Methyl isobutyl ketone

CAS Number
108-10-1
EC Number
203-550-1
Chemical Formula
C6H12O
Molecular Weight
100.16 g/mol
FEMA Number
FEMA 2731
Abbreviation
MIBK

Description

Methyl isobutyl ketone (CAS 108-10-1), commonly known as MIBK, is a mid-boiling ketone solvent used across coatings, adhesives, and extraction processes. Its slow evaporation rate and strong solvency make it a preferred choice. Controlled drying and resin compatibility are critical procurement considerations for this versatile chemical. In industrial coatings and lacquers, MIBK dissolves nitrocellulose, epoxy, and vinyl resins to produce high-gloss finishes.

These film-forming finishes exhibit minimal blushing during the application process. Adhesive formulators rely on it as a carrier solvent in contact cements and pressure-sensitive adhesive systems where clean release is required. In plastics processing, it functions as a cross-linking and curing solvent for polymer systems including rubber and synthetic resins. At food-grade and FEMA 2731-approved purity, it is also used as a flavoring agent.

In small quantities, it can impart fruity, sweet notes to food and beverage formulations. MIBK is supplied as a clear liquid in standard drum, IBC, and bulk tanker quantities for various industrial and commercial needs. Technical grade is the most common specification for industrial solvent applications. Food-grade material meeting specific requirements is available for flavor use, ensuring compliance with necessary safety and quality protocols.

Purity levels typically range from 99% upward depending on the intended application grade. This high level of purity ensures consistent performance across diverse manufacturing sectors and specialized chemical processes.

Other Names (Synonyms)

Shell mibk|Methylpentan-2-one|Methyl-isobutyl-cetone|Methyl I-butyl ketone|Isopropyl acetone|Isobutyl-methylketon|Isobutyl methyl ketone|Hexone|MIBK

Key Technical Features

  • High Purity Grade standard
  • Consistent Batch Quality
  • Full Regulatory & REACH Support
  • Global Logistics Network enabled

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Physical Properties

Melting Point -85 °C
Boiling Point 115.8 °C @ Press: 760 Torr
Density 0.8042 g/cm³ @ Temp: 20 °C
Flash Point 56 °F
Appearance MIBK is a colorless liquid with a pleasant, sweet, fruity odor.
Color APHA: ≤15
Odor Pleasant; mild, characteristic; sharp; non-residual; ketonic.
Form Liquid
Water Solubility 17 g/L (20 ºC)
Vapor Pressure 15 mm Hg ( 20 °C)
Refractive Index n 20/D 1.395(lit.)
pH 7 (20°C)
Log P 1.3-1.9 at 20℃

Documentation

Safety & Handling Learn More

Danger
GHS02· Flammable GHS07· Irritant GHS08· Health Hazard GHS06· Toxic

Hazard Statements

H225 Highly Flammable liquid and vapor
H303 May be harmful if swallowed
H305 May be harmful if swallowed and enters airways
H313 May be harmful in contact with skin

Precautionary Statements

P203 Obtain, consult and follow expert instructions for use.
P210 Keep away from heat, hot surfaces, sparks, open flames and other ignition sources. No smoking.
P233 Keep container tightly closed.
P240 Ground and bond container and receiving equipment.

Trade & Regulatory

HS Code 2914 13 00
UN Number 1245
ADR Class 3
Packing Group II
Storage Class 3 - Flammable liquids
WGK (Germany) 1
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