Safety data sheet for Methyl ethyl ketone
CAS 78-93-3
This is the free preview of a draft SDS for Methyl ethyl ketone — 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: Coatings, printing inks, cleaning.
Draft safety data sheet — preview
Sections 1, 2, 9 of 16
- CAS number
- 78-93-3
- Molecular formula
- C4H8O
- Molecular weight
- 72.11 g/mol
- Signal word
- Danger
Hazard classification
- GHS02 — Flammable
- GHS07 — Health hazard — irritant
- H225: Highly Flammable liquid and vapor.
- H319: Causes serious eye irritation.
- H336: May cause drowsiness or dizziness.
Section 1 — Identification
1.1 Product identifier
Product identifier: Methyl Ethyl Ketone
Chemical name (IUPAC): butan-2-one
CAS number: 78-93-3
PubChem CID reference: 6569
Synonyms: 2-Butanone; METHYL ETHYL KETONE; Butan-2-one; Butanone; Ethyl methyl ketone; Methylethyl ketone; Meetco; Methyl acetone; Methylethylketone; 3-Butanone
1.2 Relevant identified uses of the substance or mixture and uses advised against
Relevant identified uses: Laboratory reagent, industrial processing aid, formulation component, and internal product-stewardship review subject to supplier confirmation.
Uses advised against: Consumer, medical, food, or any other use not covered by the supplier's label, technical instructions, or exposure scenario.
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: Flammable Liquid, Category 2 (Flam. Liq. 2) [H225]
Classification: Eye Irritation, Category 2 (Eye Irrit. 2) [H319]
Classification: Specific Target Organ Toxicity, Single Exposure, Category 3 (STOT SE 3) [H336]
2.2 Label elements
Signal word: Danger
GHS pictograms: GHS02 (Flammable), GHS07 (Exclamation)
Hazard statement: H225: Highly Flammable liquid and vapor.
Hazard statement: H319: Causes serious eye irritation.
Hazard statement: H336: May cause drowsiness or dizziness.
Precautionary statement: P210: Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
Precautionary statement: P264+P265: Wash hands thoroughly after handling. Do not touch eyes.
Precautionary statement: P280: Wear protective gloves, protective clothing, eye protection, face protection, and hearing protection.
Precautionary statement: P303+P361+P353: IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water or shower.
Precautionary statement: P305+P351+P338: IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses if present and easy to do - continue rinsing.
Precautionary statement: P304+P340: IF INHALED: Remove person to fresh air and keep comfortable for breathing.
Section 9 — Physical and Chemical Properties
9.1 Information on basic physical and chemical properties
Physical form: Liquid
Appearance: Colorless liquid
Odor: Acetone-like odor
Boiling point: 80°C (176°F) at 1013 hPa
Melting point: -86.7°C (-124°F)
Flash point: -9°C (16°F) closed cup
Density: 0.805 at 20 °C/4 °C; 0.7997 at 25 °C/4 °C; 0.8255 at 0 °C/4 °C
Vapor pressure: 103 hPa at 20°C
Water solubility: Miscible
Log Pow (log Kow): 0.29
Vapor density: 2.42 (air = 1)
Lower explosive limit: Not available
Upper explosive limit: Not available
Auto-ignition temperature: 505°C (941°F)
Viscosity: 0.4 cP at 25°C
pH: Not available
9.2 Other information
Other information: Additional classification-supporting physical hazard data should be confirmed from the customer-specific product specification where required.
Sources
- ECHA C&L Inventory — harmonised CLP entry
- 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 Methyl ethyl ketone, and where each one comes from
35 measured values for 12 properties, read from 4 public databases. On 5 properties the records differ. Each reading is shown with its own record. Follow any record to read the value at its source.
Boiling point
4 records, 79 to 80 °C
Used with vapour pressure to judge how readily the substance reaches the air you breathe.
- 175 °F
- NIOSH Pocket Guide
- 79.59 °C @760 [mm Hg]
- PAC Chemical Database, U.S. Department of Energy
Melting point
4 records, -87 to -86 °C
Fixes the physical state at handling temperature, which the label and the transport class depend on.
- -123 °F
- NIOSH Pocket Guide
Flash point
3 records agree
The lowest temperature at which the liquid gives off enough vapour to ignite. It decides the GHS flammable liquid category.
- 16 °F (-9 °C) (Closed cup)
- Hazardous Substances Data Bank (HSDB)
- 16 °F
- NIOSH Pocket Guide
Auto-ignition temperature
1 record
The temperature at which the substance ignites with no spark or flame. It sets safe surface and process temperatures.
Explosive limits
1 record
The vapour concentration range in air that will burn. Below the lower limit and above the upper limit it will not.
- LEL = 1.4% at 93 °C; UEL = 11.4% at 93 °C
- Hazardous Substances Data Bank (HSDB)
Vapour pressure
4 records differ
The higher it is, the faster the substance evaporates into the workplace air at room temperature.
- 90.6 mm Hg at 25 °C
- Hazardous Substances Data Bank (HSDB)
- 78 mmHg
- NIOSH Pocket Guide
- 75 [mm Hg] @21.2 °C
- PAC Chemical Database, U.S. Department of Energy
Vapour density
2 records differ
Above 1 the vapour sinks and collects in pits, sumps and low enclosed spaces.
- 2.41 (Air= 1)
- Hazardous Substances Data Bank (HSDB)
Density
5 records differ
Needed to convert between mass and volume on the label, in transport papers and in a spill estimate.
- 0.805 at 20 °C/4 °C; 0.7997 at 25 °C/4 °C; 0.8255 at 0 °C/4 °C
- Hazardous Substances Data Bank (HSDB)
- Bulk density: 6.71 lb/gal at 20 °C
- Hazardous Substances Data Bank (HSDB)
- 0.7999 @25 °C
- PAC Chemical Database, U.S. Department of Energy
Solubility
6 records, each a different case
Determines spill behaviour, the right extinguishing media and the correct first-aid rinse.
- Constant boiling mixture with water, BP 73.4 °C, contains 88.7% methyl ethyl ketone (MEK); Solubility of water in MEK is 12.5% at 25 °C
- Hazardous Substances Data Bank (HSDB)
- In water, 2.23X10+5 mg/L at 25 °C
- Hazardous Substances Data Bank (HSDB)
- In water, 3.13X10+5 mg/L at 10 °C; 2.11X10+5 mg/L at 25 °C; 1.6X10+5 mg/L at 90 °C
- Hazardous Substances Data Bank (HSDB)
- Soluble in benzene, alcohol, and ether; miscible with oils
- Hazardous Substances Data Bank (HSDB)
- Miscible with ethanol, ether, acetone, benzene, chloroform
- 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 = 0.29
- 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.
- 0.40 cP at 25 °C
- Hazardous Substances Data Bank (HSDB)
Odour
3 records, each a different case
Odour is a warning property only. Many substances are hazardous well below the concentration you can smell.
- Acetone-like odor
- Hazardous Substances Data Bank (HSDB)
- Sweet, pleasant, pungent
- Hazardous Substances Data Bank (HSDB)
- Moderately sharp, fragrant, mint- or acetone-like odor
- Hazardous Substances Data Bank (HSDB)
These are the public records read for Methyl ethyl ketone, 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 Methyl ethyl ketone
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