Diisobutyl ketone

CAS Number
108-83-8
EC Number
203-620-1
Chemical Formula
C9H18O
Molecular Weight
142.24 g/mol
FEMA Number
FEMA 3537
Abbreviation
DIBK

Description

Diisobutyl ketone (CAS 108-83-8), also known as DIBK or Valerone, is a slow-evaporating ketone solvent used across coatings, adhesives, and flavor applications. Its controlled evaporation rate makes it a preferred carrier in formulations where extended open time or gradual release is commercially valuable for industrial and specialty chemical processes.

In coatings and lacquers, DIBK functions as a high-boiling solvent that improves flow and leveling in nitrocellulose and acrylic systems, reducing surface defects in the final film. Adhesive formulators use it to control viscosity and working time in contact cement and pressure-sensitive adhesive systems. In the flavor industry, it is approved under FEMA 3537.

As a flavoring agent, it contributes fruity, sweet notes to food and beverage products. Personal care formulators incorporate it as a solvent carrier in nail care products and aerosol formulations. It is highly valued where compatibility with resins and slow evaporation are required. Diisobutyl ketone is supplied as a clear liquid in standard industrial drum and IBC quantities.

Technical grade is the most common supply form for solvent applications, while flavor-grade material is available for food and cosmetic use. Buyers should confirm purity specifications. Grade documentation is essential when sourcing for regulated end-use categories. Ensure all materials meet necessary safety and regulatory requirements for your specific application needs.

Other Names (Synonyms)

Valerone|sym-Diisopropyl acetone|Isobutyl propyl ketone|Isobutyl N-propyl ketone|DIBK|4-Heptanone, 2-methyl-|2-Methylheptan-4-one|2-methyl-4-heptanone

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 -41.5 °C
Boiling Point 168 °C
Density 0.8062 g/cm³ @ Temp: 20 °C
Flash Point 120 °F
Appearance colourless liquid
Color Clear colorless to slightly yellow
Odor Mild; characteristic ketonic.
Form Liquid
Water Solubility 0.05 g/100 mL
Vapor Pressure 1.7 mm Hg ( 20 °C)
Refractive Index n 20/D 1.412(lit.)
Log P 3.71 at 20℃

Documentation

Safety & Handling Learn More

Warning
GHS02· Flammable GHS07· Irritant GHS08· Health Hazard

Hazard Statements

H226 Flammable liquid and vapor
H305 May be harmful if swallowed and enters airways
H320 Causes eye irritation
H335 May cause respiratory irritation

Precautionary Statements

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.
P241 Use explosion-proof [electrical/ventilating/lighting/…] equipment.

Trade & Regulatory

HS Code 29141990
UN Number 1157
ADR Class 3
Packing Group III
Storage Class 3 - Flammable liquids
WGK (Germany) 1
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