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Barytes-Natural Barium Sulfate

barytes, or barite is one of the most abundant and widely distributed minerals throughout the world. it is mined commercially for the base element barium, which is used as a function filler/pigment extender in the manufacturing of products like coating, rubber  plastics, ceramic, glass and friction materials, or used as a mud for sealing oil wells during the drilling process. barytes is aslo used for radiation shielding and additive in heavy concrete. the other main application is for production of barium chemicals. barytes are useful in such a variety of applications as they are chemically inert(eg. acid resistant).they have a high density, a low oil absorption, and a low refractive index, barytes are radiopaque ,and they are UV light reflectors. they positively impact the performance properties of formulated products.

General properties of barites-----natural barium sulfate

Molecular weight233.4     

Refractive index1.637

AppearanceDense white, yellow or other difference color      

Water solubility0.00285g/100g

Specific gravity4.20-4.50

Crystal structure Rhombic

Melting point1580  

Oil absorption 6-16

Mohs hardness3.0     

Dry brightness65-95