Dimethyl Sulfoxide (DMSO)
(CH₃)₂SO · CAS 67-68-5
Electronic grade DMSO for OLED organic EL layer inkjet printing, perovskite solar cell precursor solvent, and organic thin-film transistor fabrication. Pharmaceutical grade for transdermal drug delivery and compound cryopreservation.
Molecular Weight
78.13 g/mol
Boiling Point
189 °C
Density
1.100 g/mL
Molecular Formula
Available Grades
Analytical Specification
Analytical Specification Table
All values represent maximum allowable limits unless noted ≥. A lot-specific Certificate of Analysis (CoA) with ICP-MS, LPC, and GC data is issued for every shipment. Full data packages available on request.
| Parameter | Test Method | Unit | G4 | G5 ★ | AR |
|---|---|---|---|---|---|
| Assay (GC) | GC-FID | % | ≥99.99 | ≥99.999 | ≥99.7 |
| Water Content (KF) | Karl Fischer | ppm | ≤50 | ≤20 | ≤1000 |
| Total Metals (ICP-MS) | ICP-MS | ppb ea. | ≤0.5 | <0.1 | — |
| Dimethyl Sulfide (DMS) | GC-FID | ppm | ≤5 | ≤2 | ≤20 |
| Dimethyl Sulfone | GC-FID | ppm | ≤50 | ≤20 | ≤200 |
| Color (APHA) | ASTM D1209 | Hazen | ≤5 | ≤5 | ≤10 |
| Peroxide (as H₂O₂) | Iodometric | ppm | ≤0.5 | ≤0.2 | ≤2 |
| Residue on Evaporation | Gravimetric | ppm | ≤5 | ≤2 | ≤10 |
★ G5 = SEMI C1 Tier D (6N grade). All metal values by ICP-MS. Particle counts by in-line LPC during ISO Class 3 fill. CoA available on request.
Grade Comparison
G1 → G5 Purity Scale
Select the grade that matches your process node and contamination budget. Every grade is available from PureTech with full lot CoA and ICP-MS data.
All grades tested by ICP-MS (28 elements), in-line LPC (ISO Class 3 fill), and Karl Fischer titration. G5 = SEMI C1 Tier D. Full CoA per lot. Request CoA template →
Application Areas
Where Dimethyl Sulfoxide Is Used
Semiconductor Process
- OLED organic light-emitting layer inkjet printing solvent
- Perovskite solar cell (PSC) precursor solution
- Organic thin-film transistor (OTFT) semiconductor layer
- Photoresist developer co-solvent (specialty resists)
Laboratory & Analytical
- Compound library solubilization (10 mM stock)
- ¹H NMR (DMSO-d₆ reference δ 2.50 ppm)
- Cell cryopreservation (10% v/v)
- Protein refolding & crystallization
Industrial & Other
- Transdermal drug delivery topical vehicle (FDA-approved)
- industrial paint stripping (low-toxicity)
- cable & wire insulation processing
Battery & Energy Storage
Packaging & Supply
Available Container Formats
Get Started
Request a Sample or
Technical Quote
Our application engineers respond with full CoA data, ICP-MS reports, and supply chain details within one business day.