Jinan, Shandong, China
Member Since: 2017
Business Type: Manufacturer/Factory,Trading Company
|2,3-Butanedione Basic information|
|Chemical Properties Uses Content analysis Toxicity Quantity restrictions Production Category Acute toxicity Stimulus data Flammability and Hazardous characteristics Storage|
|Synonyms:||dimnertong;2,3-Butanedione 2,3-Diketobutane Dimethylglyoxal;2,3-Butanedione 97%;Two2,3-butylketone;2, 3 - butyl diketone;2,3-DIOXOBUTANE;2,3-DIKETOBUTANE;2,3-BUTANEDIONE|
|Product Categories:||Ketones;Organic Building Blocks;B;Bioactive Small Molecules;Building Blocks;C3 to C6;Organics;Biochemistry;Reagents for Oligosaccharide Synthesis;ketone Flavor;Carbonyl Compounds;Cell Biology;Chemical Synthesis|
|2,3-Butanedione Chemical Properties|
|Melting point||-4--2 °C|
|Boiling point||88 °C(lit.)|
|density||0.985 g/mL at 20 °C|
|vapor density||3 (vs air)|
|vapor pressure||52.2 mm Hg ( 20 °C)|
|FEMA||2370 | DIACETYL|
|refractive index||n20/D 1.394(lit.)|
|Water Solubility||200 g/L (20 ºC)|
|Stability:||Stable. Flammable. Incompatible with acids, strong bases, metals, reducing agents, oxidizing agents. Protect from moisture and water. Note low flashpoint.|
|CAS DataBase Reference||431-03-8(CAS DataBase Reference)|
|NIST Chemistry Reference||2,3-Butanedione(431-03-8)|
|EPA Substance Registry System||2,3-Butanedione (431-03-8)|
|RIDADR||UN 2346 3/PG 2|
|Autoignition Temperature||365 °C|
|Hazardous Substances Data||431-03-8(Hazardous Substances Data)|
|Toxicity||LD50 orally in rats: 1580 mg/kg (Jenner)|
|2,3-Butanedione Usage And Synthesis|
|Chemical Properties||Yellow to yellow green liquid, a creamy fragrance after bulk dilution (1mg/kg), high vapor pressure is, evaporate quickly at room temperature, melting point-3~-4ºC, boiling point 87~88ºC, flash point 13ºC. Soluble in ethanol, ether, most non-volatile oil and propylene glycol, soluble in glycerin and water, insoluble in mineral oil. Natural products exist in laurel oil, ajawa oil, angelica root oil, raspberry, strawberry, cream, Wine etc. Because it is volatile, it only exists in in the primary distillate and distilled water.|
|Uses||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.
|Content analysis||The content of 2,3-Butanedione is analyzed according to method 1(hydroxylamine method) of the aldehyde and ketone analyzing methods (OT-7). The sample weight is 500mg. The equivalent factor (e) in calculation is 21.52 .It is Fit to be analyzed using nonpolar column in GT-10-4.|
|Toxicity||Not specified by ADI (FAO/WHO,1994)|
|Quantity restrictions||FEMA(mg/kg): FEMA(mg/kg):soft drinks 2.5;cold drinks 5.9;sweets 21;bakery products44; puddings 19;chewing gum 35;shortening 11.|
|Production||In nature, Diacetyl exists widely in many Plant essential oils, such as iris oil, angelica oil, laurel oil, etc. It is the main component of butter and other natural products fragrance.|
In industry, methyl ethyl ketone was treated with nitrite acid to generate diacetylmonoxime. Diacetylmonoxime is then decomposed by sulfuric acid to produce Butanedione.
Diacetyl can be obtained by chemical ionization method from high content of essential oil. Two parts of phosphoric acid were added to one part of essential oil to
produce crystalline adduct CH3CO-COCH3. Butanedione was released after the addition of water. Excessive addition of phosphoric acid will lead to liquid adduct product.
Diacetyl can be obtained by special fermentation of glucose.
Diacetyl can be synthesized using methyl ethyl ketone as raw material.
Diacetyl was oxidized by sodium nitrite in the presence of hydrochloric acid,
Then, the process of istillation is carried out after hydrolysis in the presence of sulfuric acid to produce Butanedione.