·Character Colorless transparent or sky-blue solid.

·Uses It is raw material to producing fine chemical product (such as silica gel, molecular screen, and precipitated silicon dioxide). It is also used in paper board, scour, paper making, welding rod, construction, metallurgy industries.

·Technical standard: GB/T4209-1996

Technical parameter

type	-1 type1		-2 type2		-3 type3		-4 type4
	first grade	up to grade	first grade	up to grade	first grade	up to grade	first grade	up to grade
item
dissolved solid % ≥	97.0	95.0	97.0	95.0	97.0	95.0	97.0	95.0
Fe % ≤	0.12	--	0.12	--	0.12	--	0.10	--
M	3.5-3.7		3.1-3.4		2.6-2.9		2.2-2.5