Silicon Dioxide Supplier India | Precipitated Silica Powder

Silicon dioxide (SiO₂, precipitated and fumed grades) from Drashti Chemicals functions as flatting agent, flow aid, rubber reinforcement filler, and filter aid across Gujarat's paint, rubber, and pharmaceutical industries. Grade selection depends on particle size (BET surface area), oil absorption, and purity — request COA with mesh analysis and heavy-metal panel for export formulations.

Precipitated silica (white powder, 200–300 m²/g BET) for rubber compounding and toothpaste abrasive. Fumed silica (Aerosil-equivalent, 150–380 m²/g) for paint rheology control and silicone rubber reinforcement. Quartz flour (ground silica, 200–400 mesh) for epoxy flooring and refractory — lower cost, different function. Drashti matches grade to your current supplier spec on data sheet comparison.

Paint flatting: 2–8% by weight depending on gloss target — finer particle gives more matting. Rubber: 20–40 phr precipitated silica with silane coupling agent for tread compound. Filter aid: precoat on filter press for sticky pharmaceutical sludge. Dust control: wear N95 during handling — fine silica is respiratory irritant despite being inert chemically.

Packaging: 25 kg HDPE bags. MOQ one bag; bulk quote on request for 500 kg+ to paint and rubber manufacturers in Vapi and Ahmedabad. COA and MSDS per lot. Store dry — fumed silica is hygroscopic and affects rheology if moisture-loaded. GST 24AGLPC6288M1ZX. Drashti Vadodara.

Fumed vs. precipitated silica: fumed gives thixotropy and suspension in liquids; precipitated gives reinforcement in rubber and higher oil absorption in paint. Silica vs. calcium carbonate filler: carbonate is cheaper filler without rheology function; silica adds structure and matting. For RO antiscalant programs, colloidal silica in feed water is enemy — do not confuse filler SiO₂ with dissolved silica in water analysis.