Description

Corundumchromiumpink CAS NO 68512-46-9 is an inorganic pigment belonging to the complex metal oxide family, specifically a chromium-doped alumina (corundum) structure. This compound is valued for its exceptional thermal stability, chemical inertness, and vibrant, durable pink coloration. It is primarily utilized in industries requiring high-performance, fade-resistant pigments for demanding applications. Key sectors include advanced ceramics, specialty coatings, plastics, and construction materials where long-term color fidelity under harsh conditions is critical.

Application

• High-Temperature Ceramic Glazes and Bodies: Imparts stable pink to red hues in porcelain, sanitaryware, and technical ceramics fired at elevated temperatures.
• Engineering Plastics and Masterbatches: Used as a colorant for polymers processed at high temperatures, such as polycarbonate, nylon, and PBT, where organic pigments would degrade.
• Industrial and Architectural Coatings: Provides durable, weather-resistant coloring for powder coatings, coil coatings, and exterior paints exposed to UV light and environmental extremes.
• Construction Materials: Colors concrete, mortar, roofing granules, and paving stones with excellent lightfastness and alkali resistance.
• Specialty Glass and Enamels: Acts as a colorant in borosilicate glass, art glass, and vitreous enamel frits.
• Cosmetic Pigments (Approved Grades): Used in decorative cosmetics like eyeshadows and blushes for its pure color and skin safety, subject to appropriate regulatory compliance (e.g., FDA, EU).
• Artists' Colors: A premium pigment for artists' paints (oil, acrylic, watercolor) requiring permanence and high chromatic strength.

Basic Information

Product Name	Corundumchromiumpink
CAS No.	68512-46-9
Molecular Formula	Al₂O₃:Cr (Cr-doped α-Al₂O₃)
Molecular Weight	~101.96 + Cr (Variable based on doping level)
Synonyms	Chromium-doped Alumina; Pink Corundum; Alumina Chromium Pink; C.I. Pigment Red 226; Aluminum Oxide Chromium; Chromium Alumina Pink; Corundum Pink; Synthetic Ruby Pigment; α-Alumina:Cr³⁺; Ceramic Pink Pigment
EINECS	Contact for details

Quality Control

Our Corundumchromiumpink is manufactured under a strict quality management system. Each batch is tested to ensure consistent color performance, chemical purity, and physical properties. Key parameters such as chroma, particle size distribution, and heavy metal content are rigorously controlled. Certificates of Analysis (COA) detailing lot-specific results are provided with every shipment. We can supply grades compliant with relevant industry standards for ceramics, plastics, and cosmetics upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep the container sealed to prevent moisture absorption and contamination from foreign materials. Separate from incompatible substances.

Specification

Item	Specification
Appearance	Fine pink powder
Color Index	Pigment Red 226
Particle Size (D50)	0.5 - 2.0 µm
Oil Absorption	15 - 25 g/100g
pH (10% slurry)	6.0 - 8.0
Loss on Drying (105°C)	≤ 0.5 %
Ignition Loss (1000°C)	≤ 1.0 %
Soluble Salts	≤ 0.3 %
Heavy Metals (as Pb)	≤ 20 ppm
Identification (XRD)	Corresponds to α-Al₂O₃ structure

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.