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Quick Answer Iron oxide powder is a finely ground inorganic pigment comp
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Iron Oxide Blue
Short Description:
Lacquers, inks, paints, pigments and crayons, coloring of lacquered fabrics, lacquered paper, coloring of plastic products, coloring of architectural floors, floor tiles, etc.
SYNTHETIC INORGANIC PIGMENT
Blue Iron Oxide Powder
Iron Oxide Blue · PB 27 Series · Industrial Grade
RoHS REACH FDA Compliant EN71-3
A
Core Advantages of Iron Oxide Blue Powder
CS
Chemical Stability
Iron Oxide Blue Powder resists degradation in alkaline and mildly acidic environments, maintaining color integrity in cement-based systems and weathered exterior surfaces. It does not bleed, migrate, or fade under prolonged UV exposure.
TR
Thermal Resistance
The pigment remains structurally stable at temperatures up to 300°C, supporting use in baked coatings, high-temperature plastics processing, and industrial baking enamel systems without discoloration or decomposition.
NT
Non-Toxic Formulation
Free from soluble heavy metals, Blue Iron Oxide Pigment meets FDA, EN71-3, and food-contact-adjacent regulatory requirements, expanding its use into consumer-facing products such as cosmetics, artist materials, and architectural finishes.
CT
Consistent Tinting Strength
Manufactured under ISO-certified production conditions, each batch of Iron Oxide Blue maintains uniform oil absorption, particle size distribution, and masstone, reducing formulation variability across production runs.
WC
Wide Compatibility
The pigment disperses efficiently in water-based, solvent-based, and UV-curable systems, as well as in thermoplastic and thermoset matrices without requiring surface treatment for standard applications.
S
Product Specifications
Chemical Name
Iron(II,III) Oxide / Synthetic Iron Oxide
CI Pigment Number
PB 27 (related grades vary)
Particle Size (D50)
0.1 – 1.0 μm (grade-dependent)
Oil Absorption
25 – 40 g/100g
Moisture Content
≤ 1.5%
pH Value (10% slurry)
6.0 – 8.0
Heat Resistance
Up to 300°C
Lightfastness (ISO 105-B02)
Grade 7–8
Solubility in Water
Practically insoluble
Packaging
25 kg paper bags / 500 kg / 1000 kg jumbo bags
Table 1 – Standard technical parameters for Blue Iron Oxide Powder (values may vary by grade)
F
Application Fields
Construction Materials
Blue Iron Oxide Pigment is widely used in concrete coloring, paving blocks, roof tiles, and fiber cement boards. Its alkali resistance ensures color durability in high-pH cementitious matrices without the fading associated with organic blue pigments. Typical dosage ranges from 1% to 5% by weight of cement.
Paints and Industrial Coatings
In architectural and industrial coating systems, Iron Oxide Blue Powder contributes to blue, slate, and gray tones. It is compatible with acrylic, alkyd, epoxy, and polyurethane binders, providing opacity and UV durability in both interior and exterior applications.
Plastics and Rubber
The pigment's thermal stability supports its use in injection molding, extrusion, and calendering of thermoplastics such as PVC, polyolefins, and ABS. In rubber compounding, it withstands the mechanical and thermal stresses of vulcanization without color shift.
Ceramics and Glazes
Blue Oxide Pigment is used in ceramic body coloring and underglaze applications where firing temperatures require inorganic colorants. Its stability at high kiln temperatures maintains color accuracy through the sintering process.
Cosmetics and Personal Care
Cosmetic-grade Iron Oxide Blue complies with EU Regulation (EC) No 1223/2009 and FDA 21 CFR Part 73, allowing use in eyeshadows, eyeliners, and other leave-on products. Particle fineness and low impurity levels are critical specifications for this application segment.
Artist and Craft Materials
In oil paints, watercolors, and artist-grade pigment preparations, Blue Iron Oxide Powder provides a muted, earth-tone blue with high permanence ratings, often used to mix neutral grays and complex chromatic blends.
