Spherical Silica Powder SS-D-25

Product Description：
Characteristic
1． Spherical silica is kind of silica which has a spherical particles.
2． Spherical silica has characters of high purity, low specific surface, good fluidity, low thermal stress etc. 

Parameters Table：
Typical Physical Data

Items		Unit	Typical value	Test Method
Sieve Method	+75um	%	0.0068	Standard Sieve
Laser method	D10	µm	2.99	Laser Analyzer
	D50	µm	25.35
	D90	µm	59.65
S.S.A.		m2/g	2.0	Nitrogen Adsorption Method

 
 
Typical Chemical Data

Items		Unit	Typical value	Test Method
Chemical Composition	SiO2	%	99.85	Weight Method
	Fe2O3	ppm	60	Spectrophotometer
Moisture		%	0.03	Weight Method
Extraction Water	Ec	µs∕cm	1.7	Conductivity Meter
	Na+	ppm	0.5	AAS
	Cl-	ppm	1.3	Automatic Potential Titrator
	pH	—	5.2	PH Meter

Above specification are for common uses,and can be adjusted upon user’s request.

Application：
Applications
It is widely used in the fields of EMC, high-tech electronic materials, high grade paints, etc.