Iron Oxide Black

What is Iron Oxide Black?

Iron Oxide Black is an inorganic black pigment based on Fe₃O₄, widely used for industrial coloration in construction materials, coatings, plastics, rubber, fiber cement, paper, mortar, WPC, paving tiles, roof tiles, and ceramic products.

Fineland Chem offers DuraPaint®330 and DuraPaint®2330 as standard Iron Oxide Black grades. Both products are identified as Iron Oxide Black (C.I. 77499) and use Fe₃O₄ as their chemical formula. Both grades have a specified particle size of 0.2 μm, heat resistance of 60–80°C, light resistance of 8, weather resistance of 5, and migration resistance of 5.

Iron Oxide Black is commonly selected when manufacturers need a stable black inorganic pigment for mineral-based products, coatings, plastics, rubber polymers, and other industrial formulations.

For general information about magnetite and iron oxide materials, see Magnetite on Wikipedia and Iron oxide on Wikipedia.

Product Technical Data

Iron Oxide Black DuraPaint®330      ⬇️TDS
Recommended for Building materials, concrete, bricks, paints & coatings, fertilizers, plastics and rubber polymers, fiber cement, paper, mortar, wood plastic composites, paving tiles, industrial coatings, roof tiles, ceramic products.

Iron Oxide Black DuraPaint®2330      ⬇️TDS
Recommended for Building materials, concrete, bricks, paints & coatings, fertilizers, plasticsandrubber polymers, fiber cement, paper, mortar, wood plastic composites, paving tiles, industrial coatings, roof tiles, ceramic products.

Typical Applications

Iron Oxide Black is suitable for a broad range of industrial applications requiring stable black coloration.

1. Building Materials and Concrete

Iron Oxide Black can be used in concrete, bricks, mortar, paving tiles, roof tiles, and other construction materials requiring black or dark coloration.

Its light resistance of 8 and weather resistance of 5 make these properties relevant when evaluating the pigment for outdoor construction products.

2. Paints and Coatings

Iron Oxide Black can be used in decorative paints, architectural coatings, and industrial coatings requiring black coloration.

The pigment’s chemical and fastness properties allow it to be evaluated in different coating systems according to the required durability and formulation conditions.

3. Plastics and Rubber

Iron Oxide Black is suitable for evaluation in plastics and rubber polymers requiring black coloration and migration resistance.

However, the specified heat resistance of 60–80°C should be considered when selecting the pigment for plastic-processing applications.

4. Fiber Cement and Mortar

The pigment can be used in fiber cement, mortar, and other mineral-based products requiring black coloration.

5. Wood Plastic Composites

Iron Oxide Black can be considered for WPC products requiring black or dark coloration.

The weather resistance rating of 5 is relevant to applications exposed to outdoor conditions.

6. Paper and Ceramic Products

The TDS also lists paper and ceramic products among the recommended applications, allowing Iron Oxide Black to be evaluated across different industrial material systems.

Key Performance Properties Related to Applications

1. Stable Black Coloration

Iron Oxide Black provides a stable inorganic black pigment for industrial materials including concrete, coatings, plastics, rubber, fiber cement, and ceramics.

The product is classified as Iron Oxide Black (C.I. 77499) and uses Fe₃O₄ as its chemical formula.

2. Fine Particle Size of 0.2 μm

Both DuraPaint®330 and DuraPaint®2330 have a specified particle size of 0.2 μm.

This fine particle size can be considered when evaluating pigment dispersion, color development, and surface appearance in the target formulation.

3. Excellent Lightfastness

Both grades have a light resistance rating of 8 in full shade and reduced tinting conditions.

This supports applications where black coloration needs to maintain stability under prolonged light exposure.

4. Excellent Weather Resistance

Both grades have a weather resistance rating of 5.

This is particularly relevant to concrete products, paving materials, roof tiles, WPC, exterior coatings, and other outdoor applications.

5. High Migration Resistance

Both grades have a migration resistance rating of 5.

This makes them suitable for consideration in plastics and rubber applications where pigment migration or bleeding needs to be controlled.

Actual migration performance should be verified in the target polymer formulation.

6. Good Chemical Resistance

Both grades have acid and alkali resistance ratings of 4, together with resistance ratings of 4 against ethyl acetate, ethanol, and MEK.

These properties allow the products to be evaluated across mineral, coating, plastic, rubber, and other industrial formulation systems.

Typical Limitations

1. Limited Heat Resistance

DuraPaint®330 and DuraPaint®2330 have a specified heat resistance of 60–80°C.

Therefore, these grades should not be selected solely for applications requiring prolonged exposure to high processing temperatures. Customers working with high-temperature plastics should evaluate a heat-resistant Iron Oxide Black grade instead.

2. Fine Particle Size Requires Appropriate Dispersion

The specified particle size of 0.2 μm should be considered together with the dispersion equipment, processing method, pigment loading, binder or polymer system, and additives.

A fine particle size does not automatically guarantee optimum dispersion in every formulation.

3. Final Black Shade Depends on the Formulation

The final black appearance can vary according to pigment concentration, binder or polymer system, dispersion quality, and other pigments or additives.

For accurate color matching, buyers should provide a physical color sample or target color standard.

4. Grade Selection May Depend on Moisture Requirements

The two grades have different moisture specifications.

DuraPaint®330 has moisture ≤1.5%, while DuraPaint®2330 has moisture ≤2.0%. Buyers with strict moisture requirements should specify the preferred grade when requesting a quotation or sample.

