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Exceptional blackness and high chroma for deep, rich color intensity in anodized aluminum finishes.
Optimized for low metal content (MLW) formulations, supporting sustainable anodizing processes with reduced environmental impact.
Superior lightfastness and weather resistance, maintaining color integrity under prolonged UV exposure and outdoor conditions.
Excellent dispersion stability in standard anodizing electrolytes, ensuring uniform dye uptake and consistent batch-to-batch performance.
Compatible with mid-temperature and cold anodizing processes, offering flexibility across common industrial aluminum surface treatment lines.
Architectural aluminum façades and curtain wall systems requiring durable, fade-resistant black finishes.
Automotive trim components, including grilles, mirror housings, and interior accents.
Consumer electronics enclosures such as smartphone frames, laptop bodies, and tablet casings.
Industrial equipment housings where high aesthetic quality and long-term corrosion resistance are critical.
High-end furniture and lighting fixtures featuring anodized aluminum decorative surfaces.
| Chemical Type | Organic anionic dye (metal-free) |
| Product Form | Liquid concentrate (aqueous solution) |
| Appearance | Deep black, clear to slightly hazy liquid |
| pH (1% aqueous solution) | 5.0 – 6.5 |
| Solubility | Fully soluble in deionized water |
| Primary Applications | Anodized aluminum coloring (Type II & III) |
| Key Features | Low metal content, high lightfastness, excellent dyeing uniformity |
| Benefits | Reduced wastewater treatment burden, consistent shade reproducibility, compliance with RoHS and REACH |
Q1: What is the primary application of Sanodal Deep Black MLW Pigment?
A: Sanodal Deep Black MLW Pigment is specifically developed for high-performance black coloration in anodized aluminum finishes, particularly in architectural and industrial hard anodizing processes where deep, uniform, and lightfast black appearance is required.
Q2: Is this pigment compatible with standard sulfuric acid anodizing electrolytes?
A: Yes, Sanodal Deep Black MLW Pigment is formulated for compatibility with conventional sulfuric acid-based anodizing baths and is designed to integrate smoothly into existing process lines without requiring major bath modifications.
Q3: How does Sanodal Deep Black MLW differ from conventional organic black dyes?
A: Unlike standard organic dyes, Sanodal Deep Black MLW offers enhanced thermal stability and superior UV resistance, enabling improved color retention during post-anodizing sealing and long-term outdoor exposure — especially critical for façade and transportation applications.
Q4: What is the typical dosage range for optimal black intensity?
A: Dosage depends on bath conditions, alloy type, and desired shade depth, but it is typically used at low concentrations — generally ranging from 0.1% to 2% by weight relative to the anodizing bath volume — with fine-tuning recommended via lab-scale trials.
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E-mail: wangxingqiang@ericwchem.com
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Building A1, Jiete Industrial Park, Huangpu District, Guangzhou City, Guangdong Province, China
