- Chinese Trustworthy Manufacture of Silica Fume
Product Center
Full product range · 5 series · 16 products · Click a category to jump
Full product range · 5 series · 16 products · Click a category to jump
Typical values from recent production batches · per-shipment COA on request
| Parameter | Undensified | Densified | ASTM C1240 | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 85U | 90U | 92U | 94U ★ | 95U | 96U | 98U | 99U | 85D | 90D | 92D | 94D | 95D ★ | ||
| SiO₂ ≥ | 85% | 90% | 92% | 94% | 95% | 96% | 98% | 99% | 85% | 90% | 92% | 94% | 95% | ≥ 85% |
| LOI ≤ | 6% | 4% | 4% | 4% | 2% | 2% | 2% | 2% | 6% | 4% | 4% | 4% | 2% | ≤ 6% |
| Bulk density | 300–380 kg/m³ (as produced) | 600–680 kg/m³ | report | |||||||||||
| Surface area | 15–20 m²/g | 15–20 m²/g | ≥ 15 m²/g | |||||||||||
| Activity index 28 d ≥ | 105% | 105% | 108% | 110% | 112% | 115% | 120% | 120% | 105% | 105% | 108% | 110% | 115% | 100% |
| Moisture ≤ | 1.5% | 1.5% | ≤ 3.0% | |||||||||||
| Chloride Cl⁻ ≤ | 0.1% | 0.1% | — | |||||||||||
Click a grade header to open that product page (TDS + COA + Quick Inquiry) · Numbers are typical —
request the COA for your shipment.
Low-Chloride series: Cl⁻ ≤ 0.05% — see the Low-Chloride Silica Fume page ·
Zirconium grades (ZrO₂ series) follow a separate TDS — see Zirconium Silica Fume.
25kg soluble paper bags, 42 per pallet — space-saving, forklift-friendly and fast to load into containers.
Pallets secured with stretch film for safe loading, unloading and long-distance ocean shipping.
25kg moisture-proof kraft paper bags with inner PE liner — easy to carry, ideal for construction sites.
500–1000kg plastic woven bags, 2 per pallet, with or without bottom discharge spout — built for bulk handling.
Your own logo, bag design and marking — professional OEM service to build your brand worldwide.
Call Us
+86 13109355617Email Address
ewende@microsilica-si.comFour key things buyers ask about grades, applications, samples and purchasing.
Both share the same amorphous SiO₂ chemistry. Undensified silica fume is as-produced powder (300–380 kg/m³) with the highest reactivity per kilogram — ideal for UHPC and high-performance concrete. Densified silica fume is compacted (500–650 kg/m³), cutting freight and storage cost and feeding smoothly through pneumatic lines. Pick undensified for performance, densified for logistics.
For UHPC, refractory castables and white cement use 99% white silica fume or 98%. For high-strength, marine and shotcrete choose 92%, 94% or 95%. 96% low-chloride (Cl⁻ ≤ 0.1%) suits prestressed and marine structures, while zirconium silica fume (~3% ZrO₂) is for thermal-shock-resistant refractories.
Yes. We provide free samples of any grade together with the latest TDS, COA and SDS so you can verify SiO₂ content, bulk density and activity index in your own lab. Tell us the grade and delivery address via our contact form and our engineer replies within 24 hours.
We supply 25 kg bags, 500–1,000 kg big bags and bulk tanker, all with anti-static liners for dust control. Standard MOQ is one 20' container (~18–20 t), lead time 7–15 days after sample approval. Every grade meets ASTM C1240, AASHTO M307 and EN 13263-1, with SGS inspection available.
Send us your specs and our engineer will reply within 24 hours.
GET A QUOTE
One form, twelve grades. A sales engineer replies with the full FOB price list + freight to your port — or just the grades you mark.
Sichuan Ewende New Material Co.,Ltd©2022-All rights reserved.
