Hongyunyuan brand super-fine barium sulfate has high purity of 98% and super whiteness of more than 94%. so it has excellent chemical inert. Its insolubility in water and acid is the stable foundation of all kinds of systems. It is a kind of consitutive pigment with outstanding performances.

The major technical performances (Q/Hyy001-2002)

Content of barium	98%
whiteness	94%
oil absorption g/100g	8-10
fineness	800-3000
CaO <	0.36
Water-soluble substances %	0.10
water %	0.50
PH value	8-10
Density	6.5-8.5

Packing: 25 or 50kg/bag.