China (Mainland)
2,3-Butanedione Manufacturer/Best price/In stock CAS NO.431-03-8
- Min.Order: 1 Kilogram
- Payment Terms: L/C,T/T,MoneyGram
- Product Details
Keywords
- 2,3-Butanedione
- 2,3-Butanedione Factory in China
- 2,3-Butanedione in stock manufacturer
Quick Details
- ProName: 2,3-Butanedione Manufacturer/Best pric...
- CasNo: 431-03-8
- Molecular Formula: C4H6O2
- Appearance: colorless to light yellow liquid
- Application: It is an important raw material and in...
- DeliveryTime: Within 3 days upon the receipt of the ...
- PackAge: Plastic drum or as required
- Port: Shanghai, Qingdao, Dalian or the other...
- ProductionCapacity: 10 Metric Ton/Month
- Purity: 99%
- Storage: Store in dry, dark and ventilated plac...
- Transportation: As required
- LimitNum: 1 Kilogram
- Package: According to the clients requirements
- Port: Shanghai or the other appointed
- Production Capacity: 10 Metric Ton/Month at least
- MOQ: 1 Kilogram
- Transportation: By sea or by air
Superiority
| Product Name | 2,3-Butanedione | ||
| Structure |
|
||
| CAS NO. |
431-03-8 |
||
| MF. | C4H6O2 | ||
| MW. | 86.09 | ||
| EINECS | 207-069-8 | ||
| Product introduction |
Synonyms: 2,3-Butanedione 2,3-Diketobutane Dimethylglyoxal; 2,3-Butanedione 97%; 2,3-butylketone; 2, 3 - butyl diketone;2,3-DIOXOBUTANE;2 ,3-DIKETOBUTANE; 2,3-BUTANEDIONE;2,3-BUTADIONE
|
||
| 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) |
| refractive index |
n |
| FEMA | 2370 | DIACETYL |
| Fp | 45 °F |
| storage temp. | 2-8°C |
| solubility | 200g/l |
| form | Liquid |
| color | Clear yellow |
| explosive limit | 2.4-13.0%(V) |
| Water Solubility | 200 g/L (20 ºC) |
| Merck | 14,2966 |
| JECFA Number | 408 |
| BRN | 605398 |
| Stability: | Stable. Flammable. Incompatible with acids, strong bases, metals, reducing agents, oxidizing agents. Protect from moisture and water. Note low flashpoint. |
| InChIKey | QSJXEFYPDANLFS-UHFFFAOYSA-N |
| 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) |
| Safety Information |
| Hazard Codes | F,Xn |
| Risk Statements | 11-20/22-38-41-36/38-20/21/22-37/38 |
| Safety Statements | 9-16-26-37/39-36/37/39-39 |
| RIDADR | UN 2346 3/PG 2 |
| WGK Germany | 2 |
| RTECS | EK2625000 |
| F | 13 |
| Autoignition Temperature | 365 °C |
| TSCA | Yes |
| HazardClass | 3 |
| PackingGroup | II |
| HS Code | 29141990 |
| Hazardous Substances Data | 431-03-8(Hazardous Substances Data) |
| Toxicity | LD50 orally in rats: 1580 mg/kg (Jenner) |
| 2,3-Butanedione Usage And Synthesis |
| 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) GRAS(FEMA；FDA，§184．1278，2000) |
| 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. |
| 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～-4℃， boiling point 87～88℃, flash point 13℃. 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. |
| Usage | 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. |
| 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. |
| Category | flammable liquid |
| Acute toxicity | Oral-rat LD50: 1580mg/kg, oral-mice: 250 mg/kg |
| Stimulus data | Skin-rabbit 500 mg/24h middle |
| Flammability and Hazardous characteristics | Flammable in case of fire, high temperature and oxidant, Combustion produces irritating smoke. |
| Storage | Ventilated and dry warehouse with low temperature. Separated from oxidant, acid. |
| Chemical Properties | liquid with a butter-like odour |
| Chemical Properties | 2,3-Butanedione is a constituent of many fruit and food aromas and well-known as a constituent of butter. Many methods are known for itsmanufacture, for example, dehydrogenation of 2,3-butanediol with a copper chromite catalyst. Biotechnological production on an industrial scale is referred. It is used mainly in aromas for butter and roasted notes. Large quantities are used for flavoring margarine; small amounts are used in perfumes. |
| Chemical Properties | Diacetyl has a very strong buttery odor in very dilute solution. |
| Occurrence | Reported in the oils of: Finnish pine, angelica and lavender; in the flowers of Polyalthia canangioides Boerl. var. angustifolia and Fagroea racemosa Jack. The following plants are also reported to contain diacetyl: Monodora grandiflora Benth., Magnolia tripetale L., Ximenia aegyptiaca L., Petasites fragrans Presl., various narcissi and tulips. It has been identified in certain types of wine, the natural aromas of raspberry and strawberry, and the oils of lavender, lavandin, Réunion geranium, Java citronella, and Cistus ladaniferus L. It is also reported to be found in ligonberry, guava, raspberry, strawberry, cabbage, peas, tomato, vinegar, various cheeses, yogurt, milk, butter, chicken, beef, mutton, pork, cognac, beer, wines, whiskies, tea and coffee. |
| Uses | 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 ether, and in very dilute water solution it has a typical buttery odor and flavor. |
