Magnesium Stearate
Specification: Magnesium Stearate
Hs Code: 3824999999
CAS Number: 557-04-0
packaging: 10kg/bag
MOQ: 1000kg
Qty in 20’fcl: 5tons
Description
Magnesium Stearate is the most widely used lubricant in tablet and capsule manufacturing, composed of magnesium and stearic acid from vegetable origin. It is a fine, white powder with a soft, greasy feel that forms a thin, low-friction film between the powder blend and the surfaces of punches and dies during compression. This film reduces ejection force, prevents sticking and picking, and protects tooling from wear - the reasons no high-speed tableting line can do without it. Beyond tableting, it acts as an anti-adherent and flow aid in encapsulated powders and dry blends. Compliant with USP, BP, EP and CP pharmacopeia requirements, it is produced under strict purity and microbiological controls, making it the dependable, industry-standard lubricant for pharmaceutical and nutraceutical manufacturing worldwide. It is packed in 10 kg kraft bags or fiber drums, with vegetable-origin stearic acid suited to modern supplement labeling. Its lubricant effect holds even in long, high-speed compression campaigns. In practice it is blended with the granulation for the last few minutes before compression, where over-lubrication risk is managed by short mixing times. Its consistent particle quality keeps ejection forces stable across campaigns. The product is manufactured under strict hygiene controls with documented test results for purity, heavy metals and microbial safety, ready for audit when customers require. How Magnesium Stearate works: during the final minutes of blending, the stearate's flat, plate-like particles shear across the surfaces of granules and tooling, depositing a monomolecular lubricating film. When compression begins, this film reduces friction between powder and die walls, cutting ejection force by an order of magnitude and preventing sticking and picking on punches. The result is smooth high-speed production and extended tooling life. Practical guidance: blend for the last three to five minutes only, since over-lubrication can slow tablet dissolution; use levels typical of the industry to protect both production and dissolution profiles; and apply it in capsules and powder blends as an anti-adherent. Quality assurance: produced under USP, BP, EP and CP pharmacopeia requirements with stearic acid composition, magnesium content, heavy metals and microbiology tested per batch, documented for regulatory files. Packed in 10 kg kraft bags or fiber drums. For any tableting operation, magnesium stearate remains the indispensable final ingredient. Specification highlights: it is packed in 10kg/bag with a minimum order quantity of 1000kg. Certificates of analysis accompany every shipment, and sample supply, specification customization and flexible payment terms are available for qualified buyers, supported by the standardized seven-step service process from inquiry to after-sales support. Quality system overview: production follows the food-grade or pharmacopeia standards listed in the specification, with defined raw-material sourcing, in-process checks and final release testing on every batch. Purity, heavy-metal and microbiological results are documented, and the complete dossier - specification, certificate of analysis and batch records - is available to support buyer audits and regulatory dossiers. Original packaging is maintained through storage and shipping to protect the product, and shelf life is stated on the specification. Buyers qualify once and rely on the same documented quality for every subsequent order.
Applications
It is used as a lubricant in pharmaceutical tablet and capsule production to guarantee smooth ejection and protect compression tooling. Nutraceutical makers add it to supplement tablets, hard capsules and powder blends to prevent sticking during high-speed production. Confectionery and food applications use it as an anti-caking and anti-sticking agent in pressed candies and powdered products, and cosmetic powders use it for slip and skin feel.
Advantages
A tiny amount of magnesium stearate is enough to keep production lines running without sticking, picking or tooling damage, directly protecting yield and machine uptime. Its multi-pharmacopeia compliance (USP, BP, EP, CP) means one material serves customers across global markets without re-qualification. Consistent particle and purity profile, dependable supply and flexible 10 kg packaging make it the low-risk default lubricant for any tableting operation.
Specifications
Magnesium Stearate
Comply with USP, BP, EP and CP
| Item | USP/BP/EP | CP |
| Identification | Conforms | |
| Acidity or Alkalinity | Conforms | |
| Loss on Drying (%) | ≤6.0 | ≤5.0 |
| Chloride (%) | ≤0.1 | ≤0.10 |
| Sulfate (%) | ≤1.0 | ≤0.6 |
| Lead (ppm) | ≤10 | —— |
| Cadmium(ppm) | ≤3 | —— |
| Nickel(ppm) | ≤5 | —— |
| Relative Content of Stearic Acid and Palmitic Acid (%) | ≥40.0 ≥90.0 | |
| Assay (Mg)(%) | 4.0-5.0 | |
| Iron (%) | —— | ≤0.01 |
| Heavy metals(ppm) | —— | ≤15 |
| Total aerobic Microbial Count | ≤1000Cfu/gram | |
| Total yeast&mould count | ≤100Cfu/gram | |
| Escherchia Coil | Absence/ 1gram | |
| Salmonella | Absence/ 10gram | |
Cas No. 557-04-0 HS Code: 3824999990
Main Purpose: Lubricants,Anti-adhesive,Glidant.
Package: 10kg/kraft bag or 10kg/fiber drum
Packing Size: 3.5cb m/mt(bag) or D37cm*H53cm(drum)
G.W. 10.2kg(bag) or 12.5kg(drum)
FAQ
Q1 : Do you provide samples? is it free or extra?
Yes, we could offer the sample for free charge but do not pay the cost of freight.
Q2 : Do you accept customization?
We can produce according to your indicators.For specific details, please consult
Q3 : How long is your delivery time?
Generally it is 5-10 days if the goods are in stock. or it is 15-20 days if the goods are not in stock.
Q4 : What is your payment terms?
T/T, L/C, Credit Card, PayPal, Cash.
Accepted Payment Currency:USD,EUR,JPY,CAD,AUD,HKD,GBP,CNY,CHF;
Q5 : How do you ship the products?
By Sea ,By Air ,By courier, Fedex, UPS Etc. It is up to you.
Q6 : What’s the MOQ?
Different products result in different MOQ
For specific details, please consult
What's the order process?
1) Inquiry --- Share your initial requirements with us; we will establish a communication channel and learn about your needs and background.
2) Requirement Alignment --- We discuss technical parameters, application scenarios and regulatory requirements in depth to define the details and delivery standards.
3) Product Confirmation & Quotation --- We provide compliant product options and a detailed quotation covering specifications, pricing and minimum order quantity.
4) Order Processing & Payment Plan --- Contract terms are confirmed and flexible payment arrangements are made, keeping every transaction safe and compliant.
5) Shipping Plan --- We select the optimal shipping route and coordinate customs clearance and insurance to ensure your cargo is dispatched safely and on time.
6) Inspection & Tracking --- We provide quality inspection reports and full logistics tracking, keeping product quality controlled and the shipment fully transparent.
7) After-sales Service --- Technical support, prompt issue response and continuous improvement suggestions build a long-term partnership and ensure your satisfaction.