Introduction

Colloidal Silica is a colloidal solution, odorless and non-toxic, and it can be expressed as formula mSiO₂·nH₂O.

1.Colloidal particles is very small, and with large surface area, the particle itself is colorless and transparent, it will not affect the color cover.

2.Being low viscosity and water infiltration to every place, the dispersion and permeability is very good when mixed with other substances.

3.The colloidal particles is firmly attached to the object's surface to form siloxane between particles when Colloidal Silica water evaporates, so the combination is a good adhesive.

Application

1. It is used as a variety of refractory binders, and has such characteristics as strong bonding and resistance of high temperature(1500-1600'C)and so on.

2. lt has such functions as strengthening the coating, good adhesion properties, anti-dust & fouling, anti-aging, anti-fire when it is used in the coatings industry.

3. It can be used to increase the intensity and casting finish when used in the shell-type the precision casting. Their modeling quality is better than water glass, and it can be used to reduce the cost and improve the operating conditions instead of the silica acid ethyl modeling.

4. Colloidal Silica has a higher specific surface area, and can be used in catalyst manufacturing and catalyst carrier.

5. It can be used as anti-tack agent of cellophane, pre-treatment agents of photographic paper, and anti-slip agent of cement bag for the paper industry.

6. It can be used as sizing agents in the textile industry together with the oil agent in dealing with the wool and rabbit hair, to improve the spin ability of wool and rabbit hair, reduce breakage, prevent flying, and improve yield to increase economic benefit.

7. It can be used as silicon steel sheet agent, treatment agent, dispersing agent of CRT, anti-slip agent of floor wax and other products.

Technical Specifications

Items	Technical Data
	Acid without stabilizer			Alkaline with sodium					Alkaline with ammonium
	SW-20	SW-25	SW-30	JN-20	JN-25	JN-30	JN-40	JN-50	JA-20	JA-25	JA-30	JA-40
SiO2 %	20.0-20.4	25.0-26.0	30.0-31.0	20.0-220.4	25.0-26.0	30.0-31.0	40.0-41.0	50.0-51.0	20.0-20.4	25.0-25.4	30.0-31.0	40.0-41.0
Na₂O %≤	0.03	0.06	0.06	0.2		0.28	0.38	0.7	0.03	0.04	0.1	0.15
PH	2.5-3.5			9.1-9.8					9.0-10.0
Viscosity at （25℃/mpa·s≤）	2.5-5.0	3.0-5.0	4.0-6.8	2.5-5.0	3.0-5.0	4.5-7.0	15.0-25.0	30	2.5-5.0	3.0-5.0	7	25
Density （25℃/(g/cm³）	1.12-1.14	1.15-1.17	1.19-1.21	1.12-1.14	1.15-1.17	1.19-1.21	1.28-1.30	1.38-1.40	1.12-1.14	1.15-1.17	1.19-1.21	1.28-1.30
Average Particle（nm）	As agreed; like following <10:10-20:21-40:41-60;61-80;81-100;≥101
Package	Rubber Drums of 25kg, 250kg or lBC package of 1250kg
Note: Density of particles under 10 as agreed