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Product name：

BCA325 Precipitated Barium Sulphate

Character：
　　Crystal or bright amorphous power, relatively density 4.15(15℃)，melting point 1580℃, almost can’t dissolve in water, alcohol, acid. It ‘s chemical character is stable and also a kind of excellent fame dye

Use：
　　Used in coating ,plastic, rubber ,paper-making and protection against energetic ray. Universal stage are made according to national standard and certainly meet general needs. Moreover except the needs above high purity products are widely used in both fields of strong light and long time tolerance materials due to it’s high Barium Sulphate content ,less impurity, good dispersivity and narrow distribution of particles.

Production technology：
　　 Deoxidize Barytes with carbon then react together with Glauber's salt

Package：
　　Paper—plastic compound bag or Outer bag woven plastic , inner pellicle bag . Net weight 25kg,50kg

Sales picture：

Effect picture：

Technical index：

Type Item	BCA325 Barium sulphate
Type Item	Common grade	High pure grade
Content(BaSO₄),%　≥	98.0	98.0
PH	6.5-8.5	6.5-8.0
Iron(Fe)%　　　　≤	0.005	0.004
brightness　　 ≥	94	96
Sulfide %　　　　≤	0.005	0.004
Oil absorption(g/100g)	15-25	15-25
Moisture content%　　　　　 ≤	0.20	0.20
Water soluble materia%　　　　≤	0.30	0.20
Acid soluble material %　　　　≤	1.0	0.30
tailover(325meshes),%	0.10	/

Determined Method

　　Determination on Barium Sulfate:Melt sample with the mixture of Natrium Carbonate and Kalium Carbonate at high temperature, in this way Sulfate bocomes Barium Carbonate.Then use continue determination by weight---method
　　Determine PH value:According toGB/T1717，turn setting for 5min into setting for 10min
　　Determine Iron:Operate according toGB/T3049
　　Determination of brightness:To make bright board use sample depressor. Compare it standard sample of magnesium oxide.
　　Test oil absorption:Test the quantity of sample’s absorption of fine linseed oil under regular conditions
　　Test water soluble material%:Operate according to the instructions of GB/T5211.2.
　　Test brightness:To make bright board use sample depressor. Compare it standard sample of magnesium oxide.
　　Test tailover:Scatter sample in water and put them into screen, repeat several times .Flush substance on screen until lotion is clear, just then dry and weigh it.

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