Si Metal Powder 200 Mesh for Chemical Synthesis Silicone Materials and Industrial Processing

Synthesis chemistry cares about one thing above all: how much reactive silicon surface meets the reagent per unit time. A 200 mesh cut, centered near 75 μm, is the balanced answer — fine enough for workable conversion in chlorosilane and silane routes, yet coarse enough to flow, meter and store without heavy dust management. ZhenAn grinds this grade of Si metal powder in Anyang, Henan, and supplies it to synthesis plants and silicone material makers worldwide.

• Feedstock is smelted silicon metal, not silicon scrap or off-grade material.
• Crushing and ball milling run closed-circuit with air classification to hold the 200 mesh band.
• The finished powder is silver-grey with metallic luster and remains non-caking in lined bags.
• Every lot ships with a COA covering Si, Fe, Al, Ca and sieve residue.
• Custom sieve pass rates can be written into the order.

The powder inherits whatever grade of silicon metal it is milled from, so chemistry is a purchase decision, not an afterthought. Grade 553 runs Si 98.7% with iron, aluminum and calcium capped at 0.5%, 0.5% and 0.3% — serviceable for industrial processing. Grade 441 lifts silicon to 99.1% and tightens those caps to 0.4%, 0.4% and 0.1%. For synthesis work where trace metals poison catalysts, grade 3303 takes Si to 99.37% with Fe and Al at 0.3% and Ca at 0.03%. State the grade in the purchase order and the lab confirms it per batch.

1. Contact mass for methylchlorosilane synthesis — the front end of the silicone chain.
2. Feedstock for silicone monomer, silicone oil and silicone rubber lines.
3. Silane coupling agent chemistry built on elemental silicon.
4. Silicon nitride precursor powder for advanced ceramics.
5. General industrial processing that consumes fine silicon as a reagent.

An RFQ in three parts prices this powder cleanly. Part one, chemistry: name the grade or the impurity ceilings your process tolerates. Part two, physicals: confirm the 200 mesh cut and any residue limit your lab will enforce. Part three, commerce: volume, packing, incoterm and port. Written inquiries are answered daily.