Ultramarine Blue

Ultramarine Blue

Premium inorganic Ultramarine Blue pigment, celebrated for its unique reddish-blue hue, exceptional brightness, and outstanding heat stability. Formulated for heavy-metal-free applications requiring superior color purity, high transparency, and reliable UV resistance.

  • Color Index: Pigment Blue 29 (C.I. 77007)

  • Chemical Class: Sodium Aluminum Sulfosilicate

  • Primary Function: High-brilliance coloration, optical whitening (blueing effect), and heat stabilization

  • Standard Packaging: 25kg multi-wall paper bags / Custom bulk pallets

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Ultramarine Blue (Pigment Blue 29) is a highly versatile, synthetic inorganic pigment derived from a complex sodium aluminum sulfosilicate structure. Renowned for its clean, vibrant reddish-blue shade that cannot be replicated by organic alternatives, this pigment features a unique non-toxic profile, zero migration tendencies, and exceptional thermal durability. It is widely applied across sectors requiring clean color performance under rigorous processing setups.

Performance Advantages

  • Optical Whitening (Blueing Effect): Extensively utilized at very low concentrations to neutralize the natural yellowish tint found in raw white plastics, coatings, and textiles, resulting in a cleaner, more brilliant white finish.

  • Extreme Heat & Chemical Stability: Possesses exceptional thermal endurance up to 350°C, rendering it completely stable in high-temperature polymer processing. It exhibits outstanding resistance to alkalis, ensuring durable performance in alkaline matrices like concrete and lime paints.

  • Safe & Non-Migratory: The stable, inert crystal structure prevents pigment bleeding or migration across composite layers, making it safe for consumer goods and sensitive packaging applications.

Primary Industrial Applications

  • Plastics & Masterbatch Compounding: The industry standard for coloring engineering polymers, PVC profiles, polyolefins, and synthetic fibers where processing demands maximum heat tolerance.

  • Industrial & Decorative Coatings: Used in architectural interior/exterior paints, powder coatings, high-heat industrial enamels, and artist colors requiring clean masstones or tinting clarity.

  • Printing Inks: Applied in screen printing, packaging graphics, and industrial gravure inks where low abrasiveness and high transparency are necessary.

  • Construction & Building Materials: Utilized to tint cement, concrete, stucco, tiles, and grouting mortars due to its excellent alkali resistance and lightfastness.

Technical Specifications

Property / Parameter Standard Industrial Value
Color Index Number C.I. 77007 (Pigment Blue 29)
Specific Gravity (g/cm³) 2.35 – 2.40
Oil Absorption (g/100g) 25 – 35
pH of Aqueous Extract 7.0 – 8.5
Heat Resistance (°C) Up to 350°C
Light Fastness (Full Shade) 7 – 8 (Excellent)
Free Sulfur Content (%) ≤ 0.20

Storage & Handling

Store in a cool, dry, and well-ventilated warehouse area in original, securely sealed packaging. Protect from acidic environments and vapors, as contact with strong acids can release hydrogen sulfide gas and cause color degradation. Under proper, dry storage conditions, the product maintains long-term structural and color stability indefinitely. Material Safety Data Sheets (MSDS) and batch-specific Certificates of Analysis (COA) accompany every shipment.