For B2B partners requiring detailed technical documentation. A comprehensive, batch-specific Certificate of Analysis (COA) will be provided promptly upon request.

Parameter	Specification	Test Method
Identity
Product Name	Magnesium Stearate	-
CAS No.	557-04-0	-
E Number	E470b	-
Molecular Formula	C₃₆H₇₀MgO₄	-
Key Specifications
Purity (Calculated)	≥ 99%	Calculation
Assay (MgO)	6.8% - 8.3%	Titrimetric
Appearance	Fine, White, Fluffy Powder	Visual Inspection
Loss on Drying	≤ 5.0%	Gravimetric
Safety & Quality
Heavy Metals
- Lead (Pb)	≤ 3.0 mg/kg	ICP-MS
- Arsenic (As)	≤ 3.0 mg/kg	ICP-MS
- Cadmium (Cd)	≤ 1.0 mg/kg	ICP-MS
- Mercury (Hg)	≤ 0.1 mg/kg	ICP-MS
Total Plate Count	≤ 1000 CFU/g	USP <61>
Yeast & Mold	≤ 100 CFU/g	USP <61>
E. Coli	Negative	USP <62>
Salmonella	Negative	USP <62>
Certifications	ISO 9001, GMP (Certificates available upon request)	Audit Certification

Note: Purity is calculated based on the Assay (MgO) result and the theoretical molecular composition of Magnesium Stearate.

Note: The specifications above define our standard Magnesium Stearate product profile. We also provide customization options—such as adjustments to particle size distribution and packaging—to meet specific formulation requirements. Contact us to request the full Certificate of Analysis (COA) for detailed, batch-specific data and supporting compliance documentation.

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Magnesium Stearate Powder

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