Molekula
Magnesium stearate
Magnesium stearate is a metallic soap used as a lubricant in pharmaceutical and cosmetic manufacturing. It is a white, odorless powder that improves flow properties in tablet and powder formulations. CAS: 557-04-0, Molecular Formula: [CH3(CH2)16CO2]2Mg, Molecular Weight: 591.24 g/mol, Storage: Ambient, Signal Word: Warning. Molekula supplies Magnesium stearate from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Overview
Magnesium stearate is a metallic soap used as a lubricant in pharmaceutical and cosmetic manufacturing. It is a white, odorless powder that improves flow properties in tablet and powder formulations. CAS: 557-04-0, Molecular Formula: [CH3(CH2)16CO2]2Mg, Molecular Weight: 591.24 g/mol, Storage: Ambient, Signal Word: Warning. Molekula supplies Magnesium stearate from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Specifications
| Property | Value |
|---|---|
| Appearance | Light fine powder |
| Water | ≤4.0% |
| Mesh | (1500) ≥98.0% |
| Free acid | ≤4.0% |
| Assay(Mg) | 4.0 - 5.0% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Shelf Life | 24 months |
| Acidity | Neutral |
Identification
| Property | Value |
|---|---|
| CAS Number | 557-04-0 |
| Molecular Formula | [CH3(CH2)16CO2]2Mg |
| Molecular Weight | 591.24 |
| SMILES | CCCCCCCCCCCCCCCCCC(=O)[O-].CCCCCCCCCCCCCCCCCC(=O)[O-].[Mg+2] |
| REACH Code | Y113 |
| TSCA Listed | Yes |
| HTS Code | 29157001 |
| Tariff Code | 2915705090 |
Safety & GHS
-
Explosive
GHS01
Hazard statements
- H315 Causes skin irritation
- H319 Causes serious eye irritation
- H335 May cause respiratory irritation
Precautionary statements
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P302+350 IF ON SKIN: Gently wash with soap and water
- P304+340 IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
- P308+313 IF exposed or concerned: Get medical advice/attention
For research and industrial use only
Documents
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Pricing & pack sizes
Synonyms
No alternate names recorded for this product.
Frequently asked questions
What is magnesium stearate used for?
Magnesium stearate is commonly used as a lubricant in pharmaceutical manufacturing and as a release agent in industrial processes.
What is the chemical formula and molecular weight of magnesium stearate?
The formula is [CH3(CH2)16CO2]2Mg with a molecular weight of 591.24 g/mol.
How should magnesium stearate be stored?
Store at ambient temperature, protected from moisture and direct sunlight.
What grade of magnesium stearate does Molekula supply?
Molekula supplies pharmaceutical-grade magnesium stearate suitable for use in drug formulations.
Can Molekula supply magnesium stearate in bulk?
Yes, Molekula can supply magnesium stearate in bulk quantities; please contact our sales team for pricing and availability.
What documentation comes with a magnesium stearate order?
Each order includes a Certificate of Analysis (CoA) and Safety Data Sheet (SDS) upon request.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.