BUTANEDIONE

Butanedione is a volatile organic diketone widely used as a flavoring agent, chemical intermediate, and processing aid in food, chemical, and industrial applications.
Butanedione is known for its strong buttery aroma and low odor threshold, making it effective at very low concentrations.
Butanedione is also an important intermediate in organic synthesis and specialty chemical production.

CAS Number: 431-03-8
EC Number: 207-069-8
Molecular Formula: C₄H₆O₂
Molecular Weight: 86.09 g/mol

Synonyms: Butanedione, Diacetyl, 2,3-Butanedione, Dimethyl Glyoxal, Butanedione, Diacetyl, 2,3-Butanedione, Dimethyl Glyoxal (common reference), Dimethyl Diketo Compound, 2,3-Diketobutane, Biacetyl, Diacetyl Ketone, Diacetyl Compound, Butane-2,3-dione, Alpha-Diketone Butanedione, Vicinal Diketone Butanedione, Diacetyl Flavor Compound, Diacetyl Flavoring Agent, Diacetyl Aroma Compound, Diacetyl Butter Flavor, Diacetyl Food Flavoring, Diacetyl Natural Flavor Component, Diacetyl Synthetic Flavor, Diacetyl Fermentation Byproduct, Diacetyl Brewing Compound, Diacetyl Dairy Flavor, Diacetyl Butter Aroma, Diacetyl Volatile Ketone, Diacetyl Organic Ketone, Diacetyl Oxygenated Solvent, Diacetyl Reactive Diketone, Diacetyl Chemical Intermediate, Diacetyl Fine Chemical, Diacetyl Specialty Chemical, Diacetyl Industrial Chemical, Diacetyl Technical Grade, Diacetyl Food Grade, Diacetyl Flavor Grade, Diacetyl Pharmaceutical Intermediate, Diacetyl Analytical Reagent, Diacetyl Laboratory Chemical, Diacetyl Process Chemical, Diacetyl Carbonyl Compound, Diacetyl Alpha-Dicarbonyl, Diacetyl Short-Chain Diketone, Diacetyl Low Molecular Weight Ketone, Diacetyl Yellow Liquid, Diacetyl Volatile Liquid, Diacetyl Odorant Compound, Diacetyl Sensory Compound, Diacetyl Aroma Ketone, Diacetyl Flavor Raw Material, Diacetyl Chemical Raw Material, Diacetyl Reaction Intermediate, Diacetyl Organic Compound, Diacetyl Flavor Industry Chemical, Diacetyl Fermentation Metabolite, Diacetyl Food Processing Aid, Diacetyl Butter Note Compound, Diacetyl Flavor Enhancer, Diacetyl Volatile Flavor Chemical

APPLICATIONS

Butanedione is used as a flavoring substance.
Butanedione provides a buttery and creamy flavor profile in food products.
Butanedione is used at very low levels due to its strong aroma.

Butanedione is applied in food manufacturing.
Butanedione is used in baked goods, dairy analogs, and snack seasonings.
Butanedione enhances sensory richness and aroma perception.

Butanedione is used as a chemical intermediate.
Butanedione participates in synthesis of heterocyclic compounds.
Butanedione is used in production of pharmaceuticals and specialty chemicals.

Butanedione is applied in industrial processes.
Butanedione is used in polymer and resin modification.
Butanedione supports controlled chemical reactions requiring diketone functionality.

Butanedione is used in laboratory and research applications.
Butanedione serves as a reagent in organic chemistry.
Butanedione is used in analytical method development.

Butanedione is used as a flavoring agent in food products.
Butanedione provides a buttery aroma and taste in food formulations.
Butanedione enhances sensory profiles in dairy-flavored products.

Butanedione is used in bakery products.
Butanedione improves buttery notes in baked goods.
Butanedione enhances flavor intensity in pastries and cookies.

Butanedione is used in margarine and butter substitutes.
Butanedione contributes to authentic butter-like flavor profiles.
Butanedione improves consumer acceptance of fat-reduced spreads.

