Product Description
Dimethyl Sulfoxide (DMSO) is a sulfur-containing organic compound with the chemical formula C₂H₆OS. It is a polar aprotic solvent known for its strong solvating ability and miscibility with water and many organic solvents. DMSO is widely used in chemical laboratories, industrial synthesis, and selected pharmaceutical and biotechnology research applications.
CAS Number: 67-68-5
Molecular Formula: C₂H₆OS
Molecular Weight: 78.13 g/mol
Appearance: Colorless, clear liquid
Odor: Mild characteristic odor
Solubility: Miscible with water and many organic solvents
Product Grades: Industrial, laboratory, or other specified grades, subject to supplier availability.
Chemical Properties
Melting point | 18.4 °C |
Boiling point | 189 °C(lit.) |
density | 1.100 g/mL at 20 °C |
vapor density | 2.7 (vs air) |
vapor pressure | 0.42 mm Hg ( 20 °C) |
refractive index | n20/D 1.479(lit.) |
FEMA | |
Fp | 192 °F |
storage temp. | Store at +5°C to +30°C. |
solubility | H2O: miscible (completely) |
pka | 35(at 25℃) |
form | liquid (temperature dependent) |
color | clear colorless |
Relative polarity | 0.444 |
Odor | Mild garlic odor |
Odor Type | alliaceous |
explosive limit | 1.8-63.0%(V) |
Water Solubility | Soluble in water, methanol, acetone, ether, benzene, chloroform. |
FreezingPoint | 18.4℃ |
Sensitive | Hygroscopic |
λmax | λ: 285 nm Amax: ≤0.20 |
JECFA Number | 507 |
Merck | 14,3259 |
BRN | 506008 |
Dielectric constant | 41.9（55℃） |
Stability: | Stable. Incompatible with a very wide range of materials, including acid chlorides, strong acids, strong oxidizing agents, strong reducing agents, phosphorus halides, moisture, copper wool + trichloroacetic acid. Reacts violently with a number of materials - consult a full data sheet before use. Hygroscopic. |
InChIKey | IAZDPXIOMUYVGZ-UHFFFAOYSA-N |
LogP | -1.35 |
CAS DataBase Reference | 67-68-5(CAS DataBase Reference) |
NIST Chemistry Reference | Dimethyl sulfoxide(67-68-5) |
EPA Substance Registry System | Dimethyl sulfoxide (67-68-5) |
Safety Information
Hazard Codes | Xi |
Risk Statements | 36/37/38 |
Safety Statements | 24/25-37/39-26-36-23 |
RIDADR | NA 1993 / PGIII |
WGK Germany | 1 |
RTECS | PV6210000 |
F | 3 |
Autoignition Temperature | 215 °C |
TSCA | Yes |
HS Code | 29309070 |
Hazardous Substances Data | 67-68-5(Hazardous Substances Data) |
Toxicity | LD50 orally in rats: 17.9 ml/kg (Bartsch) |
Main Applications
Chemical Synthesis: Used as a solvent or reaction medium in various organic chemical reactions.
Pharmaceutical Research: Used in laboratory research and formulation development, subject to the required grade and applicable regulations.
Biotechnology Research: Used in certain laboratory protocols, including cryopreservation procedures.
Industrial Processing: Applied in selected extraction, separation, and specialty chemical processes.
Materials Science: Used as a solvent in research involving polymers and other functional materials.
