Acetylacetone

CAS Number
123-54-6
EC Number
204-634-0
Chemical Formula
C5H8O2
Molecular Weight
100.12 g/mol
Abbreviation
acac

Description

Acetylacetone (CAS 123-54-6), also known as Hacac or acac, is a beta-diketone solvent and chelating agent used across chemical manufacturing, coatings, and catalyst production. Its ability to form stable metal complexes drives demand in synthesis and formulation workflows where precise metal coordination is required for high-performance industrial applications.

In catalyst manufacturing, acac coordinates with metals such as vanadium, cobalt, and zirconium to produce metal acetylacetonate precursors used in polymerization and cross-linking systems. Printing ink and coating formulators use it as a cross-linking agent and solvent carrier, improving adhesion and cure performance in various commercial packaging applications.

Pharmaceutical manufacturers rely on it as a building block in active ingredient synthesis, where controlled reactivity with metal centers supports consistent intermediate production. At lower concentrations, it functions as a flavoring agent in food-grade applications, providing a creamy, buttery note to confectionery and beverage formulations for the food industry.

Acetylacetone is supplied as a clear liquid in drum and IBC quantities, with bulk tanker options available for high-volume industrial buyers requiring consistent supply chains. Standard commercial grades include technical and reagent-grade specifications. A food-grade designation is available for flavoring applications where purity documentation is required by audits.

Other Names (Synonyms)

pentane-2,4-dione|pentan-2,4-dione|Hacac|CH3-CO-CH2-CO-CH3|acetyl 2-propanone|2,4-pentanedione|2,4-pentadione|2,4-dioxopentane|acac

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 -23 °C
Boiling Point 140 °C
Density 0.9721 g/cm³ @ Temp: 25 °C
Flash Point 66 °F
Appearance 2,4-Pentanedione is a colorless to yellowish liquid with a sour, rancid odor. The Odor Threshold is 0.01 ppm.
Color very deep green-yellow
Odor pleasant odor
Form Liquid
Water Solubility 16 g/100 mL (20 ºC)
Vapor Pressure 6 mm Hg ( 20 °C)
Refractive Index n 20/D 1.452(lit.)
pH 6 (200g/l, H2O, 20℃)
Log P 0.68 at 20℃

Documentation

Safety & Handling Learn More

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

Hazard Statements

H226 Flammable liquid and vapor
H302 Harmful if swallowed
H311 Toxic in contact with skin
H312 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 29141900
UN Number 2310
ADR Class 3
Packing Group III
WGK (Germany) 1
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