Butanedione is used in snack food flavorings.
Butanedione enhances savory and creamy flavor notes.
Butanedione improves overall taste balance in processed snacks.

Butanedione is used in confectionery products.
Butanedione supports creamy and caramel-like flavor development.
Butanedione improves flavor richness in candies and sweets.

Butanedione is used in beverage flavor formulations.
Butanedione enhances creamy notes in flavored drinks.
Butanedione supports flavor stability in ready-to-drink beverages.

Butanedione is used in microwave popcorn flavorings.
Butanedione delivers characteristic buttery aroma during heating.
Butanedione improves sensory appeal of popcorn products.

Butanedione is used in animal feed flavoring.
Butanedione enhances palatability of feed formulations.
Butanedione improves feed intake in livestock nutrition.

Butanedione is used in fragrance formulations.
Butanedione contributes buttery and creamy notes in perfumery.
Butanedione enhances complexity of fragrance compositions.

Butanedione is used in chemical synthesis.
Butanedione acts as an intermediate in organic reactions.
Butanedione supports synthesis of heterocyclic compounds.

Butanedione is used in laboratory research.
Butanedione serves as a reagent in chemical studies.
Butanedione supports reaction mechanism investigations.

Butanedione is used in flavor research and development.
Butanedione assists in creation of dairy-type flavor profiles.
Butanedione supports formulation optimization in food science.

Butanedione is used in dairy flavor concentrates.
Butanedione intensifies creamy notes in concentrated flavor systems.

Butanedione is used in cheese flavor formulations.
Butanedione enhances aged and fermented cheese profiles.

Butanedione is used in yogurt flavor development.
Butanedione contributes buttery nuances to cultured dairy flavors.

Butanedione is used in ice cream flavorings.
Butanedione improves richness and mouthfeel perception.

Butanedione is used in milkshake flavor bases.
Butanedione enhances creamy sensory characteristics.

Butanedione is used in instant food flavor powders.
Butanedione improves flavor release upon reconstitution.

Butanedione is used in soup and sauce flavorings.
Butanedione adds depth to creamy and savory recipes.

Butanedione is used in ready-meal flavor systems.
Butanedione enhances overall flavor fullness after reheating.

Butanedione is used in seasoning blends for snacks.
Butanedione supports buttery notes in savory coatings.

Butanedione is used in extrusion snack flavorings.
Butanedione improves aroma development during processing.

Butanedione is used in plant-based dairy alternative flavors.
Butanedione mimics butter-like notes in vegan formulations.

Butanedione is used in coffee creamer flavor systems.
Butanedione enhances creamy perception without added fat.

Butanedione is used in powdered beverage mixes.
Butanedione improves flavor authenticity after dilution.

Butanedione is used in aroma compounds for food packaging tests.
Butanedione supports migration and aroma interaction studies.

Butanedione is used in fermentation research.
Butanedione serves as a marker compound for flavor development.

Butanedione is used in brewery flavor analysis.
Butanedione assists monitoring of fermentation byproducts.

Butanedione is used in wine aroma studies.
Butanedione supports evaluation of buttery off-notes.

Butanedione is used in sensory science education.
Butanedione trains assessors to recognize buttery aromas.

Butanedione is used in olfactory threshold determination studies.
Butanedione helps define aroma perception limits.

Butanedione is used in analytical calibration standards.
Butanedione supports gas chromatography reference testing.

Butanedione is used in quality control of flavor ingredients.
Butanedione ensures consistency of buttery aroma profiles.

Butanedione is used in chemical reaction modeling.
Butanedione acts as a model diketone compound.

Butanedione is used in synthesis of flavor intermediates.
Butanedione supports creation of complex aroma molecules.

Butanedione is used in heterocycle synthesis research.
Butanedione participates in ring-formation reactions.

Butanedione is used in polymer chemistry studies.
Butanedione assists investigation of carbonyl reactivity.