C
Comparison: Blue Iron Oxide vs. Organic Blue Pigments
Property
Blue Iron Oxide Pigment
Organic Blue Pigment (e.g., Phthalocyanine)
Lightfastness
Grade 7–8
Grade 7–8 (varies by type)
Alkali Resistance
Excellent
Moderate
Heat Resistance
Up to 300°C
120–200°C (varies)
Color Saturation
Medium (earthy blue)
High (bright blue)
Heavy Metal Content
None (synthetic grade)
None
Cost per kg
Lower
Higher
Regulatory Compliance (Cosmetics)
Approved (cosmetic grade)
Limited approvals
Table 2 – Performance comparison between Blue Iron Oxide Pigment and typical organic blue pigments
Q
Frequently Asked Questions
What is the difference between Iron Oxide Blue and Prussian Blue?
Prussian Blue (Iron Blue, CI Pigment Blue 27) is a coordination compound (ferric ferrocyanide), while Iron Oxide Blue refers to synthetic iron oxide-based blue pigments. Prussian Blue delivers a brighter, more saturated blue tone but has limited alkali resistance and lower heat stability compared to iron oxide variants. Iron oxide-based blue pigments are preferred where cement compatibility, elevated temperature tolerance, or long-term weathering is a primary concern.
Is Blue Iron Oxide Powder safe for use in children's toys and art supplies?
Synthetic Blue Iron Oxide Powder produced to EN71-3 and ASTM D-4236 standards is considered safe for use in toys and art materials at regulated limits. Always request a current Safety Data Sheet (SDS) and compliance documentation from the supplier before finalizing formulations for consumer products.
How should Blue Iron Oxide Powder be dispersed in water-based systems?
Pre-wetting the pigment with a small amount of water or dispersant before milling improves dispersion efficiency. High-speed dispersers, bead mills, or three-roll mills are commonly used depending on the required fineness. For Blue Oxide Pigment in architectural coatings, a dispersant loading of 1–3% based on pigment weight is typical. Avoid prolonged exposure to highly alkaline slurries above pH 12 without testing, as this may affect shade stability in some grades.
What particle size grade is recommended for cosmetic applications?
Cosmetic-grade Iron Oxide Blue Powder typically requires a D50 below 0.3 μm and strict limits on heavy metal impurities (e.g., As ≤ 3 ppm, Pb ≤ 20 ppm per EU regulation). Micronized grades with surface treatment for skin feel are available from specialized suppliers. Confirm particle size, purity certificate, and regulatory compliance documentation before use.
Can Blue Iron Oxide Pigment be blended with other iron oxide colors?
Yes. Iron Oxide Blue Pigment is routinely blended with red, yellow, and black iron oxide pigments to produce a wide spectrum of earth tones, neutral grays, and composite greens. Compatibility testing is recommended when combining with organic pigments to identify potential flocculation or shade-shift issues.
H
Storage, Handling, and Safety Notes
Storage Conditions
- Store in a cool, dry environment away from direct moisture and strong oxidizing agents.
- Keep bags sealed when not in use to prevent moisture absorption and agglomeration.
- Recommended storage temperature: 5°C – 35°C; relative humidity below 70%.
- Shelf life: 24 months from date of manufacture in original, unopened packaging.
Handling Precautions
- Blue Iron Oxide Powder is classified as a nuisance dust; use appropriate respiratory protection (N95 or equivalent) during weighing and transfer operations.
- Avoid generating airborne dust in confined areas; use local exhaust ventilation where necessary.
- Wear gloves and eye protection when handling bulk quantities.
- The pigment is non-flammable and non-explosive under normal handling conditions.
Regulatory and Environmental Notes
- Iron Oxide Blue Powder is not classified as hazardous under GHS/CLP for standard synthetic grades.
- Complies with REACH (EC) No 1907/2006 — no SVHC substances above threshold limits in standard formulations.
- Dispose of residues and contaminated packaging in accordance with local industrial waste regulations.
- Not classified as an environmental hazard; however, release to waterways should be avoided during processing.
P
Packaging and Supply Options
Standard packaging for Blue Oxide Pigment includes 25 kg multi-wall paper bags, 500 kg intermediate bulk containers (IBC), and 1,000 kg jumbo bags for bulk industrial supply. Custom packaging configurations are available on request. All packaging materials comply with applicable transportation regulations for inorganic pigment powders.
