Iron Oxide Brown
Products
Iron Oxide Brown
Short Description:
Used for coloring paints, inks, plastics, shoe powder and other products.
| Iron Oxide Brown | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Type | Fe2O3 (%) |
Oil Absorption (g/100g) |
Res. on 325 mesh (%) |
Water Sol. salts (%) |
Moisture (%) |
PH value | Density (g/cm) |
Particle Shape | Compared with std | Tinting Strength (%) |
| 610 | ≥88 | 25-35 | ≤0.3 | ≤0.5 | ≤1.0 | 4-7 | 0.7-1.1 | Irregular | ≤1 | 95-105 |
| 640 | ≥88 | 15-25 | ≤0.5 | ≤0.5 | ≤1.0 | 4-7 | 0.8-1.2 | Irregular | ≤1 | 95-105 |
| 686 | ≥88 | 15-25 | ≤0.5 | ≤0.5 | ≤1.0 | 4-7 | 0.8-1.2 | Irregular | ≤1 | 95-105 |
Brown Oxide Powder
Inorganic Pigment | Fe₂O₃ / Fe₃O₄ Composition
Product Overview
Brown Oxide Powder is an inorganic pigment composed primarily of iron oxide phases (Fe₂O₃ and Fe₃O₄), offering a color range from light tan to deep reddish-brown. As a core product in the Iron Oxide Brown series, it is produced through controlled precipitation or calcination processes to achieve uniform particle size distribution and consistent color strength.
Brown Iron Oxide Powder is characterized by strong tinting strength, low oil absorption, and broad compatibility with both water-based and solvent-based systems. Its stable crystalline structure ensures long-term color retention under UV exposure and alkaline conditions, making it a widely used colorant in construction materials, industrial coatings, ceramics, and rubber and plastic applications.
Brown Iron Oxide Pigment complies with international pigment standards including ISO 10601 and DIN 55913, and meets environmental requirements under REACH and RoHS regulations. It contains no heavy metals such as lead, mercury, or cadmium, making it suitable for applications with strict regulatory requirements.
Key Advantages
Excellent Lightfastness
Iron Oxide Brown maintains stable hue under prolonged UV and outdoor exposure, rated 7–8 on the ISO 105-B02 scale.
High Alkali Resistance
Brown Oxide Pigment does not react with cement, lime, or other alkaline substrates, ensuring color consistency in cementitious systems.
Consistent Batch Quality
Tinting strength and color difference (ΔE) are controlled within industry standards, supporting large-scale production with uniform color output.
Broad Compatibility
Brown Iron Oxide Powder disperses well in water-based, solvent-based, and dry powder formulations, compatible with a wide range of binders and resins.
Regulatory Compliance
Free from heavy metals; conforms to REACH, RoHS, and food-contact material standards (subject to specific product grade specifications).
Technical Specifications
Typical technical data for Brown Oxide Powder / Iron Oxide Brown 686. Values may vary by product grade; consult technical datasheet for specifications.
Application Areas
Construction Materials
Brown Iron Oxide Powder is extensively applied in coloring concrete pavers, precast blocks, artificial stone, grout, and roof tiles. Its resistance to cement alkali ensures stable hue over the service life of the structure. Iron Oxide Brown 686 is particularly suited for warm-toned antique brick and decorative concrete products.
Paints and Color Pastes
Iron Oxide Brown is formulated into water-based color pastes, industrial solvent coatings, and powder coatings. It is used as a brown tone in metal anti-corrosion primers and exterior architectural coatings, where durability and UV resistance are critical performance requirements.
Ceramics and Glazes
Brown Oxide Pigment is used as a ceramic body colorant and glaze pigment. It maintains stable color development during high-temperature firing and is commonly used for antique-finish tile glazes and stoneware coloring.
Rubber and Plastics
Brown Oxide Powder disperses uniformly in PVC, PE, and rubber compounds. It meets the color consistency demands of rubber flooring, profiles, and molded parts, and may comply with food-contact material standards depending on the product specification.
Outdoor Surfaces
Brown Iron Oxide Pigment is applied in colored EPDM rubber granules and synthetic turf infill materials. Its weathering resistance and pressure-stable coloration make it suitable for playgrounds, running tracks, and landscape surfaces.
Frequently Asked Questions
Q1: What causes color variation when using Brown Iron Oxide Pigment in concrete?
Color inconsistency in concrete typically results from fluctuations in dosage or uneven dispersion during mixing. It is recommended to pre-blend the pigment with fine aggregates before introducing water, and to cross-check each batch against a standard color tile. Maintaining a consistent water-cement ratio also reduces color deviation between pours.
