CAS No.: 7727-43-7.
Molecular Formula: BaSO4.
Molecular Weight:233.4
EINECS NO.:231-784-4
H.S.Code:2833270000.
Properties: Non qualitative white powder. Non toxic, not soluble in water, soluble in smoking Sulphuric Acid, slightly soluble in boiling Hydrochloric Acid. Chemical property is stable, it'll reduce to Barium Sulfide when heat with carbon. It won't change color when meeting with hydrogen sulfide or toxic gas in the air.
Applications: Can be used as filler for paint, printing ink, rubber, plastic, insulating tape, surface paint agent for photo paper and copper plate. Sizing agent for textile. It also can be used in pigment, porcelain, storage battery, porcelain enamel, glass and flavor etc
Specifications: GB/T 2899-2008
| Items | Standard |
| Name | Barium sulfate precipitated |
| Barium sulfate content ≥ | 98.0 |
| Volatile at 105ºC% ≤ | 0.30 |
| Fe% ≤ | 0.004 |
| PH Value (100g/L) | 6.5-8.5 |
| Oil absorption g/100g | 15-25 |
| Whiteness ≥ | 94 |
| Water soluble matters % ≤ | 0.20 |
| Fineness(45um sieve reside)% ≤ | 0.20 |
| Moisture ≤ | 0.20 |
Storage: Should be guarded against dampness ,tear and pollution ,and keep away from coloured goods for storage.