(4). Instant compound sodium metasilicate

[Properties index]:

Index	Value
Appearance	white powder
Grainsize	90% through 80meshes
Ca exchange	340-410
Mg exchange	320-390
PH (0.1%25)	≤10.9
Water insoluble matter (%)	≤0.5%
Solubility 60s	≥90%
Whiteness	≥85
Dirty removing power of compatible washing powder	1.05-1.20

Price in Meishan: 2,800Yuan/ton, 25kg in woven bag lined with plastic bag .