Q2: How can flocculation of Brown Oxide Pigment in water-based coatings be addressed?
Flocculation often occurs when dispersion conditions are not optimized. Adding a suitable dispersant (e.g., polyacrylate-based), grinding the slurry to a fineness of ≤10μm, and adjusting the system pH to 7–9 can improve dispersion stability. Using a high-speed disperser during pre-dispersion is also effective.
Q3: How does Iron Oxide Brown 686 differ from other brown iron oxide grades?
Iron Oxide Brown 686 has a warm reddish-brown hue, well-suited to antique brick, terracotta, and warm-tone color systems. Other grades such as 663 lean toward yellow-brown, making them more appropriate for wood-tone imitation or earthy ochre palettes. Grade selection should be based on the target color standard and substrate characteristics.
Q4: What are the storage requirements for Brown Iron Oxide Powder?
Brown Oxide Powder should be stored in a dry, well-ventilated warehouse away from direct sunlight and moisture. Avoid co-storage with acids or strongly oxidizing substances. Once packaging is opened, reseal promptly to prevent moisture absorption and caking, which can impair dispersibility in formulations.
Q5: Is Brown Oxide Pigment safe for use in food-contact applications?
Certain grades of Brown Iron Oxide Pigment comply with food-contact material regulations, including FDA 21 CFR and EU Regulation (EC) No 10/2011. Compliance depends on the specific product grade and application method. Please refer to the relevant safety data sheet and technical documentation before use in regulated applications.
Handling and Safety Notes
Use appropriate respiratory protection (P2/P3 dust mask) when handling Brown Iron Oxide Powder in open environments to avoid inhalation of fine particulates.
Although Iron Oxide Brown is non-toxic under normal handling conditions, prolonged skin contact should be avoided; wash thoroughly after handling.
The product is not classified as a hazardous substance under GHS/CLP regulations; however, SDS documents should be reviewed before use in regulated industries.
Dispose of waste powder and packaging in accordance with local environmental regulations. Brown Oxide Pigment is not classified as hazardous waste under standard conditions, but verification against local rules is advised.
Iron Oxide Red Color Chart
Full Shade & Reduction (1:10)
Amaco Ltd Chemical & Pigment Distributer In Saudia
AMA Co. Ltd. focuses on the distribution and supply of high-quality inorganic iron oxide pigments in Saudi Arabia. We are a trusted distributor of iron oxide powder, supplying reliable pigment solutions for various industrial applications. Our pigments cover iron oxide red, yellow, black, brown, green, orange, blue, etc.
AMA Co. Ltd. works closely with established manufacturers to provide high-performance and high-stability composite iron oxide pigments in three series: standard, micronized, and low heavy metal content levels.
we are not only focuses on reliable product supply and customer service, but also is committed to maintaining product quality, supporting safe operations, protecting the environment, and building long-term relationships with our customers.
We are committed to providing dependable iron oxide pigment solutions and professional distribution services to customers across Saudi Arabia.
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.
| Pigment Type | Chemical Form | Typical Applications | Key Grades |
|---|---|---|---|
| Iron Oxide Red | Fe₂O₃ | Concrete, coatings, plastics, ceramics | 110, 130, 190, 180 |
| Iron Oxide Yellow | FeO(OH) | Cement products, paints, rubber | 313, 920, 810 |
| Iron Oxide Black | Fe₃O₄ | Concrete, anticorrosion coatings, plastics, food-contact | 318, 330, 722, 740 |
| Iron Oxide Brown | Composite oxides | Architectural concrete, floor coatings | 610, 686 |
| Iron Oxide Orange | Fe₂O₃ | Cement tiles, paints, plastics | 960 |
| Iron Oxide Green | Composite | Camouflage coatings, concrete coloring | 5607, 835 |
| Iron Oxide Blue | Composite | Coatings, plastics, artistic concrete | 2040, 5605 |
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:
| Project Parameter | Why It Matters |
|---|---|
| Application (e.g., concrete, paint, plastic) | Determines required alkali resistance, heat stability, and dispersion method. |
| Target color and shade reference | Helps select the correct pigment type and composite blend. |
| Binder system (water-based, solvent-based, cement) | Influences surface treatment and dispersibility requirements. |
| Regulatory compliance (e.g., E172, FDA) | Specifies the low heavy metal series or food-grade certification needed. |
| Production volume and batch size | Affects packaging choice and supply chain planning. |
| Processing equipment (mixer type, temperature) | Allows us to recommend micronized grades for faster dispersion or standard grades for high loading. |
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.
Amacoltd
Professional Chemical & Pigment Distributor
Products
Iron Oxide Brown
Iron Oxide Orange
Iron Oxide Blue
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