Overview
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.
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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℃ |
Safety & Handling
Warning GHS02 GHS07 GHS06 GHS08 Hazard Statements H226 Flammable liquid and vapor H302 Harmful if swallowed H311 Toxic in contact with skin H312 Harmful in contact with skin H320 Causes eye irritation H331 Toxic if inhaled H335 May cause respiratory irritation H336 May cause drowsiness or dizziness H341 Suspected of causing genetic defects H370 Causes damage to organs H373 May causes damage to organs through prolonged or repeated exposure H402 Harmful to aquatic life H412 Harmful to aquatic life with long lasting effects H311+H331 Toxic in contact with skin or if inhaled. 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. P241 Use explosion-proof [electrical/ventilating/lighting/…] equipment. P242 Use non-sparking tools. P243 Take action to prevent static discharges. P260 Do not breathe dust/fume/gas/mist/vapours/spray. P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P262 Do not get in eyes, on skin, or on clothing. P264 Wash … thoroughly after handling. P270 Do not eat, drink or smoke when using this product. P271 Use only outdoors or in a well-ventilated area. P273 Avoid release to the environment. P280 Wear protective gloves/protective clothing/eye protection/face protection. P316 Get emergency medical help immediately. P317 Get emergency medical help. P318 IF exposed or concerned, get medical advice. P319 Get medical advice/attention if you feel unwell. P321 Specific treatment (see … on this label). P330 Rinse mouth. P405 Store locked up. P501 Dispose of contents/container in accordance with local regulations. P264+P265 Wash … thoroughly after handling. P301+P317 Get emergency medical help. P302+P352 IF ON SKIN: Wash with plenty of water. P304+P340 IF INHALED: Remove person to fresh air and keep comfortable for breathing. P308+P316 Get emergency medical help immediately. P337+P317 If eye irritation persists: Get medical advice/attention. Get emergency medical help. P361+P364 Take off immediately all contaminated clothing and wash it before reuse. P362+P364 Take off contaminated clothing and wash it before reuse. P370+P378 Use … for extinction. P403+P233 Store in a well-ventilated place. Keep container tightly closed. P403+P235 Store in a well-ventilated place. Keep cool. P303+P361+P353 IF ON SKIN (or hair): Take off immediately all contaminated clothing. Rinse skin with water/shower. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
Trade & Regulatory
| HS Code | 29141900 |
| UN Number | 2310 |
| ADR Class | 3 |
| Packing Group | III |
| WGK (Germany) | 1 |
Other Names
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Chemical Properties
- CAS Number
- 123-54-6
- EC Number
- 204-634-0
- Mol. Weight
- 100.12
- HS Code
- 29141900
- Category
- Catalysts & Catalyst Precursors