Dimethyl sulfoxide

Description

methylsulfinylmethane is identified by CAS 67-68-5, molecular formula C2H6OS and molecular weight 78.01 g/mol. UNII YOW8V9698H; ChEBI 28262; InChIKey IAZDPXIOMUYVGZ-UHFFFAOYSA-N. Boiling Point: 372 °F at 760 mmHg (NTP, 1992); Boiling Point: 63; Boiling Point: 189 °C.

Identification

CAS Registry Number	67-68-5
PubChem CID	679
Molecular formula	C2H6OS
Molecular weight	78.01 g/mol
IUPAC name	methylsulfinylmethane
InChIKey	IAZDPXIOMUYVGZ-UHFFFAOYSA-N
UNII (FDA)	YOW8V9698H
ChEBI ID	CHEBI:28262
ATC code (WHO)	G04BX13
FEMA number	3875
JECFA number	507

Computed Descriptors

Molecular Weight	78.14
XLogP3	-0.6
Hydrogen Bond Donor Count	0
Hydrogen Bond Acceptor Count	2
Rotatable Bond Count	0
Exact Mass	78.01393598
Monoisotopic Mass	78.01393598
Topological Polar Surface Area	36.3
Heavy Atom Count	4
Formal Charge	0

Physical & Chemical Properties

Boiling Point	372 °F at 760 mmHg (NTP, 1992)
Boiling Point	63
Boiling Point	189 °C
Boiling Point	189.00 to 190.00 °C. @ 760.00 mm Hg
Boiling Point	189 °C @760 [mm Hg]
Melting Point	65.3 °F (NTP, 1992)
Melting Point	18.5
Melting Point	18.45 °C
Melting Point	18.5 °C
Melting Point	17.89 °C

Physical description & handling notes

• Dimethyl sulfoxide appears as a clear liquid, essentially odorless. Closed cup flash point 192 °F. Vapors are heavier than air. Contact with the skin may cause stinging and burning and lead to an odor of garlic on the breath. An excellent solvent that can transport toxic solutes through the skin. High vapor concentrations may cause headache, dizziness, and sedation.
• Liquid
• Colorless liquid that is odorless or has a slight odor of sulfur, garlic, or oysters; [CHEMINFO]
• COLOURLESS HYGROSCOPIC LIQUID.
• colourless liquid with mild cabbage or garlic odour
• Colorless liquid

Regulatory Status

Regulatory & Food Contact	EU Flavoring substances FDA Substance added to food: FLAVORING AGENT OR ADJUVANT FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS Flavoring Agents FLAVOURING_AGENT: Flavouring Agent Garlic
GHS notification summary	65.1% (611 / 938)

GHS Hazard Classification

GHS notification summary	65.1% (611 / 938)
Reported hazard statements	H315 (28.4%), H319 (33.6%), H335 (13.8%), H227, H371

Documented Uses

• Used as a pharmaceutical, a solvent for polymerization and chemical extractions, a paint remover, a preservative for organ transplantation; Occurs naturally in ground water and in grains, vegetables, and many other foods; [CHEMINFO] Used as a solvent for many organic compounds; Also used in industrial cleaners; [HSDB]
• Semiconductor Manufacturing [Category: Industry]
• DMSO is not a nutritional supplement. It is used as a treatment for interstitial cystitis, and treatment must be performed by a qualified physician. DMSO is metabolized to methylsulfonylmethane, which is available as a nutritional supplement.
• Vitrification has become common for cryopreservation of embryos. ...Extended exposure of embryos with both vitrification protocols showed that the DMSO-containing vitrification solutions did not lead to cell membrane damage and death as quickly as the DMSO-free vitrification solutions. To assess embryo viability, the authors recommend that vitrification of early embryos should be combined with extended culture and assessment of normal blastocyst development before transferring to patients.
• For more Uses (Complete) data for DIMETHYL SULFOXIDE (13 total), please visit the HSDB record page.
• Use (kg; approx.) in Germany (2009): >10000

Synonyms

dimethyl sulfoxide; 67-68-5; DMSO; Methylsulfinylmethane; Methyl sulfoxide; Dimethyl sulphoxide; Dimethylsulfoxide; sulfinylbismethane; Demasorb; Domoso; Methane, sulfinylbis-; Demsodrox; Dromisol; Deltan; Demavet; Demeso

Frequently Asked Questions

What are the CAS number and molecular formula of methylsulfinylmethane?

CAS 67-68-5; molecular formula C2H6OS; molecular weight 78.01 g/mol.

What other names is methylsulfinylmethane known by?

dimethyl sulfoxide, 67-68-5, DMSO, Methylsulfinylmethane, Methyl sulfoxide, Dimethyl sulphoxide.

What is the regulatory status of methylsulfinylmethane?

Documented regulatory listings: EU Flavoring substances; FDA Substance added to food: FLAVORING AGENT OR ADJUVANT; FDA Inventory of Food Contact Substances Listed in 21 CFR: FCS.

Is methylsulfinylmethane classified as hazardous?

65.1% of GHS notifications report no hazard classification (611 of 938).

What are the key physical properties of methylsulfinylmethane?

Boiling Point: 372 °F at 760 mmHg (NTP, 1992); Boiling Point: 63; Boiling Point: 189 °C; Boiling Point: 189.00 to 190.00 °C. @ 760.00 mm Hg.

Facts on this page are taken from PubChem (US National Library of Medicine) and Wikidata. Grade-specific data — assay, moisture, particle size, packaging, shelf life — is issued per batch on the COA and is not published here.