Magnesium stearate is an organic compound. It is a fine white, sandless powder with a smooth, creamy feel on the skin. Insoluble in water, ethanol or ether, mainly used as lubricant, anti - viscosity agent, flow aid agent. It is especially suitable for granulation of oil and extractum, and the granulation has good fluidity and compressibility. Used as a flow aid in direct compression tablets. It can also be used as filter aid, clarification agent and bubble drop agent, as well as suspension agent and thickening agent of liquid preparations.

Application of magnesium stearate:

1. This product is used as PVC heat stabilizer, as well as cosmetic flour, skin ointment and pharmaceutical tablet raw material (exciphate, lubricant); Used for school wood powder to make lubrication bright and transparent; Paint industry for transparent flatting agent, etc.

2. Widely used in food, medicine, coating, plastic, rubber, textile, etc.

3. It is a new pharmaceutical auxiliary material, which can be used as film forming and coating material of solid preparations, thickening agent and suspension agent of colloidal liquid preparations, etc.

4. Cosmetics used in powder products, can improve adhesion, lubricity, but also as a pharmaceutical tablet raw material.

Magnesium stearate - Determination of content:

Take about 0.2g of this product, weigh it accurately, add n-butanol-anhydrous ethanol (1: 1) 50ml of solution, 5ml of concentrated ammonia solution and 3ml of ammonium-ammonium chloride buffer (phLO.O), and then precisely adding disodium ethylenediamine tetraacetic acid titration solution (0.05mol/U25ml and a little chrome-black T indicator, mixed, heated in a water bath at 40 ~ 50°C until the solution was clarified. The solution was titrated with zinc titration solution (0.05mol/L) until the solution changed from blue to purple, and the titrated results were corrected by blank test. Each LML of ethylenediamine tetraacetic acid disodium titration solution (0.05mol/L) is equivalent to 1. 215mg Mg.

Magnesium stearate, chemical formula C36H70MgO4, molecular weight 591.24, is an organic compound, as a white sandless fine powder, with a smooth sensation on skin contact. Insoluble in water, ethanol or ether, mainly used as lubricant, anti - viscosity agent, flow aid agent. It is especially suitable for granulation of oil and extractum, and the granulation has good fluidity and compressibility. Used as a flow aid in direct compression tablets. It can also be used as filter aid, clarification agent and bubble drop agent, as well as suspension agent and thickening agent of liquid preparations.