Buyer Guidance

When sourcing Iron Oxide Black, buyers should confirm the following factors.

1. End-Use Application

Specify whether the pigment will be used in concrete, coatings, plastics, rubber, fiber cement, paper, mortar, WPC, ceramics, or another industrial application.

2. Processing Temperature

For plastics and rubber, provide the actual processing temperature and residence time.

The standard grades have a specified heat resistance of 60–80°C. If the application involves higher processing temperatures, a heat-resistant grade should be evaluated instead.

3. Required Black Shade

Clearly specify the desired black shade, undertone, and color strength requirements.

A physical color sample or target color standard is recommended for accurate shade matching.

4. Select the Appropriate Grade

DuraPaint®330 specifies Fe₂O₃ ≥90% and moisture ≤1.5%.

DuraPaint®2330 does not specify Fe₂O₃ content in the current TDS and has moisture ≤2.0%.

If moisture or chemical-content specifications are important to the application, buyers should clearly specify the required grade.

5. Dispersion Requirements

For coatings, plastics, rubber, and other formulated systems, buyers should provide information about the dispersion method, equipment, pigment loading, and binder or polymer system.

6. Outdoor Exposure

For exterior applications, confirm the expected sunlight and weather exposure.

Both grades have light resistance of 8 and weather resistance of 5, supporting their evaluation for outdoor construction materials and coatings.

7. Documentation and Compliance

For international B2B projects, buyers should confirm the required TDS, SDS, CoA, product specifications, and applicable regulatory documentation before commercial purchasing. Product selection should also consider the required color, particle size, processing temperature, application conditions, and expected durability.

For a broader comparison of standard iron oxide pigments, explore the conventional color range, including Iron Oxide Yellow, Iron Oxide Red, Iron Oxide Orange, Iron Oxide Blue, Iron Oxide Green, Iron Oxide Brown, and Iron Oxide Black.

For applications requiring finer particle sizes, buyers can also compare Micronized Iron Oxide Yellow, Micronized Iron Oxide Red, and Micronized Iron Oxide Black.

For higher-temperature processing requirements, see Heat Resistance Iron Oxide Yellow and Heat Resistance Iron Oxide Black.

Package and Delivery

Package: 25KG Kraft Bag, 1250kg Carton Box

Lead Time: Normally around 15 days after signed contract.

Manufacturer and Supplier Information

Fineland Chem is a B2B manufacturer and exporter of industrial pigments, supplying Iron Oxide Black / DuraPaint®330 / DuraPaint®2330 for building materials, concrete, coatings, plastics, rubber polymers, fiber cement, paper, mortar, WPC, paving tiles, roof tiles, ceramic products, and other industrial applications.

Both grades are based on Fe₃O₄ and are classified as Iron Oxide Black (C.I. 77499). They have a specified particle size of 0.2 μm, light resistance of 8, weather resistance of 5, and migration resistance of 5.

DuraPaint®330 specifies Fe₂O₃ ≥90% and moisture ≤1.5%, while DuraPaint®2330 has moisture ≤2.0% and does not provide an Fe₂O₃ content value in the current TDS.

Fineland Chem supports international B2B customers with product documentation, technical communication, sample evaluation, and application-oriented pigment supply.

For customers selecting between standard, micronized, and heat-resistant grades, the appropriate product should be determined according to processing temperature, particle size, moisture requirements, application environment, and final formulation performance.

FAQ

1. What is Iron Oxide Black?

Iron Oxide Black is an inorganic black pigment based on Fe₃O₄, used for industrial coloration in construction materials, coatings, plastics, rubber, fiber cement, WPC, ceramics, and other applications.

2. What grades of Iron Oxide Black are available?

Fineland Chem offers DuraPaint®330 and DuraPaint®2330 as standard Iron Oxide Black grades.

3. What is the chemical composition?

Both grades use Fe₃O₄ as their chemical formula.

4. What is the Color Index?

Both products are classified as Iron Oxide Black (C.I. 77499).

5. What is the particle size?

Both DuraPaint®330 and DuraPaint®2330 have a specified particle size of 0.2 μm.

6. What is the heat resistance?

Both standard grades have a specified heat resistance of 60–80°C.

7. What is the difference between DuraPaint®330 and DuraPaint®2330?

The main documented difference is moisture specification and the available Fe₂O₃ information. DuraPaint®330 specifies Fe₂O₃ ≥90% and moisture ≤1.5%, while DuraPaint®2330 specifies moisture ≤2.0% and does not provide an Fe₂O₃ content value in the current TDS.

8. Is Iron Oxide Black suitable for plastics?

Yes. Plastics and rubber polymers are listed among the recommended applications. However, the specified heat resistance of 60–80°C should be considered when evaluating plastic-processing applications.

9. Is Iron Oxide Black suitable for outdoor applications?

Yes. Both grades have a light resistance rating of 8 and weather resistance rating of 5, supporting their evaluation for outdoor construction materials, coatings, WPC, paving tiles, and roof tiles.

10. What are the main applications of Iron Oxide Black?

The TDS recommends the products for building materials, concrete, bricks, paints and coatings, fertilizers, plastics, rubber polymers, fiber cement, paper, mortar, WPC, paving tiles, industrial coatings, roof tiles, and ceramic products.

11. What should buyers confirm when sourcing Iron Oxide Black?

Buyers should confirm the end-use application, processing temperature, required black shade, moisture requirements, dispersion conditions, outdoor exposure, and required technical or compliance documentation.