Gaseous Silica Colloidal Silica Technical Grade Precipitated Silica CAS: 7631-86-9

Basic Info

Model NO.	silica
Particle Size	10-15nm/etc
Application	Printing and Coating; Rubber, Printing, Coating
Transport Package	Bag
Specification	10kg/20kg
Origin	China
HS Code	2811229000
Production Capacity	10000ton/Month

Product Description

Brief introduction

Product name: Silicon oxide SiO2Purity: 99%-99.999%Particle size: 20-30nm, 50nm, 100nm, 45um, 100un, 200um, etcType: hydrophilic, hydrophobicColor: white powderBulk Density: <0.10 g/cm3True Density: 2.4 g/cm3Ultraviolet Reflectivity:>75%.

Features:

Nano-silica particles according to their structure are divided into two types: P-type (Porous particles ) and S-type (Spherical particles). P-type nano-silica surface contains a number of nano-porous with the pore rate of 0.611ml /g; therefore, P-type has much larger SSA comparing to S-type (See US3440). US3436 is S-type and its SSA is ~170-200m2/g. Further more, P-type ultraviolet reflectivity is >85% , S-type: >75%.

Product	Hydrophilic Silicon dioxide
CAS No:	7631-86-9
Quality	99.9%min
Test Item	Standard
Appearance	White powder
Whiteness	98%
SiO2	99.9%
PH value	4.5-5.5
BET m2/g	200+25
105ºC Loss on drying	0.5%-1%
Loss on Ignition	1%-1.5%
Particle size	20-30nm
Package	20kg/bag
Conclusion	Comply to the enterprise standard

Test Methods:

1. Transmission electron microscopy (TEM) method, nano-silica particle has small size, narrow particle size distribution.2. BET method, nano-silica particle has large specific surface area.3. Infrared spectroscopy method, nano-silica particle exists a large number of hydroxyl groups and unsaturated residual bonds on its surface, and forms the deviation from the steady state of the silicon oxide structure.4. Cary-5E spectrophotometer testing method, nano-silica particles--high reflectivity to long wave and visible light about UV.5. Omnisorp100CX surface area and porosity analyzer, P-type nano-silica surface contains a number of nano porous with the pore rate of 0.611ml /g.Packaging & Shipping

FAQ

1.We accept all payment TT,LC,DP,Paypal. But for first time, we only do LC or TT.

2. What's your delivery time? Usually we will arrange the shipment in 7 -15 days.

3. How about the packing? The packing we usually provide is 25kg/bag, cartons and barrels. Of course, if you have special requirements for them, we will according to your request.

4. How about the validity of the products? According to the products you ordered.

5. What documents you provide? Usually, we provide Commerical Invoice, Packing List, Bill of loading, COA , Health certificate and Origin certificate. If your markets have any special requirements, let us know.

6. What is loading port? Usually is Shanghai,Qingdao or Tianjin.