Chemical Structure and Heat Stability of Iron Oxide Yellow 313
Molecular Composition and Thermal Resistance
Iron Oxide Yellow 313 is chemically characterized as Goethite (FeOOH). In plastic extrusion processes, the primary challenge is the dehydration of the pigment, where the chemically bound water in the hydroxide structure is released, causing a color shift toward red. The 313 grade is specifically engineered with a robust crystalline lattice that raises the threshold for this dehydration reaction. Deqing Demi Pigment Technology Co., Ltd. utilizes advanced calcination and surface treatment technologies to stabilize the needle-like particle morphology of our iron oxide yellow. This structural integrity allows the pigment to maintain its vibrant yellow hue even when subjected to the high temperatures and shear forces typical of thermoplastic processing.
Particle Morphology and Extrusion Performance
- Crystalline Stability: The acicular (needle-like) structure of Iron Oxide Yellow 313 provides better mechanical interlocking within the polymer matrix, which contributes to the overall structural strength of the extruded plastic.
- Advanced Surface Coating: Deqing Demi Pigment Technology Co., Ltd. applies specialized inorganic treatments to the 313 series, creating a thermal barrier that delays the conversion of FeOOH to Fe2O3.
- Low Volatile Content: By minimizing residual moisture and impurities, our pigments reduce the risk of bubbling or surface defects during the high-pressure extrusion phase.
Technical Parameter Comparison
| Technical Property |
Standard Iron Oxide Yellow |
Iron Oxide Yellow 313 (Heat Stable) |
| Chemical Structure |
FeOOH (Standard) |
FeOOH (Stabilized Lattice) |
| Heat Resistance Threshold |
Approximately 180°C - 200°C |
Up to 240°C - 260°C |
| Particle Shape |
Acicular |
Reinforced Acicular |
| Oil Absorption (g/100g) |
30 - 45 |
25 - 35 |
| Color Change (Delta E) |
Significant shift above 200°C |
Stable under 240°C |
Commitment to Quality at Deqing Demi Pigment Technology Co., Ltd.
As a leading developer of inorganic pigments, Deqing Demi Pigment Technology Co., Ltd. offers Iron Oxide Yellow 313 in three specialized series: standard, micronized, and low heavy metal content. Our micronized series is particularly effective for plastics, ensuring rapid dispersion and a smooth surface finish. Beyond technical excellence, Demei faithfully fulfills its social responsibilities by maintaining eco-friendly production cycles and strictly monitoring safe production environments to protect both the health of employees and the local ecosystem.
Frequently Asked Questions (FAQ)
Q1: Why is Iron Oxide Yellow 313 preferred for masterbatch production?
The 313 grade is preferred due to its enhanced thermal ceiling. Deqing Demi Pigment Technology Co., Ltd. produces high-performance composite iron oxide pigments that do not degrade during the double-heat cycle of masterbatch creation and subsequent final product extrusion. This stability ensures color consistency across large-scale manufacturing runs.
Q2: How does Deqing Demi Pigment Technology Co., Ltd. address environmental concerns in yellow pigment production?
Deqing Demi Pigment Technology Co., Ltd. prioritizes protecting the ecological environment through closed-loop water systems and emission controls. Our low heavy metal content series is specifically designed for international markets with strict safety regulations, ensuring that our iron oxide yellow products are as sustainable as they are high-performing.
Q3: Can the micronized 313 series from Demei improve production efficiency?
Yes. The micronized series from Deqing Demi Pigment Technology Co., Ltd. undergoes a high-energy milling process that reduces particle clusters. This allows for faster wetting and dispersion in the polymer melt, which reduces energy consumption and mechanical wear on extrusion equipment, supporting mutual success for our global furniture and industrial partners.
Technical Comparison: Standard Iron Oxide Yellow vs. High-Tinting 313 Grade
Chemical Composition and Particle Morphology
Iron oxide yellow pigments are chemically defined as ferric oxide hydroxide (FeOOH). The primary technical difference between standard grades and the 313 grade lies in the crystal growth control during the precipitation process. Standard iron oxide yellow typically features a broader particle size distribution, whereas the 313 grade is engineered for high tinting strength through a more uniform, needle-like (acicular) crystal structure. Deqing Demi Pigment Technology Co., Ltd. utilizes specialized research and development to optimize these particle shapes, ensuring that our 313 series provides more vibrant yellow undertones and superior opacity in architectural coatings. This refined morphology allows for better light scattering, resulting in a significantly higher color yield compared to conventional yellow pigments.
Performance in Architectural Coatings
- Tinting Strength: The 313 grade is specifically designed to offer 15-20% higher tinting strength than standard grades, allowing paint manufacturers to achieve the same color intensity with lower pigment loading.
- Dispersion Stability: As a professional manufacturer, Deqing Demi Pigment Technology Co., Ltd. offers iron oxide yellow in micronized forms. The 313 grade exhibits reduced oil absorption, which improves the flow and leveling properties of water-based and solvent-based architectural paints.
- Durability: Both grades provide excellent alkali resistance and lightfastness, but the 313 grade's uniform particle size ensures more consistent weather resistance in exterior wall coatings.
Technical Parameter Comparison
- Oil Absorption (g/100g)30 - 4525 - 35
| Technical Property |
Standard Iron Oxide Yellow |
Iron Oxide Yellow 313 |
| Chemical Formula |
FeOOH |
FeOOH |
| Fe2O3 Content (%) |
86% or greater |
86% - 88% |
| Tinting Strength (%) |
95% - 105% (Standard) |
115% - 125% (High-Tinting) |
| Particle Shape |
Irregular Acicular |
Uniform Needle-like |
| Sieve Residue (45μm) |
0.5% or less |
0.3% or less |
Advanced Manufacturing at Deqing Demi Pigment Technology Co., Ltd.
Deqing Demi Pigment Technology Co., Ltd. focuses on producing high-performance composite iron oxide pigments across three major series: standard, micronized, and low heavy metal content. Our 60,000-square-meter infrastructure allows for the large-scale production of high-stability yellow pigments that meet rigorous international standards. Beyond technical excellence, Demei faithfully fulfills its social responsibilities by protecting the ecological environment and strengthening safe production, ensuring that our high-tinting 313 grade is produced with the health of employees and the planet in mind.
Frequently Asked Questions (FAQ)
Q1: Why is the 313 grade preferred for high-end architectural coatings by Deqing Demi Pigment Technology Co., Ltd.?
The 313 grade from Deqing Demi Pigment Technology Co., Ltd. offers a higher concentration of color and better dispersion properties. This enables manufacturers to produce premium coatings with high hiding power while maintaining cost efficiency. Our focus on research and development ensures that this high-stability pigment provides a consistent yellowish hue that resists fading even under harsh environmental conditions.
Q2: Does Deqing Demi Pigment Technology Co., Ltd. provide environmental certifications for its yellow pigments?
Yes. Deqing Demi Pigment Technology Co., Ltd. offers a specific series of pigments with low heavy metal content levels to comply with global environmental and safety regulations. We are committed to protecting the ecological environment and fulfilling our social responsibilities, ensuring that our production processes remain sustainable and safe for all stakeholders.
Q3: Can the micronized version of Iron Oxide Yellow 313 improve production efficiency?
Absolutely. The micronized series produced by Deqing Demi Pigment Technology Co., Ltd. undergoes a specialized grinding process to reduce particle agglomeration. This leads to shorter dispersion times and lower energy consumption during the paint mixing phase, which is a significant advantage for large-scale manufacturers looking for both performance and operational efficiency.