IRON OXIDE GREEN 835
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Technical Information
C.I.NO.:
Advantage:
Main Application Recommended: Coatings, Plastics
Features:
IRON OXIDE GREEN 835 has excellent light and weather fastness, retaining stable green without fading. It is co IRON OXIDE GREEN 835 is formulated to meet the rigorous demands of various industrial applications. Its superior performance in color stability and resistance to environmental factors makes it an ideal choice for manufacturers seeking reliability. The pigment’s versatility allows for seamless integration into diverse formulations, ensuring optimal results across multiple substrates. Thus, it stands as a preferred option for enhancing the quality and longevity of products. mpatible with coatings, plastics and other systems, with good hiding power and low usage.
Recommended Application:
wall bricks, cements, paving bricks, paintings, coatings, plastics, rubber and so on
Product Overview
Iron Oxide Green 835 is a high-performance inorganic green pigment produced by blending Iron Oxide Yellow (PY42) with Phthalocyanine Blue (PB15:3). This hybrid formulation combines the exceptional weather durability of iron oxide with the strong tinting strength of phthalocyanine chemistry, delivering a vivid, stable green shade that outperforms standard chrome oxide greens in brightness and versatility.
Industrial coatings manufacturers favor Green 835 for heavy-duty applications where long-term color retention is critical—architectural wall coatings, concrete coloring, and anticorrosion primers all benefit from its proven resistance to UV degradation and chemical attack. In plastics processing, its thermal stability allows trouble-free incorporation during high-temperature extrusion and injection molding without color shift. Unlike organic green pigments that can fade under extended sunlight, this iron oxide-based composite maintains its shade integrity for decades in exterior applications, making it the economical choice for construction materials, paving blocks, and industrial floor coatings. For masterbatch producers, its low oil absorption and consistent particle distribution ensure easy dispersion and reproducible color matching across production batches.
Technical Data:
| Product Information | ||||
| Chemical Type | CAS NO. | 51274-00-1, 147-14-8 | ||
| C. I. Name | The mixture of PY42 and PB15:3 | EINECS / ELINCS NO. | 257-098-5, 205-685-1 | |
| C. I. Constitution No. | Chemical Formula | |||
| Technical Performance | ||||
| Full Shade | Tint | |||
| Weather Resistance | 5 | 5 | ||
| Light Fastness | 8 | 8 | ||
| Physical Properties | ||||
| Physical Form | Powder | Moisture: | ≤1.0% | |
| Content(Fe3O4): | PH Value: | 6-9 | ||
| Oil Absorption: | 25-35 ml/100g | Density: | 0.4-1.8g/cm3 | |
| Residue on Sieve(90 sieve): | ≤0.3% | particle shape: | irregular shape | |
| Water soluble content: | ≤3.0% | Color strength: | 95%~105% | |
| Chromatic aberration △E: | ≤1.0 | |||
| Packaging | ||||
| 25kgs/bag 1000kgs/Pallet | ||||
| Storage | Shelf Life | 5 years | ||
| Should be stored in cool, dry and ventilate place. | ||||
| TRANSPORTATION | ||||
| Avoid inversion, sunlight, moisture and crash. Avoid damage the package. | ||||
Technical Parameter Guide
Weather Resistance (5, Full Shade / 5, Tint): Rated on a 1–5 scale where 5 indicates excellent outdoor durability. A score of 5 in both full shade and tint confirms this pigment maintains its green hue without chalking or fading even after years of exterior exposure—critical for architectural and construction applications.
Light Fastness (8, Full Shade / 8, Tint): Measured on the Blue Wool Scale (1–8), where 8 represents outstanding resistance to fading under intense light. This rating is among the highest achievable for inorganic pigments, making Green 835 suitable for applications exposed to direct sunlight including outdoor furniture coatings and façade panels.
Moisture Content (≤1.0%): Low residual moisture prevents agglomeration during storage and ensures consistent dispersion when incorporated into solvent-based or thermoplastic systems. Excess moisture can cause bubbling in extrusion processes—this specification eliminates that risk.
