Kaolin Calcined Grade Specifications of ST-303, ST-606 & ST-808

Product Code	ST-303	ST-606	ST-808
Physical Properties		9	9
Appearance	Highly Pulverized White Powder
Whiteness(F457)	>85	>83	>93
Specific Density(g/cm3)	2.61	2.64	2.63
PH	4.5-6.5	5.0-7.0	5.0-7.0
Moisture Content(%)	1.00max	1.00max	1.00max
x	x	x	x
Particle Size
45mm Left Over( % )	>0.01	>0.03	>0.01
% Less than 20mm	100	100	100
10um	100	95	100
5 um	>93	>88	<95
X	X	x	X
Chemical Composition
% SiO2	51.43	53.44	52.3
Al2O3	46.76	44.67	46.2
Fe2O3	0.65	0.59	0.43
TiO2	0.39	0.56	0.54

** ST-303
Specialized designed for plastic and rubber electrical power cable, ST-303 has very good electrical properties and highly stable to acid, alkaline, light and heat. Its lamella structure can greatly improve surface hardness of finished articles.

** ST-606
Like ST-303, ST-606 is also specially designed for used as reinforcement in plastic and rubber electrical cables. With excellent hydrophobic property, ST-606 enables PVC and rubber wire insulation compounds to achieve perfect performance under both dry and wet circumstances.

** ST-808
ST-808 is a super fined grade with high whiteness. With special particle structure and high brightness, it can add excellent hiding power and tint strength to products. ST-303 is recommended to be used as fillers in paints and polyamides that brighter whiteness and cleaner colours are needed.