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Iron Oxide Brown

  • Iron Oxide Brown
  • Iron Oxide Brown
  • Iron Oxide Brown
Short Description:

Used for coloring paints, inks, plastics, shoe powder and other products.

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Product Parameters
Iron Oxide Brown

Type

Fe2O3

Oil Absorption

  Res. on
325 mesh

Water
Sol. salts

Moisture

PH value

Density 

Particle Shape

Compared with std

Tinting Strength
（%） (g/100g） （%） （%） （%） （g/cm） （%）
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
IRON OXIDE BROWN

Brown Oxide Powder

Inorganic Pigment | Fe₂O₃ / Fe₃O₄ Composition
ISO 10601 DIN 55913 REACH Compliant RoHS
01

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.

686 Product Grade
7-8 Lightfastness
≤1.0% Moisture
20-35 Oil Absorption
02

Key Advantages

LF
Excellent Lightfastness
Iron Oxide Brown maintains stable hue under prolonged UV and outdoor exposure, rated 7–8 on the ISO 105-B02 scale.
AR
High Alkali Resistance
Brown Oxide Pigment does not react with cement, lime, or other alkaline substrates, ensuring color consistency in cementitious systems.
QC
Consistent Batch Quality
Tinting strength and color difference (ΔE) are controlled within industry standards, supporting large-scale production with uniform color output.
BC
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.
RC
Regulatory Compliance
Free from heavy metals; conforms to REACH, RoHS, and food-contact material standards (subject to specific product grade specifications).
03

Technical Specifications

Typical technical data for Brown Oxide Powder / Iron Oxide Brown 686. Values may vary by product grade; consult technical datasheet for specifications.
Product Grade Iron Oxide Brown 686
Main Composition Fe₂O₃ / Fe₃O₄
Color Range Light Tan to Deep Reddish-Brown
Oil Absorption 20–35 g/100g
Moisture Content ≤ 1.0%
Sieve Residue (45μm) ≤ 0.3%
pH (10% suspension) 6.0–8.0
Lightfastness (ISO 105-B02) Grade 7–8
Alkali Resistance (ISO 787-5) Grade 5
04

Application Areas

CM
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.
PC
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.
CG
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.
RP
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.
OS
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.
05

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.
06

Handling and Safety Notes

H1 Use appropriate respiratory protection (P2/P3 dust mask) when handling Brown Iron Oxide Powder in open environments to avoid inhalation of fine particulates.
H2 Although Iron Oxide Brown is non-toxic under normal handling conditions, prolonged skin contact should be avoided; wash thoroughly after handling.
H3 The product is not classified as a hazardous substance under GHS/CLP regulations; however, SDS documents should be reviewed before use in regulated industries.
H4 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.
Warm Earth Tones · Industrial Durability · Global Standard
Deqing Demi Pigment Technology Co. , Ltd.

Product packaging

We use high-quality packaging materials and professional packaging, palletizing, and film wrapping equipment.

  • 25KG papre bag with plastic inner
  • 25KG ater-soiubie bag
  • 25KG Low melting PE bag
  • 500KG-1250KG jumbo bag
    Full Shade:

  • 101

  • 120

  • 180

  • 313

  • 330

  • 610

  • 960

  • 835

    Reduction (1:10):

  • 101

  • 120

  • 180

  • 313

  • 330

  • 610

  • 960

  • 835

    Full Shade:

  • 110

  • 130

  • 190

  • 810

  • 318

  • 686

  • 2040

  • 5605

    Reduction (1:10):

  • 110

  • 130

  • 190

  • 810

  • 318

  • 686

  • 2040

  • 5605

Deqing Demi Pigment Technology Co. , Ltd.

Demei focuses on the research, development, and production of inorganic iron oxide pigments. We are China Wholesale Brown Oxide Powder Manufacturers and Custom Brown Oxide Pigment Suppliers, Factory. Our pigments cover iron oxide red, yellow, black, brown, green, orange, blue, etc. Deqing Demi Pigment Technology Co. , Ltd. offer Iron Oxide Brown 686, Iron Oxide Brown 610 ect. We produce high-performance and high-stability composite iron oxide pigments with three series: standard, micronized, and low heavy metal content levels.

