Chromium Oxide Green — CI 77288 / CAS 1308-38-9

Description

1. Product Overview

Chromium Oxide Green (CI 77288 / CAS 1308-38-9) is a high-performance inorganic pigment composed of chromium(III) oxide, widely recognized for its exceptional color stability, chemical resistance, and durability. It is primarily used in coatings, ceramics, plastics, glass, construction materials, and specialty industrial applications requiring long-lasting green pigmentation. Its superior weather resistance, heat stability, and resistance to acids and alkalis make it a preferred choice for demanding environments. As a strategic pigment raw material, Chromium Oxide Green supports global industries where performance, reliability, and lifecycle value are critical.

2. Key Specifications & Technical Characteristics

• Chemical Composition: Chromium(III) Oxide (Cr₂O₃)
• CAS Number: 1308-38-9
• Color Index: CI Pigment Green 17 / CI 77288
• Purity Grade: Industrial grade, pigment grade; typically ≥98% Cr₂O₃ content (custom grades available)
• Physical Form: Fine powder
• Color Appearance: Deep, stable emerald green powder
• Particle Size: Typically controlled in the micron range for optimized dispersion and coverage
• Density: Approximately 5.1 g/cm³
• Heat Resistance: Excellent thermal stability, suitable for high-temperature processing applications
• Chemical Resistance: High resistance to acids, alkalis, solvents, and environmental degradation
• Lightfastness: Excellent UV and weathering resistance
• Packaging Options: 25 kg bags, 500 kg jumbo bags, or customized industrial packaging
• Shelf Life: Long-term stability when stored in dry, sealed conditions away from moisture contamination

3. Core Industrial Applications

• Coatings & Paints Industry: Used in industrial coatings, protective paints, powder coatings, and architectural finishes requiring superior weatherability and color retention.
• Ceramics & Glass Manufacturing: Applied as a high-temperature pigment for ceramic tiles, glazes, enamel coatings, and colored glass due to its thermal stability.
• Plastics & Polymers: Provides durable green coloration in engineering plastics, molded components, and outdoor polymer products where UV resistance is essential.
• Construction Materials: Used in colored concrete, paving blocks, roofing materials, and decorative building products for long-lasting appearance.
• Refractory Materials: Utilized in refractory bricks and high-temperature applications due to excellent heat resistance.

Performance Advantages: Chromium Oxide Green delivers superior durability compared with many organic pigments, maintaining color integrity under extreme heat, sunlight, and chemical exposure while offering long service life and reduced maintenance requirements.

4. Competitive Advantages

• Consistent Quality: Controlled manufacturing processes ensure stable color strength, purity, and particle distribution across production batches.
• Reliable Supply Capability: Suitable for bulk industrial procurement with scalable production capacity for international markets.
• Global Logistics Support: Available in export-ready packaging with containerized shipment solutions for large-volume buyers.
• Cost Efficiency: Long lifespan, high performance, and low replacement frequency provide strong lifecycle cost advantages.
• Environmental Benefits: Inorganic pigment structure provides excellent durability, reducing the need for frequent recoating and material replacement.
• Technical Documentation: Supports industrial buyers with specifications, quality certificates, safety data sheets (SDS), and compliance documentation.

5. Commercial & Supply Information

• Minimum Order Quantity (MOQ): BULK 20 MT
• Loading Capacity: Approximately 20–22 MT per 20-foot container (depending on packaging configuration)