Methyl Ethyl Ketone
CAS：78-93-3
Cyclohexanone
CAS：108-94-1
Acetone
CAS：67-64-1
Acetic Acid
CAS：64-19-7
Ethyl Acetate
CAS：141-78-6
Toluene
CAS：108-88-3
Benzene
CAS：71-43-2
Ethanol
CAS：64-17-5
Methanol
CAS：67-56-1
In malaysia butanone from 2 butanol
2-Butanol and Butanone Production in Saccharomyces cerevisiae …
23/7/2014· the main aim of this project was to evaluate the possibility of producing 2-butanol from meso -2,3-butanediol in saccharomyces cerevisiae ( figure 1 ), as a safe microorganism with a long history of industrial usage. 2,3-butanediol is known to be produced in s. cerevisiae, in low amounts, and there are a nuer of reports on its production …
CA2565675A1 - Process for the preparation of 2-butanol - Google
The 2-butanone/S-2-butanol mixture was first obtained from the heptanol phase (boiling point approx. 158-161 C) via distillation prior to the separation of 2-butanone (boiling point 80
Production of 2-butanol through meso -2, 3-butanediol consumption in lactic acid bacteria …
1/11/2014· The isolates, SE20 and SE31, were found to be the best 2-butanol producers with about 0.8 g L −1 2-butanol produced after 7 days (equivalent to conversion yield of 0.8 g g −1 of 2, 3-butanediol), while the strain reported to show the highest production in a previous study (Speranza et al ., 1996 ), LB 734, produced 0.29 g L −1.
2-Butanol - Wikipedia
Although some 2-butanol is used as a solvent, it is mainly converted to butanone (methyl ethyl ketone, MEK), an important industrial solvent and found in many domestic cleaning agents and paint removers. Though most paint removers have ceased using MEK in their products due to health concerns and new laws.
- Manufacture and appliions· Solubility· Precautions· References
- Diacetyl, acetoin, 2,3-butyleneglycol, 2-butanone and 2-butanol concentrations in ripening Cheddar cheese Journal of Dairy Research - Caridge Core/cite>
1/6/2009· Diacetyl, acetoin, 2,3-butyleneglycol, 2-butanone and 2-butanol concentrations have been determined in ripened Cheddar cheese made using Streptococcus diacetilactis DRC1 or Str. cremoris AM 2 or HP as starter culture. Diacetyl content was found to be initially
2-Butanone ToxFAQs™ ATSDR - Centers for Disease Control …
2-Butanone is an industrial chemical. 2-Butanone is also called methyl ethyl ketone. It can also be present in the environment from natural sources. It is made by some trees and found naturally in some fruits and vegetables in small amounts. 2-Butanone is used in a nuer of industrial products such as paints and other coatings.
2-Butanone Toxic Substances Toxic Substance Portal
Summary: 2-Butanone is a manufactured chemical but it is also present in the environment from natural sources. It is a colorless liquid with a sharp, sweet odor. It is also known as methyl ethyl ketone (MEK). 2-Butanone is produced in large quantities.
Metabolic Engineering of Klebsiella pneumoniae for the Production of 2-Butanone …
14/10/2015· 2-Butanone is an important commodity chemical of wide appliion in different areas. In this study, Klebsiella pneumoniae was engineered to directly produce 2-butanone from glucose by extending its native 2, 3-butanediol synthesis pathway. To identify the potential enzyme for the efficient conversion of 2, 3-butanediol to 2-butanone, we screened different …
Butanol from butanone - Big Chemical Encyclopedia
First, a small difference in selectivity is seen for the non- cavitating ultrasound compared to the control experiment (obtained from the inverse of the ratio of lifetimes). For example, the ratio of 2-butanone to 2- butanol products for the stirred without 1-pentanol is 0.74 (equal to 60.7/82.0). Second, comparing these values to the
2-Butanol - 2-Butanol, sec-Butyl alcohol - Sigma-Aldrich
2-Butanol, sec-Butyl alcohol Linear Formula: CH3CH2CH (OH)CH3 CAS Nuer: 78-92-2 Molecular Weight: 74.12 Product Comparison Guide Use the product attributes below to configure the comparison table. (Select up to 3 total.) Select Attribute Select Attribute Select Attribute Sort by: Default Product Nuer Product Description Pricing 8.22263
2-Butanol C4H10O - PubChem
2022-11-19. Create. 2005-03-26. 2-Butanol is a natural product found in Aloe africana, Cichorium endivia, and other organisms with data available. LOTUS - the natural products occurrence database. Sec-butyl alcohol appears as a clear colorless liquid with an alcohol odor. Flash point below 0 °F. Less dense than water.
Butanol from butanone - Big Chemical Encyclopedia
The reference compounds for Rohrschneider s constants are (1) benzene, (2) ethanol, (3) 2-butanone, (4) nitromethane, and (5) pyridine.) The minimum temperature is that at which normal gas- liquid chromatography (GLC) behavior is expected. Below that temperature, die phase will be a solid or an extremely viscous gum.