| Uses | Inactivates aminopeptidase-N.1 Cyclocondensation with amines has been used to form triazine2 and pteridine ring systems.3 Also used as a precursor to α-diones.4 |
| Uses | Carrier of aroma of butter, vinegar, coffee, and other foods. |
| Definition | ChEBI: An alpha-diketone that is butane substituted by oxo groups at positions 2 and 3. It is a metabolite produced during the malolactic fermentation. |
| Preparation | From methyl ethyl ketone by converting to the isonitroso compound and then decomposing to diacetyl by hydrolysis with HCl; by fermentation of glucose via methyl acetyl carbinol. |
| Aroma threshold values | Detection: 0.3 to 15 ppb: recognition: 5 ppb |
| Taste threshold values | Taste characteristics at 50 ppm: sweet, buttery, creamy and milky. |
| General Description | A clear colorless liquid with a strong chlorine-like odor. Flash point 80°F. Less dense than water. Vapors heavier than air. |
| Air & Water Reactions | Highly flammable. Soluble in water. |
| Reactivity Profile | 2,3-Butanedione is a flammable liquid, b.p. 88° C, moderately toxic. When heated to decomposition 2,3-Butanedione emits acrid smoke and fumes [Sax, 9th ed., 1996, p. 544]. |
| Health Hazard | Inhalation or contact with material may irritate or burn skin and eyes. Fire may produce irritating, corrosive and/or toxic gases. Vapors may cause dizziness or suffocation. Runoff from fire control may cause pollution. |
| Fire Hazard | HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames. Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers. Runoff to sewer may create fire or explosion hazard. Containers may explode when heated. Many liquids are lighter than water. |
| Safety Profile | A poison by ingestion and intraperitoneal routes. A skin irritant. Human inhalation hazard in popcorn manufacture. Human mutation data reported. Flammable liquid. Dangerous fire hazard when exposed to heat or flame. To fight fire, use alcohol foam, CO2, dry chemical. When heated to decomposition it emits acrid smoke and fumes. See also KETONES. |
| Toxicology | Diacetyl is an intensely yellowish or greenish-yellow mobile liquid. It has a very powerful and diffusive, pungent, buttery odor and typically used in flavor compositions, including butter, milk, cream, and cheese. Diacetyl was found to be mutagenic in Ames test conducted under various different conditions with Salmonella typhimurium strains. For example, diacetyl was mutagenic by TA100 in the absence of S9 metabolic activation at doses up to 40 mM/plate. It was mutagenic in a modified Ames assay in Salmonella typhimurium strains TA100 with and without S9 activation. The acute oral LD50 of diacetyl in guinea pigs was calculated to be 990 mg/kg. The acute oral LD50 of diacetyl in male rats was calculated to be 3400 mg/kg, and in female rats, the LD50 was calculated to be 3000 mg/kg. When male and female rats were administered via gavage a daily dose of 1, 30, 90, or 540 mg/kg/day of diacetyl in water for 90 days, the high-dose produced anemia, decreased weight gain, increased water consumption, increased leukocyte count, and an increase in the relative weights of liver, kidneys, and adrenal and pituitary glands. The data for teratogenicity and carcinogenicity are not available. Although the FDA has affirmed diacetyl GRAS as a flavoring agent, low molecular weight carbonyls, such as formaldehyde, acetaldehyde, and glyoxal have been reported to possess a certain chronic toxicity. |
| Purification Methods | Dry biacetyl over anhydrous CaSO4, CaCl2 or MgSO4, then distil it in a vacuum under nitrogen, taking the middle fraction and storing it at Dry-Ice temperature in the dark (to prevent polymerization). [Beilstein 1 IV 3644.] |
Details
As a technical enterprise, Changzhou Xuanming Chemical Co., Ltd. is mainly engaged in the research and development, production as well as import and export business of solvents. Now, we mainly produce and sell all kinds of solvents, including ethylbenzene, Sulfolane, Phosphorus pentasulfide, dimethylsulfoxide, Curing agents, Ketones, Esters, Ethers, Acyl chlorides, aldehydes, Acids, quinones, Pyridines, pharmaceutical intermediates, pesticide intermediates and other fine chemicals. Our products are well sold in China and international market now. Due to complete product types and good prices, our company enjoys high reputation and credibility among enterprise customers.
Located in Subei Industrial Park, our manufacturing base is well known for modern production facilities and strong technical supports. Now, Changzhou Xuanming Chemical Industry Co., Ltd is receiving high reputations among enterprises customers for such tenet of "credibility-stressed and contract-abiding image, guaranteed quality, one–stop products as well as small profits and quick returns
