Kaolin Calcined & Surface Mofidied Grade Specifications of ST-30A & ST-60B

Product Code	ST-303	ST-606
Physical Properties
Special Modifications	Amino-Silane Surface Treatment & Vinyl Functional Surface Treatment
Appearance	Highly Pulverized White Powder
Whiteness(F457)	>83	>83
Specific Density(g/cm3)	2.64	2.64
PH	4.5-6.5	4.5-6.5
Moisture Content(%)	1.00max	1.00max
x	x	x
Particle Size
45mm Left Over( % )	>0.01	>0.01
% Less than 20mm	100	100
10um	100	100
5 um	>95	>95
X	X	x
Chemical Composition
% SiO2	51.44	53.44
Al2O3	46.67	46.67
Fe2O3	0.59	0.59
TiO2	0.56	0.56

** ST-30A
ST-30A is surfaced modified for special performance characteristic. With superior hydrophobicity and excellent dispersion, ST-30A is highly compatible with polymers and more importantly, it improves performance of high-voltage cable insulation under circumstance of high moisture.

** ST-60B
ST-60B is also surface modified to increase its hydrophobicity and volume resistivity in plastic cable insulation. It provides improvement in physical and electrical properties over ST-30A.