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M-700 Precipitated Barium Sulfate is a high-purity, ultra-fine inorganic filler produced by Yunfu Hongzhi New Materials Co., Ltd. using an exclusive sulfuric acid precipitation process with stringent parameter control and multi-stage classification filtration. It is engineered for demanding B2B applications in industrial coatings, automotive OEM and refinish paints, pigment dispersions, ink formulations, and engineering plastic composites. Key performance advantages include exceptional particle uniformity (D50 = 0.7 µm), ultra-high whiteness (≥98%), low surface energy for superior dispersion, minimal oil absorption (13 g/100g), and outstanding chemical inertness. Its high BaSO₄ content (≥98.0 wt%) and neutral pH (8.0) ensure formulation stability, reduced viscosity, improved suspension, and enhanced weather resistance — making it ideal for premium-grade functional materials across chemicals, coatings, and advanced plastics industries.
1. Ultra-fine particle size (D50 = 0.7 µm) with narrow distribution ensures smooth dispersion and high gloss in coatings and inks.
2. High purity (≥98.0 wt% BaSO₄) and absence of sulfides/black specks guarantee color fidelity and batch consistency.
3. Low oil absorption (13 g/100g) reduces binder demand and lowers system viscosity without sacrificing opacity.
4. Neutral pH (8.0) and low moisture (≤0.3%) enhance storage stability and compatibility with acrylic, polyester, and alkyd resins.
Store in a cool, dry, well-ventilated area away from direct sunlight and moisture. Shelf life is 24 months when sealed and stored under recommended conditions. Transport as non-hazardous general cargo; avoid contamination and physical damage to packaging. For optimal dispersion, pre-mix with resin or solvent using high-shear mixing before adding other components. Use appropriate PPE (dust mask, gloves, safety goggles) during handling to avoid inhalation of fine powder; not classified as hazardous per GHS but good industrial hygiene practices are essential.; Storage condition: bag; Shelf life: bag; Pack size: bag
