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Demei focuses on the research, development, and production of inorganic iron oxide pigments. Our pigments cover iron oxide red, yellow, black, brown, green, orange, blue, etc.
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Product Details
Comprehensive information about our iron oxide pigments including specifications, applications, advantages, and more
Red Iron Oxide for Ceramic Coloring
High-performance inorganic pigment with excellent color stability, weather resistance, and broad application range.
The Heart of the Ceramic Kiln
Deqing Demi Pigment Technology Co., Ltd. understands the ancient and modern art of ceramic coloring. We recognize that in ceramic production, the pigment is a chemical reactant as much as a colorant. Our ceramic red series is manufactured with low carbon and sulfur levels to prevent glaze defects like pinholing. We provide the "Pyrometric Reliability" that helps industrial tile makers and studio potters achieve repeatable, vibrant reds and earthy tones.
Ceramic Red Usage Areas
- Floor and Wall Tiles: Mass coloration for "Through-Body" porcelain.
- Sanitary Ware: Warm, stable tones for bathroom ceramic fixtures.
- Pottery Glazes: Essential for producing "Tomato Red" and "Iron Lustre" glazes.
- Engobes & Slips: Fine-particle red for surface decoration and coating.
Ceramic Red Technical Specs
| Metric | Value | Standard |
| Iron Content (Fe2O3) | Min 95% | ISO 1248 |
| Heat Resistance | Up to 1300∘C | Kiln Test |
| Loss on Ignition (LOI) | Max 0.5% | ISO 787-2 |
| Sieve Residue (325 Mesh) | Max 0.2% | ISO 787-7 |
| Bulk Density | 0.7 - 1.1 g/cm³ | ISO 787-11 |
Core Advantages
- High-Temperature Stability: Maintains its red chroma even at high vitrification temps.
- Low Impurity: Reduced carbon and sulfur levels prevent glaze bubbling.
- Excellent Solubility: Dissolves evenly in molten glaze frits for a smooth finish.
- Predictable Reactivity: Consistent behavior in both oxidation and reduction firing.
Q: Will this red oxide turn black in my kiln?
A: In an oxidizing atmosphere, it stays red. In a heavy reduction atmosphere, it can transition to Magnetite (Fe3O4), producing black or celadon tones.
Q: Is it suitable for underglaze painting?
A: Yes, its micronized particle size allows for smooth brushability and sharp detail.
Ceramic Specialty Services
We offer "Glaze Compatibility Audits," testing our red oxide in your specific frit formula to ensure zero surface defects.
Custom Micronization: We can provide "Nano-Red" oxides for ultra-fine screen printing on porcelain surfaces.
The Science of Ferric Dissolution
In ceramic glazes, Red Iron Oxide acts through "Molecular Dispersion." During the melting phase, the Fe2O3 particles are attacked by the glaze flux (like Lead or Boron). The science lies in the "Saturation Limit"—if the iron is fully dissolved, you get a transparent colored glaze; if it remains suspended as tiny crystals, you get an opaque, crystalline red. Our ceramic grade is engineered with a specific surface area to control this dissolution rate, ensuring a consistent texture and hue.
About Demei
Demei Chemical Co., Ltd. specializes in the research, development, and production of inorganic iron oxide pigments. With over a decade of experience in the field, we have established ourselves as a leading manufacturer with advanced production facilities and a dedicated R&D team.
We are China Custom Red Iron Oxide for Ceramic Coloring Manufacturers and Wholesale Red Iron Oxide for Ceramic Coloring Suppliers, Factory. Our comprehensive pigment range includes iron oxide red, yellow, black, brown, green, orange, and blue. We produce high-performance and high-stability composite iron oxide pigments with three specialized series: Standard, Micronized, and Low Heavy Metal Content levels.
Our products are exported to more than 30 countries and regions worldwide, serving diverse industries including construction, coatings, plastics, rubber, ceramics, and paper. We pride ourselves on consistent quality, excellent color properties, and reliable technical support for our global clients.
R&D Excellence
Continuous investment in research and development ensures technological leadership. Our R&D center focuses on innovative pigment formulations and application technologies.
Advanced Manufacturing
State-of-the-art production facilities with automated control systems ensure consistent quality and large-scale production capacity of over 50,000 tons annually.
Quality Assurance
Strict quality control at every production stage. Certified to ISO 9001:2015, our pigments meet international standards for color consistency and performance.
Global Reach
Extensive distribution network across Asia, Europe, Americas, and Africa. We provide customized solutions and technical support for diverse market requirements.
Core Products
We provide a full range of high-quality inorganic iron oxide pigments, widely used in building materials, coatings, plastics, rubber, ceramics and other industries.
Product Series
We offer three specialized series of iron oxide pigments to meet diverse industry requirements and application scenarios
Standard Series
Conventional particle size iron oxide pigments suitable for most industrial applications. Excellent dispersibility and tinting strength with high cost-performance ratio.
Micronized Series
Ultra-fine particle size with uniform distribution. Ideal for high-end coatings, plastics, and applications requiring superior fineness and smooth finish.
Low Heavy Metal Series
Strictly controlled heavy metal content meeting international environmental standards. Suitable for toys, food packaging, and safety-sensitive applications.
Social Responsibility
Demei not only contributes to production and operation, but also faithfully fulfills its social responsibilities, protects the ecological environment, strengthens safe production, and cares for the health of employees.
Environmental Protection
Implementing green production processes, reducing waste emissions, and actively promoting circular economy principles.
Safe Production
Comprehensive safety management system ensuring controlled and secure operations throughout the production process.
Employee Health
Providing healthy working environments, regular health check-ups, and focusing on physical and mental well-being of our employees.
Community Contribution
Active participation in community development, supporting educational initiatives, and giving back to society.
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Phone
86-572-8035379
86-13666526593 -
Hours
Monday-Friday: 9am to 6pm
Saturday, Sunday: Closed -
Address
20th Floor, Mibei Chuanggongchang No. 650 Yunxiu South Road, Deqing County, Huzhou City, Zhejiang Province, China(Sales Office)
