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Crystalline Silica Powder - 结晶硅微粉

Crystalline Silica Powder

Crystalline Silica Powder

Made from natural quartz through fine grinding and classification, featuring high purity, high whiteness, uniform particle size and stable chemical properties. Widely used in coatings, rubber, plastics, adhesives and other fields.

Specifications

SiO₂ Content≥99.5%
Whiteness≥92
Particle Size (D50)2-45μm
Mohs Hardness7
Density2.65 g/cm³
Moisture≤0.1%
Oil Absorption25-35 g/100g
PH Value6.5-7.5
Loss on Ignition≤0.3%
Conductivity≤50 μs/cm

Product Models & Specifications

Model Mesh D50 Purity Applications
ATH-1 — 1 μm ≥99.6% Wire & CableFlame Retardant
ATH-5 — 5 μm ≥99.6% PlasticsFlame Retardant
ATH-14 — 14 μm ≥99.6% General Flame RetardantRubber
ATH-25 — 25 μm ≥99.6% Solid SurfaceFlame Retardant
ATH-50 — 50 μm ≥99.6% Solid SurfaceCoarse Fill

Applications

Coatings Rubber & Plastics Adhesives Precision Casting Building Materials
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FAQ

What is aluminum hydroxide (ATH)?

Aluminum hydroxide is an eco-friendly halogen-free flame retardant filler that decomposes endothermically releasing water vapor. Non-toxic, low smoke.

What particle sizes are available?

Standard D50 from 1μm to 50μm, whiteness ≥92%. High whiteness grades available.

What is it used for?

Mainly used in wire & cable, engineering plastics, solid surface and latex products for flame retardancy.

Why choose halogen-free flame retardancy?

Halogen-free flame retardancy is eco-friendly, non-toxic, with low smoke, complying with RoHS/REACH regulations.

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