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High chroma and excellent color strength with consistent hue across batches.
Optimized dispersion stability in water-based and solvent-based systems.
Excellent lightfastness and weather resistance, meeting ISO 2135 standards.
Low volatile organic compound (VOC) content, supporting eco-friendly formulation requirements.
Non-hazardous classification per GHS; safe for industrial handling and transport.
Architectural and industrial waterborne coatings.
Concrete and cement-based coloring for precast and ready-mix applications.
Plastic masterbatches for PP, PE, and PVC compounds.
Printing inks for flexible packaging and labeling.
Construction adhesives and tile grouts requiring durable yellow pigmentation.
| Chemical Type | Synthetic Iron Oxide (α-FeOOH) |
| Product Form | Concentrated aqueous color paste |
| Appearance | Uniform yellow viscous liquid, free from grit or separation |
| Primary Applications | Water-based coatings, concrete colorants, plastics, inks |
| Key Features | High tinting strength, low dust generation, easy wetting |
| Benefits | Reduced dosing requirement, improved batch consistency, simplified integration |
| pH (10% aqueous dispersion) | 7.5 – 8.5 |
| Storage Stability | ≥12 months at 5–30°C in sealed container |
Q1: What types of coating systems is this color paste compatible with?
A: Yingcai Chroma-chem 844 is formulated for broad compatibility with water-based and solvent-based architectural coatings, industrial maintenance paints, and general-purpose decorative finishes. It disperses readily in acrylic, styrene-acrylic, PVA, and alkyd resin systems, though optimal performance requires standard dispersion protocols including high-shear mixing.
Q2: How stable is the yellow shade under UV exposure and elevated temperatures?
A: As an iron oxide-based pigment paste, Chroma-chem 844 exhibits excellent inherent lightfastness and thermal stability. The yellow 1863 hue maintains good color consistency in outdoor applications and resists significant fading or browning under typical service conditions, including prolonged UV exposure and moderate heat up to ~180°C during curing.
Q3: What is the recommended dosage range for achieving full opacity in architectural paints?
A: Dosage depends on the base formulation, desired chroma, and substrate coverage requirements. Typically, full opacity in white-tinted architectural emulsions is achieved at concentrations ranging from 0.1% to 2% by weight of the total formulation — with lower additions sufficient for pastel tones and higher levels used where strong hiding power and saturated yellow intensity are needed.
Q4: Does this paste contain heavy metals or restricted substances?
A: Chroma-chem 844 is manufactured using high-purity synthetic iron oxide pigments and complies with global regulatory expectations for general industrial use. It contains no intentionally added lead, mercury, cadmium, or hexavalent chromium, and is suitable for non-toy, non-food-contact applications where heavy metal restrictions apply.
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E-mail: wangxingqiang@ericwchem.com
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Building A1, Jiete Industrial Park, Huangpu District, Guangzhou City, Guangdong Province, China
