Why magnesium stearate has good fluidity and compressibility
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Author : Lzh
Update time : 2023-02-04 13:57:02
What is magnesium stearate? Magnesium stearateis a white, easy and sand-free fine powder; Slightly smelly; It feels greasy in contact with the skin. It is insoluble in water, ethanol or ether and is mainly used as a lubricant, anti-viscosity agent, and flow aid. It is especially suitable for the granulation of oils and extracts. The particles made have good fluidity and compressibility. It can also be used as a flow aid in direct compression tablets. It can also be used as a filter aid, a clarifying agent, a foaming agent, a suspension aid and a thickening agent for liquid preparations.
Synthesis of magnesium stearate 1. Preparation of sodium stearate: dissolve 4.25 parts of sodium hydroxide in 50 parts of water, and raise the temperature to 85 ℃ for standby. Put 25 parts of stearic acid into the reaction kettle, heat 500 parts of water, stir and dissolve, and adjust the temperature to 85~90 ℃. Slowly add the prepared sodium hydroxide solution into the stearic acid aqueous solution under stirring, maintain the temperature to 75~80 ℃, and stir the reaction to the endpoint. The product sodium stearate solution is kept warm for standby 2. Neutralize 46.6g of stearic acid with 164mL of 1mol/L sodium hydroxide solution to obtain 50g of sodium stearate in 2L water. Heat the prepared sodium stearate solution to 80 ℃. Add the solution prepared by dissolving 20g of magnesium chloride in 100 mL water by dropping. After continuous stirring, the white residue will be precipitated quickly. After cooling, filter it out, wash it with water until there is no chloride ion, and wash it with ethanol. Place 10g of product in a vacuum dryer with concentrated sulfuric acid for four weeks. The product Mg (C18H35O2) 2 · 2H2O is obtained. The remaining product is dissolved in benzene and heated under reflux for 20min. The yellow liquid layer in the upper layer is poured out while hot and evaporated to dryness. The solid obtained can be recrystallized with benzene to obtain the product Mg (C18H35O2) 2.
Use of magnesium stearate 1. The product is used as a heat stabilizer for PVC, as well as as a raw material for cosmetic sticky flour, skin cream and pharmaceutical tablets (shaping agent, lubricant); It is used in wood correction powder to make it shiny and transparent; The paint industry is used as a transparent matting agent, etc 2. Widely used in food, medicine, paint, plastic, rubber, textile, etc 3. It is a new type of pharmaceutical auxiliary material, which can be used as a film-forming coating material for solid preparations, thickener and suspension agent for colloidal liquid preparations 4. Cosmetics can be used for powder products to improve adhesion and lubricity and can also be used as raw materials for pharmaceutical tablets.
Price of magnesium stearate Magnesium stearate particle size and purity will affect the product's price, and the purchase volume can also affect the cost of magnesium stearate. A large amount of large amount will be lower. The price of magnesium stearate can be found on our company's official website.
Magnesium stearate supplier Luoyang Tongrun Nano Technology Co. Ltd. (TRUNNANO) Luoyang City, Henan Province, China, is a reliable and high-quality global chemical material supplier and manufacturer. It has more than 12 years of experience providing ultra-high quality chemicals and nanotechnology materials, including magnesium stearate, nitride powder, graphite powder, sulfide powder, and 3D printing powder. If you are looking for high-quality and cost-effective magnesium stearate, you are welcome tocontact usor inquire any time.
