Industry knowledge

Iron Oxide Powder Manufacturer with a Full Color Range

Deqing Demi Pigment Technology Co., Ltd. (Demei) is a professional manufacturer of synthetic inorganic iron oxide pigments. Our product line covers iron oxide red, yellow, black, brown, orange, green, and blue, supplied in three controlled series: standard, micronized, and low heavy metal content. We serve coatings, construction, plastics, ceramics, and other demanding industries from our production base in Zhejiang, China.

As a Iron Oxide Powder Manufacturers, we combine chemical synthesis with precise milling and surface treatment to deliver consistent color strength, dispersion, and weatherfastness. Our trade company, Deqing Hele New Material Technology Co., Ltd., manages export logistics and documentation for global projects.

Product Range and Application Fit

Each color family is engineered for specific binder systems and end-use conditions. The table below summarizes our available pigment types and their primary applications.

For detailed specifications, visit our Iron Oxide Red, Iron Oxide Yellow, and Custom Black Oxide Powder Manufacturers pages.

Three Series for Different Compliance and Performance Needs

We supply the same color family in three product series, allowing you to match the pigment grade to your regulatory and processing environment.

• Standard series – General-purpose grades for construction materials, industrial coatings, and rubber. Optimized for cost-effective coloring with reliable batch-to-batch consistency.
• Micronized series – Ultra-fine particle size distribution for faster dispersion, higher gloss, and improved color development in high-end paints and inks. Suitable for automated dosing systems.
• Low heavy metal series – Controlled levels of lead, arsenic, cadmium, and mercury, meeting strict international safety standards for food-contact, cosmetics, and children's products.

Engineering Value and Quality Control

Our pigments are produced through controlled precipitation and calcination, ensuring high chemical purity and uniform crystal structure. We monitor key parameters such as Fe₂O₃ content, oil absorption, residue on 325 mesh, water-soluble salts, moisture, pH, and tinting strength. For example, our iron oxide red grades maintain Fe₂O₃ content above 95%, with tinting strength between 95% and 105% of standard.

As a factory, we implement standardized production protocols to minimize lot-to-lot variation. Each batch is tested before release, and certificates of analysis are available for every shipment. Our quality system aligns with ISO 9001:2025, and products are designed to meet REACH and other applicable regulations.

Configuration and Customization

We offer several configuration options to fit your formulation and handling requirements:

• Particle size – Choose from standard, fine, or micronized grades to control dispersion speed and final surface finish.
• Surface treatment – Hydrophilic or hydrophobic treatments improve compatibility with water-borne or solvent-borne systems.
• Composite pigments – Pre-blended colors for specific shades (e.g., brown, green, orange) reduce weighing errors and ensure uniformity in concrete or coatings.
• Packaging – Available in 25 kg paper bags with plastic lining, water-soluble bags, low-melting PE bags, or 500–1250 kg jumbo bags.

Automation Integration and Process Support

For manufacturers using automated batching systems, we provide technical data on bulk density, flowability, and dispersibility to support accurate dosing. Our micronized series is designed to disperse quickly in high-speed mixers, reducing cycle times. We can also supply pre-dispersed pigment pastes for liquid colorant systems upon request.

During installation or trial runs, our technical team assists with dosage optimization, dispersion parameters, and troubleshooting. We recommend conducting a small-scale test with your actual binder before full production.

Maintenance, Storage, and Serviceability

Iron oxide pigments are chemically stable, but proper storage is essential to maintain performance. Store in a dry, ventilated area with relative humidity below 60%. Keep bags sealed until use to prevent moisture absorption and agglomeration. Under these conditions, our pigments have a practical shelf life of five to ten years.

We provide handling guidelines and safety data sheets with every order. For ongoing supply, our trade company coordinates logistics and documentation, ensuring timely delivery to your port or warehouse.

Information We Use to Configure Your Solution

To prepare a precise quotation and product recommendation, we need the following project details:

Frequently Asked Questions

What is the difference between standard, micronized, and low heavy metal series?
Standard series offers reliable performance for general industrial use. Micronized series has finer particles for faster dispersion and higher gloss. Low heavy metal series meets strict safety limits for food-contact, cosmetics, and toys.

Can you provide custom composite colors?
Yes, we produce composite iron oxide pigments for specific shades like brown, green, and orange. Our lab can match your reference color with a Delta E of less than 1.0, ensuring batch-to-batch consistency.

What is the typical shelf life of your iron oxide powder?
In sealed, dry storage, our pigments remain usable for five to ten years. The chemical structure is stable, but moisture can cause agglomeration, so keep bags closed.

Do you provide certificates of analysis?
Yes, each shipment includes a COA with detailed parameters such as Fe₂O₃ content, tinting strength, moisture, and heavy metal levels. We can also provide REACH and other compliance documents upon request.

Can you supply small trial samples before bulk order?
We offer sample packs for testing. Please provide your application details and target shade so we can recommend the most suitable grade.