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Solvents and alcohols

DMSO vs DMF

DMSO (C2H6OS, CAS 67-68-5) and DMF (C3H7NO, CAS 68-12-2) are both listed under polar aprotic solvents.

DMSO has a molar mass of 78.14 g/mol, DMF 73.10 g/mol.

Measured boiling points are 189 °C for DMSO and 152.8 °C for DMF.

DMSO carries the GHS signal word Warning, DMF Danger.

On CompoundList, 327 suppliers list DMSO and 400 suppliers list DMF.

Data last updated 7 October 2026

DMSO and DMF compared side by side
Dimethyl sulfoxide chemical structure, C2H6OS, CAS 67-68-5
DMSO
Dimethylformamide chemical structure, C3H7NO, CAS 68-12-2
DMF
Identity
Name in our databaseDimethyl sulfoxideDimethylformamide
CAS number67-68-568-12-2
Molecular formulaC2H6OSC3H7NO
Molar mass78.14 g/mol73.10 g/mol
IUPAC namemethylsulfinylmethaneN,N-dimethylformamide
EC number200-664-3200-679-5
Physical properties
AppearanceColorless liquidColorless to very slightly yellow liquid
Melting point18.4 °C-60.3 °C
Boiling point189 °C152.8 °C
DensityRelative density (water = 1): 1.1Relative density (water = 1): 0.95
Flash point95 °C67 °C
SolubilitySoluble in waterMiscible with water and most common organic solvents
LogP (octanol/water)Computed from the structure-0.01-0.3
Safety (GHS)
Signal wordWarningDanger
Pictograms
GHS07: Harmful or irritant
GHS07: Harmful or irritant
GHS08: Serious health hazard
Hazard statements
  • H315 Causes skin irritation.
  • H319 Causes serious eye irritation.
  • H335 May cause respiratory irritation.
  • H312 Harmful in contact with skin.
  • H319 Causes serious eye irritation.
  • H332 Harmful if inhaled.
  • H360D May damage the unborn child.
UN numberUN 2811UN 2265
Uses and classification
Uses and functions
  • Analgesics and antipyretics
  • Solvents
  • Laboratory solvents
  • Escherichia coli metabolite
  • MRI contrast agent
  • Aetiopathogenetic role
  • Solvents
  • Laboratory solvents
  • Aetiopathogenetic role
  • Aprotic solvent
  • Geroprotector
  • Hepatotoxic agent
CategoryPetrochemicals and solvents › Polar aprotic solventsPetrochemicals and solvents › Polar aprotic solvents
HS code293090Organo-sulphur compounds, other292419Acyclic amides (including acyclic carbamates) and their derivatives, salts thereof, other
Market on CompoundList
Suppliers327 suppliers400 suppliers
Supplier countries37 countries, most in China, India, United States42 countries, most in India, China, United States
Price rangeOnly prices set by suppliers who manage their own profilePrice on requestPrice on request

Measured and computed values as shown on each chemical page, plus live listings on CompoundList. Details may have changed, please confirm them with the supplier. Safety data is a summary, not an SDS.

DMSO
DMF

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