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.

Deqing Hele New Material Technology Co Ltd. is our trade company.

Latest Updates
Provide You With The Latest Enterprise And Industry News.

Iron Oxide Brown Industry knowledge

Advantages of Micronized Brown Iron Oxide Powder in Wood and Furniture Coatings

Enhanced Dispersion and Transparency Control

In the specialized field of wood stains and furniture finishes, the particle size of the pigment directly dictates the clarity of the wood grain and the smoothness of the coating. Brown iron oxide powder is typically a composite pigment, created by precisely blending red, yellow, and black oxides. Deqing Demi Pigment Technology Co., Ltd. offers a micronized series that undergoes intensive mechanical milling to achieve a significantly finer particle size distribution. Unlike standard grades, which may leave visible streaks or settle quickly, our micronized brown oxide integrates seamlessly into wood pores, providing a uniform, natural appearance that enhances the aesthetic value of the substrate.

Technical Performance and Coating Integrity

  • Superior Gloss Retention: Smaller particles reduce the surface roughness of the dried film. The micronized pigments from Deqing Demi Pigment Technology Co., Ltd. allow for higher gloss levels in furniture topcoats compared to standard grades.
  • Increased UV Protection: Finer particles provide a more continuous barrier against ultraviolet radiation. By utilizing our brown iron oxide powder, manufacturers can extend the lifespan of outdoor wood furniture by preventing the degradation of the underlying cellulose fibers.
  • Reduced Sedimentation: The micronization process reduces the mass of individual particles, slowing down the settling rate in liquid stains. This ensures that the color remains consistent from the top to the bottom of the container during application.

Technical Parameter Comparison

Technical Metric Standard Brown Iron Oxide Micronized Brown Iron Oxide
Average Particle Size (μm) 0.5 - 0.8 0.1 - 0.3
Hegman Gauge (Fineness) 40μm - 50μm 10μm - 20μm
Oil Absorption (g/100g) 25 - 35 18 - 25
Dispersion Time Standard Reduced by 30% - 50%
Transparency in Stains Opaque / Low clarity Semi-transparent / High clarity

Commitment to Sustainability: Deqing Demi Pigment Technology Co., Ltd.

Deqing Demi Pigment Technology Co., Ltd. focuses on the research, development, and production of inorganic pigments that meet the highest industrial standards. Our production covers a full range of colors, including red, yellow, black, brown, green, orange, and blue. As a high-performance manufacturer, Demei faithfully fulfills its social responsibilities by protecting the ecological environment and ensuring safe production. Our micronized series is not only technically superior but also aligns with our mission to care for the health of employees and provide sustainable solutions for the global furniture industry.

Frequently Asked Questions (FAQ)

Q1: How does the blending process at Deqing Demi Pigment Technology Co., Ltd. ensure color stability for brown oxides?

Deqing Demi Pigment Technology Co., Ltd. utilizes high-precision automated blending systems to combine primary oxides. Because brown is a composite, our R&D focus ensures that the red, yellow, and black components have compatible oil absorption and density levels. This prevents color separation during storage and application, providing a high-stability product for our global clients.

Q2: Can Deqing Demi Pigment Technology Co., Ltd. customize the heavy metal content in brown pigments?

Yes. Deqing Demi Pigment Technology Co., Ltd. produces three series, including a specialized "low heavy metal content" level. We prioritize protecting the ecological environment and fulfilling our social responsibilities, allowing us to supply pigments that meet strict toy-safe and environmentally sensitive furniture coating regulations.

Q3: Why is the micronized series from Deqing Demi Pigment Technology Co., Ltd. more cost-effective for coating manufacturers?

While the initial cost per kilogram may be higher, the micronized series from Deqing Demi Pigment Technology Co., Ltd. offers higher tinting strength and significantly shorter dispersion times. This reduces energy consumption during the manufacturing process and allows for lower pigment loading to achieve the desired color depth, resulting in a lower overall formulation cost for the end user.

