Hydrophobic Fumed Silica

Technical Data

PROPERTIES	UNIT	SPECIFICATION	TYPICAL VALUE
pH	-	5.5-7.5	5.95
Ignition Loss, 1000℃	%	10max	5.01
Moisture Loss at 105℃, 2 hour	%	1.5max	0.26
Purity	wt%	99.8min	99.92
Carbon	%	4.5-6.5	5.23
Chloride (Cl)	ppm	250max	41

Products Description

CAS number: 67762-90-7

Chemical name: fumed silica, silicon dioxide

Molecular Formula:

Melting point: 1700°C

Boiling point: 2300°C

Density: 2.2 g/mL at 20°C

Hydrophobic fumed silica with a specific surface area (after modification):

100 ㎡/g.

130 ㎡/g.

150 ㎡/g.

160 ㎡/g.

170 ㎡/g.

Applications

(1) Hydrophobic fumed silica has small particle size, strong surface adsorption, large surface energy, good dispersion performance, thermal resistance, electrical resistance, so it can be widely used in electronic packaging materials.

(2) The advent of Hydrophobic fumed silica provides a new opportunity for the synthesis of resin-based composite materials.Improved strength and elongation, increased wear resistance and improved material surface finish.

(3) Hydrophobic fumed silica also can be used in fiber glass industry.It can improve fiber glass wear-resistance and heat resistance.

(4) Hydrophobic fumed silica also good drug carrier.Fumed silica as the carrier to adsorb the pesticide, which has a good slow-release effect.