Magnesium Stearate
CAS Number: 557-04-0
Chemical Formula: C36H70MgO4
Synonyms:OCTADECANOIC ACID MAGNESIUM SALT, STEARIC ACID MAGNESIUM SALT, MAGNESIUM OCTADECANOATE
Appearance: White powder
MOQ (Minimum Order Quantity): 1 FCL (Full Container Load)
Products Description
Magnesium stearate, also known as octadecanoic acid magnesium salt, is a white solid powder at room temperature. Its molecular formula is Mg(C18H35O2)2, consisting of two stearate anions and one magnesium cation (Mg2+). It melts at around 120 °C, is insoluble in water, and is generally recognized as safe for human intake at doses below 2500 mg/kg per day.
Chemical Properties
| Item | Value |
| Melting point | 200 °C (lit.) |
| density | 1.028g/cm3 |
| storage temp. | Inert atmosphere,Room Temperature |
| solubility | alcohol: insoluble |
| form | Fine Powder |
| color | White |
| PH | 7 (H2O) (slurry) |
| Odor | wh. soft oily powd., tasteless, odorless |
| Water Solubility | Insoluble |
| Merck | 145,690 |
| BRN | 3919702 |
| Exposure limits | ACGIH: TWA 10 mg/m3; TWA 3 mg/m3 |
| Stability: | Stable. Incompatible with strong oxidizing agents. |
| InChIKey | DRJIJXNWSSRTTE-UHFFFAOYSA-M |
| LogP | 8.216 (est) |
| CAS DataBase Reference | 557-04-0(CAS DataBase Reference) |
| EPA Substance Registry System | Magnesium stearate (557-04-0) |
Safety Information
| Item | Value |
| Hazard Codes | Xi |
| Risk Statements | 36/37/38 |
| Safety Statements | 26-37/39 |
| WGK Germany | – |
| RTECS | WI4390000 |
| TSCA | Yes |
| HS Code | 29157030 |
| Hazardous Substances Data | 557-04-0(Hazardous Substances Data) |
| Toxicity | LD50 orally in Rabbit: > 2000 mg/kg |
Product Application
Magnesium stearate has long been widely used in the food sector as an emulsifier, binder, thickener, anticaking agent, lubricant, release agent and antifoaming agent. It is widely found in food supplements, confectionery, chewing gum, seasonings and baking materials. It is also widely used as an excipient in pharmaceutical tablets, capsules and powder production. Its excellent lubricity comes from its hydrophobicity, which reduces friction between tablets and mold surfaces during ejection.
Supply & Delivery
Fast delivery time
Inventory: 2-3 working days
New production: 7-10 working days
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