Magnesium Stearate Quick Details

Chemical Name:Magnesium stearate
CAS No.:557-04-0
EINECS No.:209-150-3
Molecular Formula:C36H70MgO4
Chemical Structure:magnesium stearate chemical structure
Formula Weight:591.24
Other Names:Magnesium Octadecanoate
Applications:. Animal Pharmaceuticals

Magnesium Stearate Typical Properties

Item Specifications
Appearance A white,very fine,light,powder,greasy to touch
Identification A Freezing Point≥53ºC
Identification B Acid value:195-210
Identification C Conform
Identification D Conform
Solubility Insoluble in water,in absolute ethonal and in ether
Acidity or alkalinity Conform
Loss on drying ≤6.0%
Chloride ≤0.1%
Sulphates ≤1%
Lead ≤10ppm
Cadmium ≤3ppm
Nickel ≤5ppm
Stearic Acid ≥40.0%
Stearic Acid&Palmitic Acid ≥90.0%
Assay(Mg) 4.0-5.0%
TAMC ≤1000CFU/g
TYMC ≤1000CFU/g

Magnesium Stearate Packaging and Shipping

Bulk and packaged material in all regions of theworld:

  •  Bag, 20kg

magnesium stearate packaging

Magnesium Stearate Applications

This product can be used as the thermal stabilizer for PVC, the raw material of cosmetics, flour, soothing ointment and medicine tablet (forming agents, emollients); it can be applied to the bakelite powder to make it be lubricant, bright and transparent; it can also be applied to paint industry for being used as transparent flatting agents. The metal soaps for being used as a PVC stabilizer are mostly the high-grade fatty acid salt of cadmium, barium, calcium, zinc and magnesium. Forming groups belong to the salts of stearic acid and lauric acid. The performance of the metal soaps stabilizers is different with different types of metals and acid groups with the generally principles being as follow: Heat resistance: cadmium, zinc soap has an excellent heating resistance during the initial period; barium, calcium, magnesium and strontium soap have a long-term heat resistance with lead soap existing in the middle. Weather resistance: cadmium, zinc, lead, barium and tin soap are better. Workability: lead and cadmium soap have excellent lubricating property but acid radicals is also very influential to the lubrication. For the same kind of metal, it is better as aliphatic than the aromatic group. For aliphatic acid radical, longer molecular chain will also have a better lubrication property. It is widely used in food, pharmaceuticals, paints, plastics, rubber, textiles, etc. Barium, calcium, magnesium, strontium soap has a poor lubrication property but with excellent gelling property. Plate-out property: barium, calcium, magnesium, and strontium soaps are also prone to have plate-out phenomenon while zinc, cadmium and lead soap are less prone to get plate-out issue with longer molecular chain fatty acid soaps having more severe plate-out problem as well as more severe blooming issue. Lead and cadmium soap have high toxicity together with sulfide pollution. In the non-toxic formulation, people mostly apply calcium and zinc soap; sulfide contamination resistant formula more barium and zinc soaps. Magnesium stearate can be regarded as being non-toxic, the United States, Germany and Japan allow it to be applied to products being contact with food. However, it doesn’t have wide application to be applied as PVC heat stabilizers. In China and some other countries Pharmacopoeia, there are always records of this specie. The pharmacopeia has also made provisions on the magnesium content, moisture, heavy metals, iron, sulfate and chloride content.

Magnesium Stearate Storage

Keep container closed when not in use. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.

Customers of Zhonglan Industry

We have advanced extraction, isolation, purification, synthesis, fermentation equipment and technology with rich production experience and strict quality control system, and we have built a perfect sale service system, products are exported to Europe, North and South America, the Middle East and Asia Pacific and other five continents and scale the forefront in the nation, won good international reputation.

zhonglan industry customers

Why Choose Us

magnesium stearate manufacturer

  • active workteam and strict company system
  • Chinese factory’s price and high purity,product is fresh
  • rich experience of exporting pharmaceutical drug raw material
  • a large number of occasional reliable containers loading in Chinese sea port
  • fast shipment and friendly service after marketing
  • got good reputation and friendly cooperation in Europe and Southeast Asia