Butane-2,3-dione CAS 431-03-8

Product Description:

Product Name: butane-2,3-dione CAS NO: 431-03-8

Synonyms:

Dimethylglyoxal;

2,3-Butanedione;

Biacetyl,Diacetyl;

Chemical & Physical Properties:

Appearance: Yellow to yellow-green liquid

Assay :≥99.0%

Density: 0.981

Boiling Point: 88℃

Melting Point: -4℃

Flash Point: 7℃

Refractive Index: 1.391-1.399

Water Solubility: 200 g/L (20℃)

Stability: Stable. Flammable. Incompatible with acids, strong bases, metals, reducing agents, oxidizing agents. Protect from moisture and water. Note low flashpoint.

Storage Condition: 2-8℃

Vapor Density: 3 (vs air)

Vapor Pressure: 52.2 mm Hg ( 20℃ )

Safety Information:

RTECS: EK2625000

Hazard Class: 3

Safety Statements: S16-S26-S36/37/39

HS Code: 2914190090

Packing Group: II

WGK Germany: 2

RIDADR: UN 2346

Risk Statements: R11; R20/21/22; R36/38

Hazard Codes: F,Xn

Diacetyl (2,3-butanedione) is a naturally occurring product and can be found in numerous foods such as butter, milk, cheese, smoked or roasted meats, breads, fruits, vegetables, coffee, beer, and wine. Diacetyl is synthesized to be used as a food additive to impart a buttery flavor and has been designated as a generally recognized as safe (GRAS) substance with low acute toxicity (FDA, 1980). Desirable flavor concentrations in food are approximately 0.05–5.0 ppm and above that range it imparts a disagreeable taste. The most recognized recent use has been in microwave popcorn, but it has also been used for many other products (NTP, 1994, 2007). Diacetyl may be used in additives as a liquid, paste, or powder (Boylstein et al., 2006).

It meets GB 2760—1996 standards of edible spices for the moment. It is mainly used for the preparation of food essence like cream, cheese fermentation and coffee typed essence,used in milk, butter, margarine, cheese, sweets and other flavors, such as berry, caramel, chocolate, coffee, cherry, vanilla bean, honey, cocoa, fruit, wine, aroma, rum, nuts, almonds, ginger and so on. It can also be used in fresh fruit fragrance essence for makeup or new type essence in trace amount, and be used as gelatin hardening agent and photographic adhesive agent. 2,3-Butanedione is a flavoring agent that is a clear yellow to yellowish green liquid with a strong pungent odor. It is also known as 2,3-butanedione and is chemically synthesized from methyl ethyl ketone. It is miscible in water, glycerin, alcohol, and eth-er, and in very dilute water solution it has a typical buttery odor and flavor.

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