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
101
120
180
313
330
610
960
835
Full Shade:
101
120
180
313
330
610
960
835
Reduction (1:10):
110
130
190
810
318
686
2040
5605
Full Shade:
110
130
190
810
318
686
2040
5605
Reduction (1:10):
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Iron Oxide Blue Industry knowledge
Alkali Resistance and Color Permanence of Blue Iron Oxide Pigment in Exterior Wall Panels
Chemical Engineering for High-pH Environments
Cementitious architectural components, such as exterior wall panels, maintain a high alkalinity (pH 12–13) due to the presence of calcium hydroxide. Standard pigments often suffer from "alkali attack," resulting in fading, chalking, or severe color shifts. Blue iron oxide pigment is a specialized composite pigment where inorganic iron oxide serves as a carrier for high-stability organic blue components. Deqing Demi Pigment Technology Co., Ltd. utilizes a unique encapsulation and surface-treatment process to shield the pigment particles from chemical reactions with the cement paste. This alkali resistance ensures that the blue hue remains vivid and structurally integrated within the cement matrix, preventing the degradation commonly seen with untreated dyes.
Key Factors in Color Stability
- Chemical Inertness: The high-performance composite blue series from Deqing Demi Pigment Technology Co., Ltd. is engineered to be non-reactive with the lime and alkalis present in concrete, maintaining its molecular structure throughout the hydration process.
- UV and Weatherfastness: In addition to alkali resistance, our blue iron oxide pigment provides an 8-grade lightfastness rating. This is essential for exterior wall panels that face simultaneous chemical stress from the substrate and physical stress from intense solar radiation.
- Uniform Particle Distribution: By utilizing our micronized series, the pigment achieves a finer dispersion. This prevents localized concentrations of alkali from affecting the color uniformity, ensuring a consistent aesthetic across large architectural surfaces.
Technical Parameter Comparison: Standard Blue vs. Composite Blue Oxide
| Technical Property | Standard Organic Blue | Composite Blue Iron Oxide (Demei) |
| Alkali Resistance (1-5 Scale) | 1 - 2 (Poor) | 4 - 5 (Excellent) |
| pH Tolerance | 4.0 - 9.0 | 3.0 - 13.0 |
| Lightfastness (1-8 Scale) | 5 - 6 | 7 - 8 |
| Tinting Strength (%) | Variable | 95% - 105% (Standardized) |
| Heat Stability | Low (<160°C) | Up to 200°C |
Commitment to Quality at Deqing Demi Pigment Technology Co., Ltd.
Deqing Demi Pigment Technology Co., Ltd. focuses on the research, development, and production of a full range of inorganic pigments, including iron oxide red, yellow, black, brown, green, orange, and blue. We specialize in high-performance and high-stability composite iron oxide pigments across three series: standard, micronized, and low heavy metal content levels. Beyond technical leadership, Demei faithfully fulfills its social responsibilities by protecting the ecological environment and strengthening safe production. Our commitment to caring for the health of employees ensures that our high-purity pigments are produced under the safest and most sustainable conditions for the global construction industry.
Frequently Asked Questions (FAQ)
Q1: Why is Deqing Demi Pigment Technology Co., Ltd. the preferred partner for colored cement panels?
Deqing Demi Pigment Technology Co., Ltd. focuses on providing high-stability composite pigments that are specifically formulated for the harsh conditions of the construction industry. Our R&D ensures that the blue iron oxide does not react with the alkaline cement, preventing premature fading and ensuring that exterior wall panels maintain their design intent for the duration of the building's lifespan.
Q2: Does Deqing Demi Pigment Technology Co., Ltd. offer low-heavy-metal options for blue pigments?
Yes. As part of our mission to protect the ecological environment and fulfill social responsibilities, Deqing Demi Pigment Technology Co., Ltd. provides a specialized series with low heavy metal content levels. These high-performance pigments allow our clients to meet strict environmental regulations while maintaining the vibrant color and alkali resistance required for modern architectural finishes.
Q3: What are the dispersion benefits of using micronized blue iron oxide from Demei?
