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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 Pigments for Cement Products
High-performance inorganic pigment with excellent color stability, weather resistance, and broad application range.
Global Leader in Cementitious Colorants
Deqing Demi Pigment Technology Co., Ltd. is a premier supplier of iron oxide reds for the global construction industry. Our pigments are the industry standard for durability and consistency. We understand that in large-scale infrastructure and residential projects, batch-to-batch color uniformity is critical. Our production process ensures that every bag of red pigment delivered meets the exact "chroma" and "hue" requirements of professional masons and precast manufacturers.
Cement Application Segments
- Concrete Paving Stones: Durable, UV-stable red for driveways and walkways.
- Roof Tiles: Weather-resistant coloring for clay and concrete tiles.
- Ready-Mix Concrete: Full-depth coloring for architectural structures.
- Mortar & Stucco: Vibrant red accents for brickwork and facades.
Cement Grade Technical Specs
| Property | Standard Value | Unit |
| Fe2O3 Content | Min 96.0 | % |
| Oil Absorption | 15 - 25 | g/100g |
| Residue on 325 Mesh | Max 0.3 | % |
| pH Value | 5.0 - 8.0 | ISO 787-9 |
| Water Soluble Matter | Max 0.3 | % |
Performance Features for Masonry
- Alkali Resistance: Fully stable in high-pH cement (pH>12).
- UV Permanence: Zero fading under direct, long-term solar exposure.
- Easy Dispersion: Wets out quickly in both dry-mix and wet-mix systems.
- Weatherproof: Resistant to freeze-thaw cycles and acid rain.
Q: Does the red pigment affect the strength of the concrete?
A: No, when used at recommended loading levels (3-7%), our pigments do not negatively impact the compressive strength of the concrete.
Q: Can this be used in white cement?
A: Yes, using Red Oxide in white cement produces much brighter, cleaner "pink" and "coral" tones than in grey cement.
Customized Construction Solutions
We provide precision blending services to create specific "Terracotta" or "Brick Red" shades requested by architects.
Technical Support: Our lab offers "Water Demand" testing to help clients adjust their concrete mix designs when incorporating high-loading pigment concentrations, ensuring optimal flow and finish.
The Science of Red Saturation
In cement products, color science centers on the "Tinting Strength." We use CIELab spectrophotometry to measure the a∗ value (redness). Because cement is a naturally grey substrate, we maximize the pigment's "Hiding Power" to ensure that even at low dosages, the grey is completely neutralized. We monitor the "Chroma" (C∗) to ensure the red remains vibrant and does not appear "muddy" after the concrete has fully cured and dried.
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 Pigments for Cement Products Manufacturers and Wholesale Red Pigments for Cement Products 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)
