Brown Iron Oxide

What Is Brown Iron Oxide

Brown iron oxide is a pigment composed of red iron oxide and yellow iron oxide, a small amount of black iron oxide can be added if needed. Depending on the production process, the color phase can be yellow brown, red brown, black brown, etc… Because the dispersion is roughly the same, they can be mixed evenly. It has the characteristics of iron oxide red and yellow iron oxide pigment, such as the strong coloring and covering power, and the functions of heat resistance, alkali resistance, acid resistance. Of course, it also has the same applications as most iron oxide pigments.

Pairs Horses Chemical Product Page

• Technical Specifications
• Color Alta
• Production Process

Item Unit Index Value Test Method Contents(α-FeOOH) % ≥88 ISO Oil absorption ml/100g 25-35 ISO787-5 Res.on 325 mesh % ≤0.3 ISO787-7 Water soluble salts % ≤0.5 ISO787-3 Moisture % ≤1.5 ISO787-2 PH value 4-7 ISO787-9 Ignition loss(1,000℃，1/2h） % DIN Bulk density g/cm³ 0.5-0.8 ISO787-11 Specific gravity g/cm³ 4.7 ISO787-10 Particle size BET µm Irregular Eletron Micrographs Dispersibility(Hegman) µm ISO787-20 Tinting Strength(Compared with Standard) % 95-105 ISO787-24 Color Difference ΔE (Compared with Standard) ≤1.0 ISO787-1

　　　Item/Colour Alta

Primary Color

Dilute Color（TiO2: brown iron oxide=5:1）

 Iron Oxide Brown 610

 663 Iron Oxide Brown

 Iron Oxide Brown 686

How Is It Made

• Ferrous sulfate oxidation method. Ferrous sulfate reacted with soda ash, after washing, filtering, drying, crushing and mixing, the chemical is prepared.
• Mechanical mixing method. It is made of iron oxide red, yellow and black through mechanical mixing.
• An energy-saving and environment-friendly preparation method. First, add the mother liquor of iron oxide red and iron oxide yellow to the oxidation barrel, which can turn waste into treasure and improve resource utilization. Then add polymer composite alkali solid to water to prepare saturated solution. Third, pour air into the oxidation tank, add the prepared polymer composite alkali saturated solution. Make the PH value of the solution be 7.5 to 13, and perform oxidation reaction for 2 to 5 hours to obtain a mixture. Finally, the obtained mixture is filtered, rinsed, dried and crushed to obtain brown iron oxide pigment.
• A liquid phase low heavy metal iron oxide brown. Add the purified ferrous sulfate solution to the pressure reactor. Pour nitrogen into the reactor to drive out the remaining air in the reactor and then fill the remaining space of the reactor. Then close all valves of the reactor, heat the reactor and turn on the stirring at the same time. Third, use a pressure pump to inject lye with the same concentration. Turn on the stirring, continue to raise the temperature. When the temperature rises to 90℃- 120℃, heat preservation is performed. After the heat preservation is completed, use cold circulating water to quickly cool to room temperature, open the valve, rinse the brown slurry, press filter, dry and crush to get the finished product.

What Are Applications of Brown Iron Oxide

As a pigment, it is widely used for the coloring of paint, ink, shoe powder, building material, rubber, plastic and other products.
Know the raw material composition of the product from the production process of iron oxide brown, so as to determine the performance structure of the product and which industries it can be used. In order to ensure the safety of product operation, the storage and uses must be carried out in strict accordance with the specified operating requirements to avoid accidents and threats to operators.

What Are Advantages of Brown Iron Oxide in Chemate

• High coloring power and hiding power
• Excellent light resistance, weather resistance and high temperature resistance.
• Strong coloring force and good dispersivity.
• High purity, high saturation, high tinting power

• :
• : -371-
• : +86
• Wechat: +86
• ADD: NO.80 PUHUI ROAD,ZHENGZHOU CITY, HENAN PROVINCE, CHINA

Send Us A Message Now

Your Name Your Your Your Country Message

Synthetic iron oxides are widely used in the paint industry as pigments. These pigments come in various colors, including red, yellow, blue, brown, black, and green, making them incredibly versatile for different types of coatings. They are valued for their strong color, durability, and cost-effectiveness, making them a popular choice for manufacturers when formulating paints.

Additional reading:
Calcium Carbide Manufacturing Plant Report 2025: Costs & ROI

If you want to learn more, please visit our website Blue Iron Oxide.

One of the key reasons synthetic iron oxides are useful in paints is their vibrant and consistent color. These pigments provide a rich and even color that doesn’t fade easily over time. This makes them ideal for applications where maintaining the color is important, such as in architectural coatings, automotive paints, and industrial finishes. For example, the bright red of synthetic iron oxide is often used in outdoor paints for buildings, where the color needs to remain strong despite exposure to sunlight and weather.

Durability is another major benefit of using synthetic iron oxides in paints. These pigments are highly resistant to light, heat, and chemicals, meaning they don’t break down or degrade easily. This durability ensures that the paint retains its color and protective properties for a long time, even in harsh environments. For instance, paints that contain synthetic iron oxide pigments can withstand exposure to UV radiation, moisture, and pollution without losing their effectiveness or appearance.

The range of colors offered by synthetic iron oxides is also a significant advantage. Each color can be used to achieve different effects and finishes. Red and yellow iron oxides, for example, are often used in decorative paints for their bright, warm tones, while black iron oxide is commonly used in industrial coatings for its deep, dark color that provides excellent coverage and hiding power. Brown iron oxide is ideal for natural, earthy tones in wood finishes, and green and blue iron oxides are used in specialized applications where specific color shades are needed.

Synthetic iron oxides are also cost-effective, making them a practical choice for manufacturers. These pigments are relatively inexpensive compared to other colorants, yet they still provide excellent performance. This cost-effectiveness allows paint manufacturers to produce high-quality paints at a lower cost, making them affordable for consumers and businesses alike. Additionally, because synthetic iron oxides are produced in large quantities, their supply is stable and reliable, ensuring that they are readily available for use in paint formulations.

Another important aspect of synthetic iron oxides is their environmental safety. These pigments are non-toxic and do not pose significant health risks, making them safe for use in a wide range of applications, including residential and commercial buildings. This safety aspect is especially important as regulations and consumer preferences increasingly demand environmentally friendly and safe products. Paints containing synthetic iron oxides meet these requirements, offering a safe option without compromising on performance.

In terms of application, synthetic iron oxides are easy to work with. They disperse well in solvent-based paints, ensuring that the color is evenly distributed throughout the paint. This ease of use makes them suitable for various types of coatings, from smooth, glossy finishes to textured surfaces. The consistency and quality of synthetic iron oxides ensure that the final product meets the desired specifications, whether it’s a decorative wall paint or a protective industrial coating.

In summary, synthetic iron oxides are extremely useful in the paint industry due to their vibrant colors, durability, cost-effectiveness, environmental safety, and ease of use. These pigments allow manufacturers to create a wide range of high-quality paints that are suitable for various applications, from decorative to industrial.

Whether it’s the bright red of a building facade, the deep black of a machine coating, or the earthy tones of wood finishes, synthetic iron oxides provide the color, protection, and performance needed to meet the demands of modern paint formulations.