Safety data sheet for Dimethyl sulfoxide
CAS 67-68-5
This is the free preview of a draft SDS for Dimethyl sulfoxide — Sections 1, 2 and 9, generated from the sources named below. The full 16-section draft, with your own company in Section 1, is $5 per document.
Typically documented by: Laboratory solvent, formulation carrier.
Draft safety data sheet — preview
Sections 1, 2, 9 of 16
- CAS number
- 67-68-5
- Molecular formula
- C2H6OS
- Molecular weight
- 78.14 g/mol
- Signal word
- None required — not classified
Section 1 — Identification
1.1 Product identifier
Product identifier: Dimethyl Sulfoxide
Chemical name (IUPAC): methylsulfinylmethane
CAS number: 67-68-5
PubChem CID reference: 679
Synonyms: dimethyl sulfoxide; DMSO; Methylsulfinylmethane; Methyl sulfoxide; Dimethyl sulphoxide; Dimethylsulfoxide; sulfinylbismethane; Demasorb; Domoso; Methane, sulfinylbis-
Section 2 — Hazards Identification
2.1 Classification of the substance or mixture
Classification basis: OSHA 29 CFR 1910.1200 Appendix A, aligned to the GHS Rev. 7 hazard classes.
Classification: Not classified. This substance meets no hazard class criteria of OSHA 29 CFR 1910.1200 Appendix A on the data reviewed.
2.2 Label elements
Signal word: None required
GHS pictograms: None
Section 9 — Physical and Chemical Properties
9.1 Information on basic physical and chemical properties
Physical form: Liquid
Appearance: Colorless liquid
Odor: Slightly sulfurous odor
Boiling point: 190°C (374°F) at 1013 hPa
Melting point: 18.4°C (65°F)
Flash point: 87°C (189°F) closed cup
Density: 1.100 at 20 °C/4 °C
Vapor pressure: 0.6 hPa at 20°C
Water solubility: Miscible
Log Pow (log Kow): -1.35
Vapor density: 2.71 (air = 1)
Auto-ignition temperature: 215°C (419°F)
Viscosity: 2.47 cP at 20°C
Not found in the public records searched: lower explosive limit, upper explosive limit and pH. Enter these from your supplier's safety data sheet or your own test report before the draft is issued.
Where each value came from
- Odor — Hazardous Substances Data Bank (HSDB)
- Lefaux, R. Practical Toxicology of Plastics. Cleveland: CRC Press Inc., 1968, p. 120
- View the record
- Melting point — Hazardous Substances Data Bank (HSDB)
- O'Neil, M.J. (ed.). The Merck Index - An Encyclopedia of Chemicals, Drugs, and Biologicals. Cambridge, UK: Royal Society of Chemistry, 2013, p. 593
- View the record
- Density — Hazardous Substances Data Bank (HSDB)
- Same reference as melting point above.
- View the record
- Water solubility — Hazardous Substances Data Bank (HSDB)
- Dorigan J et al; Preliminary scoring of selected organic air pollutants. Appendix II-Chemistry, production, and toxicity of chemicals D through E. Research Triangle Park, NC: US EPA, USEPA-450/3-77-008C. pp.327 (1976)
- View the record
- Log Pow (log Kow) — Hazardous Substances Data Bank (HSDB)
- Hansch, C., Leo, A., D. Hoekman. Exploring QSAR - Hydrophobic, Electronic, and Steric Constants. Washington, DC: American Chemical Society., 1995, p. 5
- View the record
- Vapor density — Hazardous Substances Data Bank (HSDB)
- Verschueren, K. Handbook of Environmental Data on Organic Chemicals. Volumes 1-2. 4th ed. John Wiley & Sons. New York, NY. 2001, p. 541
- View the record
- Auto-ignition temperature — Hazardous Substances Data Bank (HSDB)
- National Fire Protection Association; Fire Protection Guide to Hazardous Materials. 14th Edition, Quincy, MA 2010, p. 325-52
- View the record
- Viscosity — Hazardous Substances Data Bank (HSDB)
- Same reference as melting point above.