The micronized series produced by Deqing Demi Pigment Technology Co., Ltd. features superior fineness and lower oil absorption. This allows for faster and more uniform dispersion in water-based coatings and dry-mix mortars. This high-stability series improves production efficiency and ensures a more consistent color finish in cementitious wall panels, while our focus on safe production minimizes dust handling for our customers' employees.
Technical Factors Influencing Oil Absorption of Blue Iron Oxide Powder in Epoxy Systems
Surface Area and Particle Morphology
In solvent-based epoxy floor systems, the oil absorption rate of blue iron oxide powder is a critical metric that dictates the amount of resin required to fully "wet" the pigment. This rate is primarily influenced by the total surface area and the porosity of the pigment particles. Deqing Demi Pigment Technology Co., Ltd. utilizes controlled precipitation and blending techniques to ensure that our blue composite pigments have a compact particle structure. A higher surface area or an irregular, porous morphology increases the void spaces that must be filled by the epoxy binder, leading to higher oil absorption. By optimizing the particle shape, we help formulators maintain low-viscosity systems even at higher pigment loadings.
Micronization and Aggregate Reduction
- Particle Fineness: The presence of large, loose aggregates significantly increases the oil absorption value. Deqing Demi Pigment Technology Co., Ltd. offers a micronized series where these clusters are broken down into primary particles. This leads to a more efficient packing density within the solvent-based epoxy matrix.
- Surface Treatment: Chemical modification of the blue iron oxide powder surface can lower its affinity for oil-based solvents. Our R&D team develops high-stability coatings that reduce the polar nature of the inorganic particles, thereby lowering the overall resin demand.
- Moisture and Volatiles: Residual moisture can cause localized clumping, which artificially inflates oil absorption readings. Our strict production standards ensure minimal volatile content, providing consistent performance in industrial flooring.
Technical Parameter Comparison: Standard vs. Micronized Blue Powder
| Technical Property | Standard Blue Iron Oxide | Micronized Blue Iron Oxide (Demei) |
| Oil Absorption (g/100g) | 25 - 35 | 18 - 25 |
| Average Particle Size (μm) | 0.5 - 0.9 | 0.1 - 0.3 |
| Hegman Fineness (Grind) | 40μm - 50μm | 10μm - 20μm |
| Tinting Strength (%) | 95% - 105% | 110% - 120% |
| Dispersion Stability | Moderate | High (Reduced Sedimentation) |
Commitment to Innovation: Deqing Demi Pigment Technology Co., Ltd.
Deqing Demi Pigment Technology Co., Ltd. focuses on the comprehensive research, development, and production of high-performance inorganic pigments, including iron oxide red, yellow, black, brown, green, orange, and blue. We offer three specialized series: standard, micronized, and low heavy metal content levels. Beyond technical precision, Demei faithfully fulfills its social responsibilities by protecting the ecological environment and strengthening safe production. We care for the health of employees by implementing dust-controlled manufacturing processes, ensuring that our high-stability pigments contribute to both a better finish and a safer workspace.
Frequently Asked Questions (FAQ)
Q1: How does Deqing Demi Pigment Technology Co., Ltd. support the cost-efficiency of epoxy floor formulations?
Deqing Demi Pigment Technology Co., Ltd. focuses on reducing the oil absorption of its pigments through advanced micronization. By providing blue iron oxide powder with a lower resin demand, we allow manufacturers to create high-solids epoxy systems that use less expensive binder while achieving excellent color depth and surface leveling.
Q2: Does Deqing Demi Pigment Technology Co., Ltd. provide low heavy metal pigments for indoor flooring?
Yes. Deqing Demi Pigment Technology Co., Ltd. produces a specific series with low heavy metal content levels to comply with indoor air quality and safety standards. We are dedicated to protecting the ecological environment and fulfilling our social responsibilities, ensuring our pigments are safe for use in residential and commercial epoxy floor applications.
Q3: What makes the blue pigments from Deqing Demi Pigment Technology Co., Ltd. highly stable in solvent-based systems?
Our high-stability composite iron oxide pigments are engineered to resist flocculation and color floating. Deqing Demi Pigment Technology Co., Ltd. utilizes specialized surface treatments that improve the compatibility between the inorganic pigment and solvent-borne resins, ensuring that the blue hue remains uniform across the entire floor surface while maintaining the health of employees through easier handling and processing.