Technical Advantages of Synthetic Brown Iron Oxide Pigment in Exterior Coatings

Chemical Purity and Structural Stability

In high-durability exterior coatings, the choice between synthetic and natural pigments is determined by chemical consistency and resistance to environmental degradation. Synthetic brown iron oxide pigment is produced through controlled chemical precipitation, ensuring a high concentration of Fe2O3 (Iron III Oxide) without the unpredictable mineral impurities found in natural umber, such as clay, silica, or manganese oxides. Deqing Demi Pigment Technology Co., Ltd. utilizes advanced manufacturing processes to ensure that our synthetic brown series offers superior lightfastness and weather resistance. Unlike natural umber, which may vary in chemical composition between batches, our synthetic pigments provide consistent performance in protecting architectural surfaces from UV radiation and acid rain.

Color Consistency and Tinting Strength

  • Predictable Blending: Because synthetic brown iron oxide pigment is a composite of high-purity red, yellow, and black oxides, it allows for precise color matching. Natural umber often contains organic matter that can cause "drifting" in color over time.
  • Superior Opacity: The refined particle structure produced by Deqing Demi Pigment Technology Co., Ltd. ensures higher hiding power. This means fewer coating layers are required to achieve full coverage, reducing material costs for large-scale exterior projects.
  • Chemical Inertness: Synthetic oxides are inherently more resistant to alkaline substrates (like fresh concrete or stucco), whereas the impurities in natural earth pigments can sometimes react, leading to localized discoloration or "blooming."

Technical Parameter Comparison: Synthetic vs. Natural

Technical Feature Natural Umber (Earth Pigment) Synthetic Brown Iron Oxide (Demei)
Iron Oxide Content (Fe2O3) 40% - 70% (Variable) 88% - 92% (Standardized)
Impurity Levels High (Silicates, Manganese, Organic matter) Trace (Minimal water-soluble salts)
Tinting Strength Moderate to Low High (Standardized to 95%-105%)
Particle Size Distribution Broad (Harder to disperse) Narrow (Excellent dispersion)
Weatherfastness (1-8 scale) 6 - 7 7 - 8 (Maximum stability)

Excellence in Production: Deqing Demi Pigment Technology Co., Ltd.

Deqing Demi Pigment Technology Co., Ltd. focuses on the comprehensive research, development, and production of inorganic pigments, including iron oxide red, yellow, black, brown, and more. Our high-performance composite iron oxide pigments are available in three specific series: standard, micronized, and low heavy metal content. By maintaining strict control over the production environment, Demei not only delivers high-stability products but also faithfully fulfills its social responsibilities. We prioritize protecting the ecological environment and care for the health of employees, ensuring that our safe production practices translate into high-quality solutions for the global coatings industry.

Frequently Asked Questions (FAQ)

Q1: How does Deqing Demi Pigment Technology Co., Ltd. ensure the UV stability of its brown pigments for exterior use?

At Deqing Demi Pigment Technology Co., Ltd., we optimize the particle morphology of our synthetic iron oxide brown to maximize UV absorption and scattering. Our high-stability composite pigments are tested under simulated weathering conditions to ensure they maintain their color integrity on exterior facades, providing a reliable solution that outperforms natural alternatives in long-term durability.

Q2: Why should manufacturers choose the low heavy metal series from Deqing Demi Pigment Technology Co., Ltd.?

Deqing Demi Pigment Technology Co., Ltd. produces a specialized series with low heavy metal content levels to help our clients meet rigorous international safety and environmental regulations. As a company that fulfills its social responsibilities and protects the ecological environment, we offer these high-purity pigments to ensure that exterior coatings are both high-performing and environmentally compliant.

Q3: What makes the micronized series from Deqing Demi Pigment Technology Co., Ltd. different from standard brown pigments?

The micronized series from Deqing Demi Pigment Technology Co., Ltd. is engineered for applications requiring rapid dispersion and high gloss. Through advanced milling, we reduce the particle size to a sub-micron level, which significantly lowers oil absorption and improves the flow properties of the coating. This allows for more efficient production cycles and superior finish quality compared to standard grade synthetic or natural pigments.