مقدمة موجزة:
Iron Oxide Yellow, also known as hydrated ferric oxide or Pigment Yellow 42, is a yellow to brownish-yellow powder with the chemical formula α-FeOOH (or Fe₂O₃·H₂O). It has a fine particle structure and a density ranging from 4.0 to 5.0 g/cm³ depending on the specific grade. The pigment begins to decompose and lose its water of crystallization at temperatures above 150°C, transforming into iron oxide red. This pigment is non-toxic, insoluble in water and alcohols, and dissolves in acids. It exhibits excellent light fastness, weather resistance, alkali resistance, and good acid resistance. Its tinting strength and covering power are comparable to those of iron oxide red.
تحديد:
| غرض | مواصفة |
|---|---|
| مظهر | Yellow Powder |
| Full Shade (Compared with standard) | Similar-little |
| Tinting Strength (Compared with standard) % | 100±5 |
| Fe2O3 Content %, (m/m) | 86 |
| Matter Volatile at 105°C % ≤ | 1 |
| Water Soluble Matter % ≤ | 0.5 |
| Oil Absorption g/100g | 25~35 |
| Fineness (Residues on 45 μm mesh sieve) % ≤ | 0.5 |
| قيمة الرقم الهيدروجيني | 5~7 |
سمات:
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High covering power and tinting strength
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Excellent light fastness and weather resistance
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Good heat resistance (stable up to ~180°C)
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Superior resistance to alkalis
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Good resistance to dilute acids
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Non-toxic and insoluble in water
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Stable under normal conditions
التطبيقات:
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Used as a pigment in paints, coatings (waterborne and solventborne), and construction materials
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Applied in the coloring of plastics and rubber products
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Utilized in the manufacture of ceramics and glass
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Incorporated in the coloring of paper and inks
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Used for dyeing construction materials like concrete, bricks, and tiles
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Suitable for use in cosmetics and personal care products
الحزمة والتخزين:
Iron Oxide Yellow is typically packaged in 25 kg bags (paper/plastic) or as per customer requirements. It should be stored in a cool, dry place, away from moisture and direct sunlight, and protected from weathering. Ensure the packaging is tightly sealed after use to prevent contamination and absorption of moisture. Proper handling and storage will ensure the longevity and effectiveness of the pigment, with a recommended shelf life of up to 5-10 years under optimal conditions.