DMSO Specifications, Grades and Supply
Compare industrial, pharmaceutical and electronic DMSO specifications, view sample COAs and select a grade for your application.
DMSO Grade Comparison at a Glance
Request a QuoteKey differences: DMSO content, moisture and metal-ion specifications. All specifications are shown below. Swipe sideways on smaller screens.
| Specification | Electronic | Pharmaceutical | Industrial |
|---|---|---|---|
| DMSO Content | ≥99.98% | ≥99.96% | ≥99.90% |
| Moisture | ≤300 ppm | ≤300 ppm | ≤1000 ppm |
| Acid Value | ≤0.01 mgKOH/g | ≤0.02 mgKOH/g | ≤0.03 mgKOH/g |
| Crystallizing Point | ≥18.3°C | ≥18.3°C | ≥18.1°C |
| Transmittance (400nm) | ≥99.0% | ≥99.0% | ≥98.0% |
| UV Absorbance (275nm) | — | ≤0.30 | — |
| UV Ratio (285/275nm) | — | ≤0.65 | — |
| UV Ratio (295/275nm) | — | ≤0.45 | — |
| Non-volatile Residue | — | ≤0.01% | — |
| Refractive Index (nD 20°C) | 1.4778–1.4800 | 1.4778–1.4800 | 1.4775–1.4800 |
| Color (APHA) | ≤10 | ≤10 | ≤10 |
| Density | 1.0940–1.1030 g/cm³ | 1.0940–1.1030 g/cm³ | 1.0930–1.1030 g/cm³ |
| Conductivity | ≤0.30 μS/cm | — | — |
| Metal Ions | ≤10 ppb (Na, Mg, Al, K, Ca, Cr, Mn, Fe, Ni, Cu, Zn, Pb) | — | — |
| Appearance | Colorless transparent liquid or crystal | Colorless transparent liquid or crystal | Colorless transparent liquid or crystal |
| Odor | Odorless or slight odor | Odorless or slight odor | Odorless or slight odor |
| Explore each grade | View Electronic Grade | View Pharmaceutical Grade | View Industrial Grade |
— = specification not listed; it does not mean zero or absence. Confirm the agreed specification and batch COA with your quotation.
COA downloads & specification notes
Listed supplier specifications; sample COAs show individual batch results. Grade names alone do not establish pharmacopeial or semiconductor-process qualification.
What Is DMSO?
Dimethyl sulfoxide (DMSO, CAS 67-68-5) is a polar aprotic solvent used in industrial processing, chemical synthesis and selected pharmaceutical and electronics-related applications.
YUJI is a China-based DMSO supplier helping international buyers match specifications, batch documentation and packaging to their requirements. Use the comparison below or read our DMSO grade selection guide before requesting a quote.
DMSO Properties
| Property | Description |
|---|---|
| Chemical formula | C2H6OS |
| Molecular weight | 78.13 g/mol |
| CAS Number | 67-68-5 |
| EINECS Number | 200-664-3 |
| Melting Point | 18.55 °C |
| Boiling Point | 189 °C |
| Solubility in Water | Miscible with water |
| Density | 1.1 g/cm³ |
| Appearance | Colorless liquid or crystals, depending on temperature |
| Flash Point (closed cup) | 87 °C (ILO/WHO ICSC 0459); consult the supplied SDS and test method |
Physical-property reference: ILO/WHO ICSC 0459. Values depend on measurement conditions.
Choose DMSO by Application
Industrial Grade
Pharmaceutical Grade
AI-generated application illustrations. Confirm grade suitability against the agreed specification and batch COA.
Further reading: DMSO Physical Properties for Process Planning.
DMSO Sourcing Questions
What is DMSO?
Dimethyl sulfoxide (DMSO), CAS 67-68-5, is a polar aprotic solvent used in chemical synthesis and selected industrial, pharmaceutical and electronic processes.
Which DMSO grades does YUJI offer?
YUJI lists industrial, pharmaceutical and electronic grades with minimum DMSO contents of 99.90%, 99.96% and 99.98%, respectively. Compare the full specifications, including moisture, UV characteristics, conductivity and listed metal ions, before selecting a grade.
Can I request a sample or Certificate of Analysis?
Yes. Contact YUJI with your application and required parameters to request a sample, current specification or representative COA. Confirm the batch COA and agreed specification before ordering.
What DMSO packaging is available?
Listed options are 25 kg HDPE drums, 225 kg HDPE drums, IBC tanks and sample bottles; IBC net fill is confirmed with the quotation. Packaging, minimum order quantity and lead time are confirmed with each quotation.
What information is needed for a DMSO quote?
Provide your intended application, required specification, quantity, packaging and delivery destination. YUJI reviews these requirements and matches a suitable manufacturing source in China.