temperature
|
Dyeing time
|
|
|
Light color
|
0.1 - 0.5 g/l
|
20 - 25°C
|
10 - 20 min
|
|
Medium color
|
1.0 - 3.0 g/l
|
20 - 25°C
|
10 - 20 min
|
|
Dark color
|
5.0 - 10.0 g/l
|
20 - 25°C
|
20 - 40 min
|
Applicable pH:5.5-6.0
Buffer adjustment:It is recommended to add Anodal Dye Buffer to adjust to pH 5.6
Dyeing requirements:To ensure uniform dyeing, we recommend stirring the dye bath during dyeing
Water quality requirements:Deionized water is preferred
Sealing:It is recommended to use Anodal® ASL
3. Bath Liquid Preparation
Since this dye is liquid, it can be added directly when opening or replenishing the dye bath.
4. Dye Resistance
Lightfastness (ISO 2135).
Light gray:5-6 grade
Medium gray:6-7 grade
Dark gray:7-8 grade
Heat resistance.
The heat resistance of this dye is relatively poor, and the heat resistance test results for medium gray depth are as follows:
- 1 h, 150°C, slightly turns green;
- 1 h, 200°C, slightly turns yellow.
5. Description
Stability:This dye is only suitable for room temperature dyeing, with dyeing temperatures not exceeding 30°C
Impurities:This dye is sensitive to sulfate and aluminum ions, so the oxidized workpiece must be thoroughly cleaned before dyeing.
Color mixing:This dye has excellent color mixing properties and can be mixed with different dyes to achieve various colors, for example, it can be mixed with Sanodure Fast Gold L to obtain green, and mixed with Sanodure Fast Bronze L or Sanodure Bronze 2LW to obtain reddish bronze.
6. Disposal of Waste Dyeing Liquid
Waste dyeing liquid can be precipitated using Anodal WT-1 Liquid, and the following table lists the substances required for precipitating gray NL:
| Precipitation method |
FeCl3, 40%
(ml/gDye)
|
Alkaline etching solution
(ml/gDye)
|
Anodal WT-1
(ml/gDye)
|
Filtrate residual dye
Dye
(
mg/l
)
|
| A |
2.0
|
- |
0.2
|
〈1
|
| B |
2.0
|
- |
0.2
|
~12
|
| C | - |
2.0
|
0.3
|
~320
|
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