Oil Absorption (25–35 ml/100g): This moderate oil absorption range indicates good pigment wetting characteristics with efficient binder demand. Lower oil absorption translates to higher pigment loading capacity in coating formulations without excessive viscosity buildup—an advantage for high-solids industrial paints.
pH Value (6–9): Near-neutral pH ensures broad compatibility with various binder systems including alkyds, acrylics, epoxies, and polyurethanes. This range prevents acid-catalyzed side reactions that could compromise coating cure or long-term adhesion.
Density (0.4–1.8 g/cm³): The relatively low bulk density facilitates easy handling and volumetric dosing. This range is typical for synthetic iron oxide pigments and contributes to cost-effective coverage per unit weight.
Residue on Sieve, 90μm (≤0.3%): This specification confirms minimal coarse particles, which is essential for thin-film applications such as coil coatings and printing inks where surface smoothness directly impacts final finish quality.
Water Soluble Content (≤3.0%): Controlled water-soluble salts minimize the risk of osmotic blistering in protective coating systems and prevent electrical conductivity issues in specialized applications. This is an important quality indicator for iron oxide pigments used in demanding industrial environments.
Color Strength (95%–105%): This tight tolerance band on tinting strength ensures batch-to-batch color consistency, enabling manufacturers to maintain precise shade matching without reformulation between production lots.
Chromatic Aberration ΔE (≤1.0): A delta E value below 1.0 means color differences between batches are imperceptible to the human eye, ensuring absolute color fidelity for brand-sensitive applications such as architectural coatings and consumer goods.
Why Choose Honor Pigments?
- 🌍 Global Export Expertise — Trusted by customers in 40+ countries for consistent quality and reliable supply
- ✅ Strict Quality Control — ISO 9001 certified with batch-to-batch consistency and zero-defect policy
- 💰 OEM Production Advantage — Competitive pricing without compromising pigment performance
- 🧪 Technical Support — Free color matching, formulation advice and sample testing before bulk order
📩 Need more details?
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Frequently Asked Questions — Iron Oxide Green 835
What makes Iron Oxide Green 835 different from Chrome Oxide Green?
Iron Oxide Green 835 is a composite pigment blending PY42 (Iron Oxide Yellow) with PB15:3 (Phthalocyanine Blue), while Chrome Oxide Green (PG17) is pure chromium(III) oxide. The composite formulation of Green 835 produces a brighter, more vibrant green shade compared to the muted, olive-toned hue of chrome oxide. Green 835 also offers superior tinting strength due to the phthalocyanine component, requiring lower loading levels to achieve target color depth. Both pigments share excellent weather resistance, but Green 835 provides a wider color gamut for formulators who need a cleaner green tone for decorative and architectural applications.
Can Iron Oxide Green 835 be used in high-temperature plastic processing?
Yes. Iron Oxide Green 835 exhibits excellent thermal stability during plastic processing. The iron oxide component (PY42) withstands temperatures up to 300°C without color degradation, while the phthalocyanine blue fraction (PB15:3) remains stable to approximately 280°C. This thermal profile makes Green 835 fully compatible with polyolefin extrusion (PE, PP), engineering plastics processing, and PVC calendaring. For high-temperature engineering resins processed above 300°C, we recommend preliminary dispersion testing to confirm shade retention under your specific processing conditions.
What is the recommended dosage range for Iron Oxide Green 835 in concrete and construction materials?
For standard concrete coloring, a dosage of 2%–5% by weight of cement produces a uniform, medium-depth green tone. For paving bricks and architectural precast elements, 3%–6% loading achieves rich coloration with excellent UV durability. Green 835’s combination of PY42 and PB15:3 ensures the green shade remains stable in the alkaline environment of curing concrete (pH 12–13), where pure organic pigments would typically degrade. For optimal dispersion, pre-mix the pigment with a portion of fine aggregate before adding to the full concrete batch.
How does Iron Oxide Green 835 perform in water-based coating systems?
Iron Oxide Green 835 disperses readily in both water-based and solvent-based coating formulations. For aqueous systems, we recommend using a wetting agent at 0.5%–1.0% of pigment weight and dispersing at moderate shear (dissolver or bead mill). The pigment’s controlled pH (6–9) and low water-soluble salt content (≤3.0%) prevent flocculation and ensure long-term storage stability of water-based paints. Final coating films exhibit the same weather resistance (rating 5) and light fastness (rating 8) as solvent-based equivalents.