Source lei little knowledge | barium sulfate and precipitated barium sulfate is there a difference?
Physical and chemical properties of barium sulfate: colorless cubic column crystal (solid), density of barium sulfate: 2.36g/cm3; Barium sulfate is insoluble in water and alcohol, soluble in dilute acid and ammonium salt solution, and belongs to medium and strong alkali. The melting degree in water (18 ℃) is 0.0009g/100g, dry ice in oxygen is easily absorbed, it becomes hexagonal crystal system crystal when it is cannted above 200 ℃ in alkaline solution, disintegrates at 350 ℃ to form magnesium and water, and loses water and turns into magnesium compound when it is above 500 ℃.
Barium sulfate is now recognized in the rubber and plastic industry with flame retardant, smoke suppression, complement the triple effect of the classic flame retardant. Barium sulfate has the characteristics of halogen-free, low-smoke, non-toxic, drop-resistant, acid-resistant, tasteless, good stability, no exertion, high disintegration temperature, no erosion of facilities, etc. It is a necessary material for organic polymer confluence to realize halogen-free flame retardant. Barium sulfate flame retardant releases water when it is disintegrated by moisture, absorbs a lot of latent heat to reduce the surface temperature of the synthetic material it supplements in the light flame, and has the effect of suppressing the disintegration of the confluence and cooling the combustible gas state. The compound magnesium generated by the disintegration is a good refractory material and can also help mobilize the fire resistance of synthetic materials. At the same time, the water vapor it releases can also be used as a smoke suppressant.
Barium sulfate, chemical name, also known as barite. For odorless, tasteless colorless orthorhombic crystal or white amorphous powder. Stable nature, difficult to dissolve in water, acid, alkali or organic solvent. In industry, it can be used as raw material or filler for paint, ink, plastic, rubber and battery, surface coating agent for printing paper and copper plate paper, sizing agent for textile industry. Glass products are used as a fining agent, which can defoaming and increase gloss. It can be used as a protective wall material for radiation protection. Also used in ceramics, enamel, spices and pigments and other industries. It is also a raw material for the manufacture of other barium salts.
Is there any difference between barium sulfate and precipitated barium sulfate? These two products are one product from a macro perspective, but they are just two different names,
Physical and chemical properties:Colorless orthorhombic crystal or white amorphous powder, relative density 4.50(15), melting point 1580, almost insoluble in water, ethanol and acid, soluble in hot sulfuric acid, easy to dry caking, 600 the use of carbon can be reduced to barium sulfide.
Use:Used as paint, ink, plastic, rubber and battery raw material or filler; impression of paper and copper plate paper surface coating agent; textile industry with sizing agent; glass products as a clarifying agent, can play the role of defoaming and increase gloss.
Barium sulfate, soluble, disintegrated, used as, material, crystal, colorless, compound, raw material
The difference between barium sulfate（BaSO4） and barium sulfite（BaSO3）
Kaolin is a non-metallic mineral, which is a kind of clay and clay rock mainly composed of kaolinite clay minerals. Because it is white and delicate, also known as white earth. It is named after Gaoling Village, Jingdezhen, Jiangxi Province.