Chemical name: Short fiber wollastonite

Molecular Formula: CaSiO₃

Properties: Wollastonite is a calcium metasilicate mineral, white. The crystal structure is fine granular. Uses: Mainly used in ceramics, coatings, paper, plastics, rubber and other industries. Packing: Composite plastic woven bag 25KG/bag  

Index Item	Internal Control Index
	GR-501	GR-503	GR-505	GR-506	GR-509
Silicon dioxide % content ≥	46	46	47	47	47
Calcium oxide % content ≥	49	49	48	48	48
Ferric oxide % ≤	0.25	0.25	0.20	0.20	0.20
Magnesium oxide % ≤	0.9	0.9	0.8	0.8	0.8
Aluminum oxide % content ≤	0.13	0.13	0.12	0.12	0.12
Moisture % ≤	0.30	0.30	0.35	0.35	0.35
Whiteness % ≥	91	92	93	93	93
D50 (μ m)	20	15	8	5	2
Residue on 325mesh %≤	0.3	0.1	0.05	0.01	__
PH (10% suspension)	9	9	9	9	9
Loss on ignition %	3	3	3	3	3

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