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Methyl Ethyl Ketone (MEK)

Methyl Ethyl Ketone (MEK)

CAS Number: 78-93-3

Molecular Formula: C4H8O or CH3COCH2CH3

High-Evaporation Solvent / VOCHigh Evaporation RateExcellent SolvencyRegulated VOCLow ResidueUS EPA (VOC Control) ListedREACH / OSHA RegisteredUN 1193 (Hazard Class 3)

About Methyl Ethyl Ketone (MEK)

Methyl Ethyl Ketone (MEK) is a colorless, volatile, and flammable solvent with excellent solvency for resins, coatings, and adhesives. It is universally used in the production of paints, plastics, textiles, and in degreasing applications. Also refered to as (2-Butanone, METHYL ETHYL KETONE, Butan-2-one) by Methyl Ethyl...

Synonyms

  • 2-butanone
  • ethyl methyl ketone
  • methyl ethyl ketone
  • methylethyl ketone
  • 2-Butanone
View all

Methyl Ethyl Ketone (MEK) Specifications

CAS Number
78-93-3
Molecular Formula
C4H8O or CH3COCH2CH3
IUPAC Name
butan-2-one
Canonical SMILES
CCC(=O)C or CC(=O)CC
InChI Key
ZWEHNKRNPOVVGH-UHFFFAOYSA-N
InChI
1S/C4H8O/c1-3-4(2)5/h3H2,1-2H3
PubChem CID
6569
EINECS Number
201-159-0
MDL Number
MFCD00008538
UNSPSC Code
12142102
eClass
32010502 (Ketones)
NACRES
NA.21
HSN No
29141200
Melting point
-86°C
Boiling point
79.6°C
Solubility
Miscible with water, alcohol, and most organic solvents
Density
0.806 at 68 °F (USCG, 1999) - Less dense than water; will float
logP
log Kow = 0.29
Appearance
Clear, colorless liquid
Odor
Sweet, sharp odor
Vapor Pressure
70 mm Hg at 20°C
GHS Classification
Flammable Liquids: Category 2 Eye Irritation: Category 2A Specific Target Organ Toxicity (Single Exposure): Category 3
Hazard Statements
H225: Highly flammable liquid and vapor. H319: Causes serious eye irritation. H336: May cause drowsiness or dizziness.
Precautionary Statements
P210: Keep away from heat/sparks/open flames. P280: Wear protective gloves and eye protection. P261: Avoid breathing vapors.

Paints and Coatings

Used as a fast-evaporating solvent for acrylics, vinyls, and urethanes.

Adhesives and Sealants

Solvent for contact adhesives, rubber cements.

Printing Inks

Used in flexographic, gravure printing inks.

Chemical Processing

Intermediate in pharmaceutical and resin production.

Cleaning Agents

Degreasing agent in electronics and metal parts cleaning.

Storage

Store in a cool, well-ventilated area, away from heat sources

Stacking

Drums 2 high, ventilated chemical storage

Transport

UN Certified drums/tankers (UN 1193)

Packaging

160–200 kg drums, IBC tanks, bulk tankers

  1. 2-butanone
  2. ethyl methyl ketone
  3. methyl ethyl ketone
  4. methylethyl ketone
  5. 2-Butanone

Methyl Ethyl Ketone (MEK) FAQs

Minimum Order Quantity

25 kg (evaluation) · 1 MT (commercial)

Lead Time

3 – 5 weeks estimated

Delivery Terms

FOB*

Packaging

20 L pails, 200 L HDPE drums, 1000 L IBC

US Availability

US Facility Inventory

Documentation

US SDS · COA · TDS · Specification sheet

US Regulatory & Quality Information

TSCA status*

US SDS / HazCom*

GHS classification*

ISO 9001:2015 site*

DOT shipping classification*

FDA status*

EPA status*

California Prop 65*

Reliable US supply chain

Regulatory compliance

On-time delivery

Technical expert support

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