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Sulfur and phosphorus compounds

Diethyl sulfoxide

Also known as Diethylsulfoxide, (ethylsulfinyl)ethane, Ethyl sulfoxide

CAS 70-29-1Formula C4H10OSMolar mass 106.19 g/molEC 200-732-2
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Diethyl sulfoxide chemical structure, C4H10OS, CAS 70-29-1
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
70-29-1
Formula
C4H10OS
Molar mass
106.19 g/mol
EC number
200-732-2
HS code
293090
Category
Sulfur and phosphorus compounds

What is Diethyl sulfoxide?

Plain description, key identifiers and synonyms

Diethyl sulfoxide is a chemical substance with the molecular formula C4H10OS and a molar mass of 106.19 g/mol. Its CAS registry number is 70-29-1. The IUPAC name is 1-ethylsulfinylethane.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
1-ethylsulfinylethane
CAS number
70-29-1 CAS number cross-checked
EC number
200-732-2
Molecular formula
C4H10OS
UNII
030Z61382M
MDL number
MFCD01746459
InChIKey
CCAFPWNGIUBUSD-UHFFFAOYSA-N
InChI
InChI=1S/C4H10OS/c1-3-6(5)4-2/h3-4H2,1-2H3
SMILES (canonical and isomeric)
CCS(=O)CC

Synonyms

  • Diethylsulfoxide
  • (ethylsulfinyl)ethane
  • Ethyl sulfoxide
  • Ethane, 1,1'-sulfinylbis-
  • 1-ethylsulfinylethane
  • Diethyl sulphoxide
  • Ethane,1,1'-sulfinylbis-
  • (ethanesulfinyl)ethane
  • 1,1'-Sulfinylbis(ethane)
  • Diaethylsulfoxid
  • 1,1'-Sulphinylbisethane
  • 1,1'-Sulfinylbis[ethane]
  • ethylsulfinylethane
  • Ethanesulfinyl-ethane
  • 1-(ethylsulfinyl)ethane
  • Ethane,1'-sulfinylbis-

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
106.19 g/molcalc.
Exact mass
106.0452 Dacalc.
LogP (octanol/water)
0.77calc.
Topological polar surface area
17.07 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
1calc.
Rotatable bonds
2calc.
Heavy atoms
6calc.
Rings
0calc.
Aromatic rings
0calc.
Fraction sp3 carbons
1calc.
Formal charge
0calc.
Stereocentres
0calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Safety and hazards

GHS classification summary, not a safety data sheet

No GHS hazard classification is recorded for this substance yet. That does not mean it is harmless.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Diethyl sulfoxide suppliers

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Diethyl sulfoxide price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Regulatory status

Inventories, regulations and trade controls that list this substance

No regulatory list memberships are recorded for this substance yet. Always check the rules of the importing and exporting country before trade.

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Diethyl sulfoxide is traded under.

HS 2930.90Indicative HS code

Organo-sulphur compounds, other

World exports in 2024
$5.83B
+0.1% vs 2023, imports $5.93B
2019 to 2024
Top exporters
  1. China40.7%
  2. United States10.9%
  3. Japan9.3%
Top importers
  1. United States13.3%
  2. Brazil12.6%
  3. China6.6%
Reported customs values in USD, not prices.Full trade data

The HS code shown for Diethyl sulfoxide is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Diethyl sulfoxide, based on the data on this page

What is Diethyl sulfoxide?

Diethyl sulfoxide is a chemical substance with the molecular formula C4H10OS and a molar mass of 106.19 g/mol. Its CAS registry number is 70-29-1. The IUPAC name is 1-ethylsulfinylethane.

What is the CAS number of Diethyl sulfoxide?

The CAS registry number of Diethyl sulfoxide is 70-29-1.

What is the molecular formula and weight of Diethyl sulfoxide?

The molecular formula of Diethyl sulfoxide is C4H10OS and its molar mass is 106.19 g/mol.

What is Diethyl sulfoxide used for?

Known uses and roles of Diethyl sulfoxide include building blocks in research and laboratory.

Is Diethyl sulfoxide hazardous?

No GHS hazard classification for Diethyl sulfoxide is recorded on CompoundList yet. That does not prove it is safe. Always read the supplier safety data sheet.

What is the HS code of Diethyl sulfoxide?

Diethyl sulfoxide is usually classified under HS code 293090 (Organo-sulphur compounds, other). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Diethyl sulfoxide?

Post a free request on CompoundList and suppliers of Diethyl sulfoxide will send you quotes. Your contact details stay private until you accept a quote.

What is the price of Diethyl sulfoxide?

Suppliers quote Diethyl sulfoxide on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Diethyl sulfoxide

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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