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Highly stable, lightfast black pigment specifically engineered for anodized aluminum finishes.
Excellent dispersion characteristics in standard anodizing electrolytes without requiring additional stabilizers.
Delivers deep, uniform black shade with superior color consistency across batch and production runs.
Optimized for low-voltage (LW) anodizing processes, enabling energy-efficient operation and reduced processing time.
Compliant with REACH and RoHS directives, supporting sustainable and regulatory-compliant manufacturing.
Aerospace components requiring durable, corrosion-resistant black anodized surfaces.
Architectural aluminum profiles for façades, curtain walls, and interior cladding systems.
Consumer electronics housings, including smartphones, laptops, and wearables.
Automotive trim parts and interior aluminum components subject to stringent aesthetic and durability standards.
Industrial machinery enclosures where high UV resistance and long-term color stability are critical.
| Chemical Type | Organometallic complex pigment |
| Product Form | Free-flowing powder |
| Appearance | Jet-black granular solid |
| Primary Applications | Black coloring of anodized aluminum (low-voltage process) |
| Key Features | Low-voltage compatibility, high thermal stability, excellent lightfastness |
| Storage Conditions | Store in cool, dry place; protect from moisture and direct sunlight |
| Shelf Life | 24 months under recommended storage conditions |
| Regulatory Compliance | REACH registered, RoHS compliant, non-hazardous per GHS classification |
Q1: What is the primary application of Sanodal Black 2LW pigment?
A: Sanodal Black 2LW is a high-performance, solvent-stable black pigment dispersion specifically developed for use in anodizing sealants and electrolytic coloring processes. It is widely employed to achieve deep, uniform black tones on aluminum surfaces during post-anodizing treatment.
Q2: Is Sanodal Black 2LW compatible with nickel-based and cobalt-free sealants?
A: Yes — Sanodal Black 2LW is formulated for compatibility with both nickel-containing and nickel-free (including cobalt-free) hot and cold sealants. Its stable dispersion ensures consistent color development without compromising seal integrity or corrosion resistance.
Q3: How should Sanodal Black 2LW be incorporated into sealant baths?
A: The pigment should be added gradually under gentle agitation to avoid localized overdosing. Pre-dilution with deionized water or compatible sealant base is recommended before dosing. Final concentration is typically adjusted based on desired shade depth and bath volume, and generally ranges from 0.1% to 2% by weight of the total sealant solution.
Q4: Does Sanodal Black 2LW affect sealing performance or corrosion resistance?
A: When used within recommended dosage ranges and properly dispersed, Sanodal Black 2LW does not negatively impact standard sealing performance metrics — including dye uptake stability, pore closure efficiency, or salt-spray resistance — as verified in typical industrial anodizing conditions.
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E-mail: wangxingqiang@ericwchem.com
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