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Magnesium Stearate

Magnesium Stearate

CAS Number: 557-04-0

Molecular Formula: C36H70MgO4

Purity: ≥95%

End use functional additiveREACH (EU) RegisteredRoHS CompliantPharmacopoeia Standard: IP/BP/USPOleochemical: Lubricant, Release agent

About Magnesium Stearate

Magnesium Stearate is the magnesium salt of stearic acid supplied as a fine, white hydrophobic powder. C36H70MgO4 is best known as a pharmaceutical excipient lubricant, used to prevent tablets and capsules from sticking to particles and machinery during compression & it supports consistent dosing and tablet disintegrat...

Synonyms

  • aluminum monostearate
  • aluminum tristearate
  • ammonium stearate
  • calcium stearate
  • magnesium stearate
View all

Magnesium Stearate Specifications

CAS Number
557-04-0
Molecular Formula
C36H70MgO4
IUPAC Name
magnesium;octadecanoate
Canonical SMILES
CCCCCCCCCCCCCCCCCC(=O)[O-].CCCCCCCCCCCCCCCCCC(=O)[O-].[Mg+2]
InChI Key
HQKMJHAJHXVSDF-UHFFFAOYSA-L
InChI
1S/2C18H36O2.Mg/c2*1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18(19)20;/h2*2-17H2,1H3,(H,19,20);/q;;+2/p-2
EINECS Number
209-150-3
MDL Number
MFCD00084451
UNSPSC Code
12171700
eClass
39121017
HSN No
29157050 / 29157040 EP / 29157090
Melting point
88.5 °C (pure)
Solubility
Anhydrous ethanol, ether
Density
1.028
Purity
≥95%
Appearance
very fine, light, white to off white powder
Assay of MgO
7.39 %
GHS Hazard Statements
H315 (22.4%): Skin corrosion/irritation H319 (25.9%): Serious eye damage/eye irritation H335 (22.7%): Specific target organ toxicity, single exposure; Respiratory tract irritation H413 (18.4%): Hazardous to the aquatic environment, long-term hazard
Precautionary Statement Codes
P261, P264, P264+P265, P271, P273, P280, P302+P352, P304+P340, P305+P351+P338, P319, P321, P332+P317, P337+P317, P362+P364, P403+P233, P405, and P501

Pharmaceuticals

Tablet and capsule lubricant; flow aid in powder formulations

Plastics & Rubber

Mold release agent and processing lubricant

Cosmetics

Stabilizer and texture enhancer in powders and creams

Functional Features

Improves powder flow, prevents sticking, enhances hydrophobicity, and supports smooth processing.

Temperature

Store at 15–30 °C

Environment

Dry and sealed; protect from humidity

Protection

Store in original, tightly closed container

Packaging Options

25 kg bags; drums; custom packs for pharma grade

Shelf Life

24 months under recommended storage

COA
Download
  1. aluminum monostearate
  2. aluminum tristearate
  3. ammonium stearate
  4. calcium stearate
  5. magnesium stearate

Magnesium Stearate FAQs

Minimum Order Quantity

25 kg (pilot) · 1 MT (commercial)

Lead Time

3 – 5 weeks ex-works

Incoterms

FOB · CIF

Packaging

20 L pails, 200 L HDPE drums, 1000 L IBC

Regional Availability

India · EU · Middle East · Southeast Asia

Documentation

SDS · COA · TDS available on request

Compliance & Quality

REACH registered*

GHS/SDS available

ISO 9001:2015 site*

RoHS compliant*

Global sourcing network

Consistent quality & reliability

End-to-end technical support

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