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Thermo Scientific™ Magnesium stearate, ≥90.0%
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Specifications:
| Application | Organic Synthesis | ||
| Storage Temperature | Ambient | ||
| Product Type | Amino Acid & Biochemicals | Forms | Powder |
| Product Brand | Thermo Fisher Scientific™, thermo Scientific | ||
| Product Grade | Analytical grade | Formula | C₃₆H₇₀MgO₄ |
Thermo Scientific™ Magnesium Stearate is a high-purity white to pale cream powder widely used as a lubricant, anti-adherent, and binder in pharmaceutical, food, and industrial formulations. It is composed primarily of stearic and palmitic acids bound to magnesium, and is valued for its hydrophobic, flow-enhancing, and compressibility-improving properties.
Magnesium stearate is particularly essential in pharmaceutical tablet and capsule manufacturing, ensuring consistent flow during powder filling and preventing ingredients from sticking to equipment surfaces. Its high thermal stability and lubricity also make it useful in polymer processing and cosmetics formulation.
Key Features & Benefits
- Pharmaceutical Grade Purity: Conforms to essential quality standards including FTIR verification.
- Versatile Excipient: Functions as a lubricant, anti-caking agent, binder, and flow promoter.
- Low Impurity Profile: Contains minimal levels of heavy metals and residual salts.
- Compatible with Various Formulations: Effective in both dry coatings and wet granulation processes.
Applications
| Application Area | Use Description |
|---|---|
| Pharmaceutical | Lubricant and anti-adherent in tablet and capsule production |
| Food Industry | Binder in hard candies and processing aid in baby formulas |
| Polymer Processing | Flow aid and thermal stabilizer in plastic compounding |
| Nutritional Supplements | Coating and filler in dietary capsules and powders |
| Cosmetics & Personal Care | Anti-caking agent in pressed powders and emulsions |
| Chemical Synthesis | Reagent and medium in hydrogenation processes |
Chemical Properties & Specifications
| Property | Specification |
|---|---|
| Appearance (Color) | White to pale cream |
| Form | Powder |
| Assay (Stearic Acid, GC) | ≥ 40.0% |
| Assay (Stearic & Palmitic Acid, GC) | ≥ 90.0% |
| Magnesium (Mg) Content | 3.8–5.0% (complexometric titration) |
| Loss on Drying (at 105 °C) | ≤ 6% |
| Chloride (Cl) | ≤ 0.1% (≤ 1000 ppm) |
| Sulfate (SO₄) | ≤ 1% |
| Lead (Pb) | ≤ 10 ppm |
| Cadmium (Cd) | ≤ 3 ppm |
| Nickel (Ni) | ≤ 5 ppm |
| Heavy Metals (as Pb) | ≤ 40 ppm |
| Identification (FTIR) | Conforms |
Storage & Handling
- Storage Conditions: Tightly closed containers at ambient temperature.
- Shelf Life: As specified on CoA; typically stable for extended periods when stored properly.
Thermo Scientific™ Magnesium Stearate offers superior performance across pharmaceutical, food, and chemical manufacturing workflows. Its high purity, excellent lubricity, and compatibility with diverse formulation techniques make it an indispensable excipient and processing aid. Designed to meet stringent regulatory and quality control requirements, it ensures both reliability and reproducibility in critical applications.
- Pack Size: 250g 1kg