- View the record
A value with no row here was assembled from more than one record, so no single record is credited for it. The draft you buy carries this table as an appendix covering all 16 sections.
Sources
- ECHA C&L Inventory — harmonised CLP entry
- Hazardous Substances Data Bank (HSDB)
- PubChem — GHS classification
- PubChem — compound record
- PubChem — names and identifiers
- PubChem — regulatory information
- PubChem — toxicity data
- PubChem — transport information
Sections 1.3 and 1.4 are withheld here because the supplier and emergency contact blocks carry your own company details in the draft you buy. Every draft needs review by a competent person before it is issued.
Measured values for Dimethyl sulfoxide, and where each one comes from
20 measured values for 11 properties, read from 2 public databases. On 2 properties the records differ. Each reading is shown with its own record. Follow any record to read the value at its source.
Boiling point
2 records agree
Used with vapour pressure to judge how readily the substance reaches the air you breathe.
- 189 °C @760 [mm Hg]
- PAC Chemical Database, U.S. Department of Energy
Melting point
2 records agree
Fixes the physical state at handling temperature, which the label and the transport class depend on.
Flash point
1 record
The lowest temperature at which the liquid gives off enough vapour to ignite. It decides the GHS flammable liquid category.
- 95 °C (203 °F) (Open cup)
- Hazardous Substances Data Bank (HSDB)
Auto-ignition temperature
1 record
The temperature at which the substance ignites with no spark or flame. It sets safe surface and process temperatures.
- 419 °F (215 °C)
- Hazardous Substances Data Bank (HSDB)
Vapour pressure
3 records differ
The higher it is, the faster the substance evaporates into the workplace air at room temperature.
- VP: 0.42 mm at 20 °C
- Hazardous Substances Data Bank (HSDB)
- 0.60 mm Hg at 25 °C
- Hazardous Substances Data Bank (HSDB)
- 0.75 [mm Hg] @27.4 °C
- PAC Chemical Database, U.S. Department of Energy
Vapour density
1 record
Above 1 the vapour sinks and collects in pits, sumps and low enclosed spaces.
- 2.71 (Air = 1)
- Hazardous Substances Data Bank (HSDB)
Density
2 records differ
Needed to convert between mass and volume on the label, in transport papers and in a spill estimate.
- 1.100 at 20 °C/4 °C
- Hazardous Substances Data Bank (HSDB)
- 1.101 @25 °C
- PAC Chemical Database, U.S. Department of Energy
Solubility
4 records, each a different case
Determines spill behaviour, the right extinguishing media and the correct first-aid rinse.
- Soluble in water
- Hazardous Substances Data Bank (HSDB)
- Miscible with water
- Hazardous Substances Data Bank (HSDB)
- Soluble in ethanol, acetone, ether, carbon tetrachloride, ethyl acetate
- Hazardous Substances Data Bank (HSDB)
- Soluble in chloroform and benzene
- Hazardous Substances Data Bank (HSDB)
Partition coefficient (log Kow)
1 record
Indicates whether the substance accumulates in fat or in water, which drives the environmental sections.
- log Kow = -1.35
- Hazardous Substances Data Bank (HSDB)
Viscosity
1 record
Governs how far a spill spreads and how fast it soaks into a surface or a sorbent.
- 2.47cP at 20 °C
- Hazardous Substances Data Bank (HSDB)
Odour
2 records, each a different case
Odour is a warning property only. Many substances are hazardous well below the concentration you can smell.
- Slightly sulfurous odor
- Hazardous Substances Data Bank (HSDB)
- Distinctive garlic or oyster-like odor
- Hazardous Substances Data Bank (HSDB)
These are the public records read for Dimethyl sulfoxide, published here unchanged. Where two records disagree, the draft you buy states the value and names the record behind it, so a reviewer can see what was chosen. Every draft needs review by a competent person before it is issued.
Get the full draft SDS for Dimethyl sulfoxide
The draft covers all 16 sections under OSHA 29 CFR 1910.1200 and GHS Rev. 7, or the CLP EC 1272/2008 layout for the EU. Each draft arrives as an editable .docx and a PDF with an appendix naming the source of each value, in about 60 seconds. $5 per document, no account.