Description

2,3-Butanedione CAS NO 431-03-8 is a high-purity diketone compound, also known as diacetyl, prized for its intense, characteristic buttery aroma and flavor. This high-quality ingredient is essential for creating authentic flavor profiles and facilitating key chemical reactions in industrial processes. It is a critical component for flavor and fragrance manufacturers, food technologists, and research laboratories requiring a reliable and consistent supply.

Application

• Flavor & Fragrance Industry: Primary use as a key flavoring agent for butter, cream, caramel, and butterscotch notes in food products, beverages, and confectionery.
• Food Processing: Used in margarines, microwave popcorn, snack foods, and dairy product analogs to impart or enhance a rich, buttery taste.
• Chemical Synthesis: Serves as a versatile building block and precursor in organic synthesis for pharmaceuticals, agrochemicals, and fine chemicals.
• Laboratory & Research: Utilized as a standard or reagent in analytical chemistry, microbiology studies, and metabolic pathway research.
• Beverage Production: Employed in the flavoring of alcoholic beverages like chardonnay wine and some beers to contribute to their complex aroma profiles.

Basic Information

Product Name	2,3-Butanedione
CAS No.	431-03-8
Molecular Formula	C4H6O2
Molecular Weight	86.09 g/mol
Synonyms	Diacetyl; Butanedione; 2,3-Diketobutane; Dimethyl diketone; Biacetyl; 2,3-Butadione; Dimethylglyoxal (obsolete)
EINECS	207-069-8

Quality Control

We supply 2,3-Butanedione in various grades, including Food Grade (FCC) and high-purity analytical standards. Our products undergo rigorous quality testing to ensure compliance with industry standards. Certificates of Analysis (COA) detailing purity, identity, and specific impurity profiles are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, well-ventilated area away from heat sources and incompatible materials. Due to its highly volatile nature, ensure containers are kept tightly sealed when not in use to prevent evaporation and maintain product integrity. Recommended storage temperature is 2-8°C (refrigerated) for extended stability, though short-term storage at controlled room temperature (15-25°C) is acceptable.

Specification

Item	Specification
Appearance	Clear, yellow to green-yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 98.0%
Specific Gravity (20/20°C)	0.980 - 0.990
Refractive Index (20°C)	1.393 - 1.399

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.