Metallic Salts(Zinc stearate,Calcium stearate,Magnesium stearate,Aluminium stearate)

Metallic stearates are compounds of metals and long-chain fatty acids. Some examples of metallic stearates include: 

• Zinc stearate

  A bulky powder with a characteristic odor that is insoluble in polar solvents like alcohol and ether. It is a powerful mold releasing agent and is used in the production of PVC, polystyrene, polyolefin, phenolic resins, and fiberglass-reinforced polyesters. 

• Calcium stearate

  A white powder that is an effective mold releasing agent and external lubricant in PVC processing. It also promotes fusion and is stable to heat. 

• Magnesium stearate

  A metallic salt boundary lubricant that is commonly used in the pharmaceutical industry. It is inexpensive, chemically stable, has a high melting point, and provides high lubrication. It is also important in protecting pharmaceutical tablets from disintegration and dissolution when they come into contact with water.