Are Acetylacetone, 2,4-Pentanedione and ACAC the same compound?

Yes. These names identify pentane-2,4-dione, CAS 123-54-6. It is a beta-diketone that exists in keto and enol forms, not a mixture of acetone and acetic acid.

What are the key specifications and physical properties of Acetylacetone?

Industrial-grade acetylacetone is usually a colourless to slightly yellowish liquid with purity >=99.5%, density about 0.972-0.975 g/cm3 and refractive index near 1.454. Agree GC assay, colour, water, acidity, distillation range and high-boiling residue with the methods.

What storage and handling points apply to Acetylacetone?

Store in closed flammable-liquid containers away from ignition sources and oxidizing agents. Acetylacetone is flammable with a flash point around 34-35 C and should be handled with ventilation and chemical-resistant PPE.

Acetylacetone CAS 123-54-6

Acetylacetone (ACAC), CAS 123-54-6, also known as 2,4-pentanedione, is a beta-diketone that exists in keto and enol forms. It is used as a bidentate ligand for metal acetylacetonate catalysts and coordination compounds, in PVC stabilizer or crosslinking systems, and as an intermediate for pharmaceuticals, agrochemicals, heterocycles and coatings. Confirm the GC assay, water, acidity and impurity limits, packaging and documentation before ordering; COA, TDS and SDS are available on request.

CAS: 123-54-6
Synonyms: Acetylacetone; 2,4-Pentanedione; Pentane-2,4-dione; Acac
Einecs: 204-634-0
Molecular Formula: C₅H₈O₂
Grade: Industrial grade, purity ≥99.5%
Package: Confirm packaging compatible with the offered form and destination requirements.

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Product Description

Acetylacetone

Synonyms: Diacetylmethane; 2,4-Pentanedione; Pentane-2,4-dione

CAS number: 123-54-6

Molecular formula: C₅H₈O₂

Molecular weight: 100.12

Appearance: Colorless to slightly yellowish transparent liquid with a characteristic ketone-like odour

Boiling point: 140.4 °C (101.3 kPa)

Melting point: -23.5 °C

Relative density: 0.9721 g/mL (25/4 °C); 0.9753 g/mL (20/20 °C)

Refractive index: 1.4541 (17 °C)

Flash point: 34 °C

Solubility: Slightly soluble in water; miscible with organic solvents such as ethanol, ether, chloroform, acetone and glacial acetic acid

FAQ - Technical & Supply Chain

Q:
Are Acetylacetone, 2,4-Pentanedione and ACAC the same compound?

A: Yes. These names identify pentane-2,4-dione, CAS 123-54-6. It is a beta-diketone that exists in keto and enol forms, not a mixture of acetone and acetic acid.
Q:
What is Acetylacetone used for?

A: It is used as a bidentate ligand for metal catalysts and coordination compounds, and as an intermediate for pharmaceuticals, agrochemicals, heterocycles, coatings and extraction agents. State the intended use because trace impurities can matter.
Q:
What are the key specifications and physical properties of Acetylacetone?

A: Industrial-grade acetylacetone is usually a colourless to slightly yellowish liquid with purity >=99.5%, density about 0.972-0.975 g/cm3 and refractive index near 1.454. Agree GC assay, colour, water, acidity, distillation range and high-boiling residue with the methods.
Q:
What storage and handling points apply to Acetylacetone?

A: Store in closed flammable-liquid containers away from ignition sources and oxidizing agents. Acetylacetone is flammable with a flash point around 34-35 C and should be handled with ventilation and chemical-resistant PPE.

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