Butanedione is used in laboratory demonstrations of diketone behavior.
Butanedione illustrates structure–odor relationships.

Butanedione is used in aroma stability testing.
Butanedione helps evaluate oxidation and volatilization effects.

Butanedione is used in aroma training standards.
Butanedione serves as a reference compound for buttery odor.
Butanedione supports sensory panel calibration.

Butanedione is used in industrial flavor manufacturing.
Butanedione enables consistent flavor production at scale.
Butanedione improves reproducibility of flavor batches.

DESCRIPTION

Butanedione is an organic diketone with the chemical formula C₄H₆O₂.
Butanedione is also known as diacetyl.
Butanedione appears as a yellowish-green liquid at room temperature.

Butanedione has a strong buttery odor.
Butanedione is highly volatile and readily evaporates.
Butanedione is soluble in water, alcohol, and ether.

Butanedione occurs naturally in fermented products.
Butanedione is produced during fermentation by certain bacteria and yeasts.
Butanedione contributes characteristic aroma to butter and dairy products.

Butanedione has a low boiling point and high vapor pressure.
Butanedione is chemically reactive due to its diketone structure.
Butanedione is widely used in flavor and fragrance industries.

Butanedione should be handled with proper ventilation.
Butanedione should be stored in tightly sealed containers.
Butanedione is valued for its strong flavor impact and distinctive aroma.

Butanedione is a clear to yellowish liquid at room temperature.
Butanedione has a strong buttery odor detectable at very low concentrations.
Butanedione is highly volatile and readily evaporates.

Butanedione is miscible with water and many organic solvents.
Butanedione exhibits high reactivity due to its diketone structure.
Butanedione readily participates in nucleophilic addition reactions.

Butanedione is flammable and should be handled with care.
Butanedione vapors may cause irritation at elevated concentrations.
Butanedione requires controlled handling and adequate ventilation.

Butanedione is stable under normal conditions when properly stored.
Butanedione should be protected from heat and ignition sources.
Butanedione should be handled in compliance with occupational safety guidelines.

PROPERTIES

Chemical Formula: C₄H₆O₂
Molecular Weight: 86.09 g/mol
Appearance: Clear to yellowish liquid
Odor: Strong buttery odor
Density: ~0.985 g/cm³ at 20°C
Melting Point: −4°C
Boiling Point: ~88°C
Vapor Pressure: ~52 mmHg at 20°C
Solubility in Water: Completely miscible
Solubility in Organic Solvents: Miscible with ethanol, ether, and acetone
Flash Point: ~−6°C (closed cup)
Autoignition Temperature: ~300°C
Refractive Index: ~1.394 at 20°C
Viscosity: Low
Chemical Reactivity: Highly reactive diketone
Stability: Stable under recommended storage conditions
Storage Temperature: Store below 25°C in tightly closed containers

FIRST AID

Inhalation:
Move the affected person to fresh air immediately.
Seek medical attention if breathing difficulties occur.

Skin Contact:
Wash thoroughly with soap and water.
Remove contaminated clothing.

Eye Contact:
Rinse eyes with water for at least 15 minutes.
Seek immediate medical attention if irritation persists.

Ingestion:
Rinse mouth with water.
Do not induce vomiting and seek medical attention.

Note to Physicians:
Treat symptomatically and monitor respiratory effects.

HANDLING AND STORAGE

Handling:
Use adequate ventilation and explosion-proof equipment.
Wear protective gloves, goggles, and appropriate PPE.
Avoid inhalation of vapors.

Avoidance:
Avoid heat, sparks, open flames, and oxidizing agents.
Avoid prolonged exposure to vapors.

Spill Procedures:
Absorb with inert material and ventilate area.
Dispose of waste according to local regulations.

Storage:
Store in tightly closed, fire-resistant containers.
Keep in a cool, dry, well-ventilated area.
Protect from heat, light, and ignition sources.