Zhuzhou Hansen Chemicals Co., Ltd, a leading manufacturer of high-purity Methyl Sulfonyl Methane (MSM, C₂H₆O₂S, CAS 67-71-0), guarantees every batch meets international standards through USP assay methods. MSM is widely used in dietary supplements, pharmaceuticals, cosmetics, animal feed, agriculture, and industrial applications.

Following USP guidelines, MSM is tested using gas chromatography with flame ionization detection. Purity ranges from 98.0%–102.0% (anhydrous) with chromatographic purity ≥99.8%. Single impurities, including residual DMSO, are ≤0.1%, total impurities ≤0.2%. Additional checks include melting point (108.5°–110.5°C), microbial limits (≤10 cfu/g), and moisture ≤0.1%.

With over 20 years of experience, Zhuzhou Hansen Chemicals provides COA, MSDS, and complete export/import documentation, along with professional logistics and after-sales support. Clients include distributors, contract manufacturers, supplement and cosmetic companies, and research labs.

USP Specification Snapshot:

• Purity: 98.0%–102.0%
• Chromatographic purity: ≥99.8%
• Single impurity: ≤0.1%
• Total impurities: ≤0.2%
• Melting point: 108.5°–110.5°C
• Microbial limits: ≤10 cfu/g
• Moisture: ≤0.1%

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