Dimethyl Sulfoxide (DMSO, CAS 67-68-5)
China manufacturer & supplier of high-purity DMSO - industrial, pharmaceutical / USP, and electronic grades for bulk purchase, shipped to 50+ countries.
Product Snapshot
| Product Name | Dimethyl Sulfoxide (DMSO) |
| CAS Number | 67-68-5 |
| EC / EINECS | 200-664-3 |
| Molecular Formula | C₂H₆OS / (CH₃)₂SO |
| Molecular Weight | 78.13 g/mol |
| Grades Available | Industrial · Pharmaceutical/USP · Electronic |
| Packaging | 225 kg drum · 1000 kg IBC · ISO tank |
| Origin | China (export to 50+ countries) |
Dimethyl Sulfoxide: A Premium Polar Aprotic Solvent
Dimethyl Sulfoxide (DMSO) is a colorless, viscous polar aprotic solvent with high thermal stability, low toxicity, and strong permeability. Often called the "universal solvent," it dissolves most organic compounds, many inorganic salts, and a wide range of polymers, and is miscible with water in all proportions. As a China-based supplier working with leading manufacturers, Sinolook provides high-quality DMSO at a competitive factory dimethyl sulfoxide price, in flexible volumes from laboratory samples to full ISO-tank loads.
DMSO is a core raw material across pharmaceuticals, electronics, agrochemicals, and chemical synthesis. New to DMSO or comparing it to other solvents? Our knowledge hub explains the full picture - start with 12 industrial applications of DMSO and DMSO grades explained.
DMSO Specifications by Grade
The grade you choose determines purity, impurity limits, and the right application. All grades comply with international standards including USP, EP, and REACH. (For help matching grade to use, see our guide on choosing the right DMSO grade.)
| Specification | Industrial Grade | Pharmaceutical Grade | Electronic Grade |
|---|---|---|---|
| Appearance | Colorless viscous liquid | Colorless viscous liquid | Ultra-pure colorless liquid |
| Content (Purity) | ≥99.0% | ≥99.9% | ≥99.99% |
| Water Content | ≤0.2% | ≤0.05% | ≤0.01% |
| Color (Pt-Co / APHA) | ≤20 | ≤10 | ≤5 |
| Melting Point | 18.45°C | 18.45°C | 18.45°C |
| Boiling Point | 189°C | 189°C | 189°C |
| Flash Point (Closed Cup) | 95°C | 95°C | 95°C |
| Metal Impurities | Not specified | Single ion ≤10 ppm | Single ion ≤1 ppb |
| Storage Stability | 12 months (sealed) | 18 months (N₂-sealed) | 24 months (N₂-sealed) |
| Packaging | 225 kg steel drum, 1000 kg IBC | 200 kg HDPE drum | 180 kg glass-lined drum |
Every shipment ships with a batch-specific Certificate of Analysis (COA). Need the full SDS and handling data? See our DMSO Safety Data Sheet & PPE guide.
Key Applications
Why Buy DMSO from Sinolook
Storage & Handling - Quick Notes
Store DMSO in a cool (5–25°C), dry, ventilated area away from oxidizers, acids, and heat. DMSO is hygroscopic and freezes at 18.45°C (re-liquefies cleanly on gentle warming). Because it penetrates skin readily, handle with butyl-rubber gloves and goggles. For the complete warehouse SOP, container compatibility, and re-liquefying procedure, see our DMSO storage & handling guide and DMSO safety & toxicity overview.
Frequently Asked Questions
The CAS number of dimethyl sulfoxide (DMSO) is 67-68-5, with EC number 200-664-3 and molecular formula C₂H₆OS.
We supply industrial grade (≥99.0%), pharmaceutical/USP grade (≥99.9%), and electronic grade (≥99.99%), each with a batch-specific COA. See our grade comparison guide to match the right one to your application.
DMSO is packed in 225 kg steel drums, 1000 kg IBCs, and ISO tanks. Trial samples are available; bulk orders qualify for volume discounts. Contact us for the current MOQ and a quotation for your destination.
No - DMSO is not regulated as Dangerous Goods (flash point 95°C, above the UN Class 3 threshold). It ships as ordinary cargo, lowering freight cost. See our HS code & import/export guide.
Send us your required grade, volume, packaging, and destination via the contact details below, and we'll provide a firm dimethyl sulfoxide price quotation with lead time. Market context is available in our global DMSO market 2026 report.
📚 DMSO Knowledge Hub
Learn more about dimethyl sulfoxide before you buy:
Buy Dimethyl Sulfoxide (DMSO) Direct from China
Tell us your grade, volume, packaging, and destination - we'll send a firm quotation with lead time. Industrial, pharmaceutical/USP, and electronic grades, with batch COA, shipped to 50+ countries.
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