1-Phenyl-1,3-butanedione
1-Phenyl-1,3-butanedione (CAS: 93-91-4), also known as benzoylacetone, is an organic compound with the molecular formula C10H10O2 and a molar mass of 162.19 g/mol. It is a beta-diketone characterized by its keto-enol tautomerism. Primarily utilized as a chemical building block and in organic synthesis, it serves as a model compound for studying keto-enol equilibria in various solution conditions.
- IUPAC
- Benzoylacetone
- Synonyms
- Benzoylacetone1-Phenylbutane-1,3-dione

Organic Synthesis Intermediate
1-Phenyl-1,3-butanedione acts as a versatile building block in organic chemistry. Its dicarbonyl structure facilitates various synthetic transformations, enabling the creation of more complex organic molecules.
Keto-Enol Equilibrium Studies
This compound is frequently employed as a model substance to investigate the phenomenon of keto-enol tautomerism. Researchers use it to understand equilibrium dynamics in diverse environments, such as acidic aqueous solutions and micellar systems.
Ligand in Coordination Chemistry
As a beta-diketone, 1-Phenyl-1,3-butanedione can act as a bidentate ligand, forming coordination complexes with various metal ions. These complexes may find applications in catalysis or material science.
| Molecular weight | 162.19 |
|---|---|
| Linear formula | C6H5COCH2COCH3 |
| Assay | ≥98.0% (GC) |
| Grade | purum |
| Density | 1.09 g/mL at 25 °C(lit.) |
| Application | 1-Phenyl-1,3-butanedione (benzoylacetone) has been used as a model for 1,3-dicarbonyl compounds to study the keto-enol equilibria in aqueous acid and cationic micellar solutions†. |
| Melting point | 54-56 °C(lit.)54-56 °C |
| Protective equipment | Eyeshields, Gloves, type N95 (US), type P1 (EN143) respirator filter |
|---|---|
| Water hazard class (WGK, DE) | 3 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is 1-Phenyl-1,3-butanedione used for?
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1-Phenyl-1,3-butanedione is used as a building block in organic synthesis, as a model compound for studying keto-enol equilibria, and in coordination chemistry.
What is the CAS number and formula for 1-Phenyl-1,3-butanedione?
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The CAS number for 1-Phenyl-1,3-butanedione is 93-91-4, and its linear formula is C6H5COCH2COCH3.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 1-Phenyl-1,3-butanedione with a purity of ≥98.0% (GC) and a 'purum' grade. We do not represent this product as USP, BP, or EP grade.
How should 1-Phenyl-1,3-butanedione be handled safely?
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Safe handling requires appropriate personal protective equipment, including eyeshields, gloves, and a type N95 (US) or P1 (EN143) respirator filter. Consult the Safety Data Sheet for comprehensive guidance.
Is 1-Phenyl-1,3-butanedione a controlled substance?
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The provided data does not indicate that 1-Phenyl-1,3-butanedione (CAS: 93-91-4) is a controlled substance.
How can I request a quote or sample for 1-Phenyl-1,3-butanedione?
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To request a quote or sample of 1-Phenyl-1,3-butanedione, please use the contact form on our website or contact our sales team directly.
How is 1-Phenyl-1,3-butanedione packed and exported?
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1-Phenyl-1,3-butanedione is carefully packed to ensure stability during transit. As a global supplier, Tech Serve Solutions exports chemicals worldwide in compliance with international shipping regulations.
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