2-Butanol 99 78-92-2 - Sigma-Aldrich
2-Butanol 99%; CAS Nuer: 78-92-2; EC Nuer: 201-158-5; Synonyms: (±)-2-Butanol,sec-Butyl alcohol; Linear Formula: CH3CH2CH(OH)CH3; find Sigma-Aldrich-W510254 MSDS, related peer-reviewed papers, technical documents, similar products & more at
2-Butanol - Wikipedia
2-Butanol, or sec-butanol, is an organic compound with formula C H 3 CH(OH)CH 2 CH 3. Its structural isomers are 1-butanol. Although some 2-butanol is used as a solvent, it is mainly converted to butanone (methyl ethyl ketone, MEK), an important Though
- Manufacture and appliions· Solubility· Precautions· References
- CA2565675C - Process for the preparation of 2-butanol - Google/cite>
The 2-butanone/S-2-butanol mixture was first obtained from the heptanol phase (boiling point approx. 158-161 C) via distillation prior to the separation of 2-butanone (boiling point 80
2-Butanol and Butanone Production in Saccharomyces cerevisiae …
23/7/2014· 2-Butanol and its chemical precursor butanone (methyl ethyl ketone – MEK) are chemicals with potential uses as biofuels and biocommodity chemicals. In order to produce 2-butanol, we have demonstrated the utility of using a TEV-protease based expression system to achieve equimolar expression of the individual subunits of the two protein complexes involved …
EP1745134B1 - Process for the production of 2-butanol by enzymatic reduction of 2-butanone …
butanone butanol process according carbonyl reductase phase Prior art date 2004-05-10 Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of
2‐Butanone - Hoell - - Major Reference Works - Wiley Online Library
15/4/2009· 2-Butanone is the second most important commercially produced ketone after acetone. It is produced primarily by dehydrogenation of 2-butanol. 2-Butanone is used as a solvent in paints and adhesives and shows increasing demand.
Convert butan-2-one to butan-2-ol
Here butan-2-ol is a ketones and butan-2-ol is alcohol. Others reducing reagents can also be used for the conversion of butan-2-one to butan-2-ol but the most appropriate reagent is lithium aluminium hydride. -The reaction involved in the conversion of butan-2-one to butan-2-ol is: H 3 C − C H 2 − C ∥ O − C H 3 → r e d u c t i o n L i
2-Butanone Toxic Substances Toxic Substance Portal
Summary: 2-Butanone is a manufactured chemical but it is also present in the environment from natural sources. It is a colorless liquid with a sharp, sweet odor. It is also known as methyl ethyl ketone (MEK). 2-Butanone is produced in large quantities.
Enzymatic Oxidation of Butane to 2‐Butanol in a Bubble Column
Herein, we demonstrate the appliion of a peroxygenase for the hydroxylation of the inert, gaseous substrate butane to 2-butanol in a bubble column reactor. The influence of hydrogen peroxide feed rate and enzyme loading on product formation, overoxidation to butanone and alytic efficiency is investigated at 200 mL scale.
Enzymatic Oxidation of Butane to 2‐Butanol in a Bubble Column
28/4/2020· The rAaeUPO-alysed overoxidation of 2-butanol to butanone was more pronounced in this experiment (38 % of the total product), which may be the result of a decreased specific gassing rate as compared to the previous experiment and the resulting higher abundance of 2-butanol for the peroxidase reaction.
The formation of 2-butanone and 2-butanol in Cheddar cheese
1/6/2009· The bacteriological formation of 2-butanone and 2-butanol was investigated. The data suggest that 2-butanol is formed in cheese via 2-butanone in 3 steps, each step being carried out specifically by a different microbial species. Suitable …
Diacetyl, acetoin, 2,3-butyleneglycol, 2-butanone and 2-butanol concentrations in ripening Cheddar cheese Journal of Dairy Research - Caridge Core
1/6/2009· Only trace amounts of 2-butanone and 2-butanol were observed in the 3 cheeses even though the concentration of a postulated precursor, 2,3-butyleneglycol, was present in considerable concentration in the DRC1 and AM 2 cheeses.
The formation of 2-butanone and 2-butanol in Cheddar cheese
1/6/2009· The final reduction of 2-butanone to 2-butanol could be readily carried out in MRS medium by a strain of L. brevis. Results from cheese made aseptically indie that 2-butanone is formed in Cheddar cheese only when non-starter organisms are present.
The reactivity, selectivity and structure of 2-butanol on clean and …
1/4/2020· The almost simultaneous desorption of both 2-butanol (at 254 K) and 2-butanone (at 263 K) imply that β-hydride elimination from the 2-butoxide species and its rehydrogenation to form 2-butanol occur with very similar rates and that 2-butanone formation is reaction-rate limited and thus must result in the formation of the η1 -bonded form.
Production of 2-butanol through meso -2, 3-butanediol consumption in lactic acid bacteria …
1/11/2014· The isolates, SE20 and SE31, were found to be the best 2-butanol producers with about 0.8 g L −1 2-butanol produced after 7 days (equivalent to conversion yield of 0.8 g g −1 of 2, 3-butanediol), while the strain reported to show the highest production in a previous study (Speranza et al ., 1996 ), LB 734, produced 0.29 g L −1.
2-Butanone - NIST
2-Butanone Formula: C 4 H 8 O Molecular weight: 72.1057 IUPAC Standard InChI: InChI=1S/C4H8O/c1-3-4 (2)5/h3H2,1-2H3 IUPAC Standard InChIKey: ZWEHNKRNPOVVGH-UHFFFAOYSA-N CAS Registry Nuer: 78-93-3 Chemical structure: This structure is also available as a 2d Mol file or as a computed 3d SD file
The formation of 2-butanone and 2-butanol in Cheddar cheese
1/6/2009· The bacteriological formation of 2-butanone and 2-butanol was investigated. The data suggest that 2-butanol is formed in cheese via 2-butanone in 3 steps, each step being carried out specifically by a different microbial species. Suitable …
2-Butanone - CheK
1/1/2022· 2-Butanone - Safety butanone is a low toxicity class, when inhaled vapor, can stimulate the eyes and nostril mucosa, and cause Head Pain. Severe poisoning can lead to nuness of hands and feet, long-term contact can cause dermatitis, the air concentration is allowed to be 200 × 10-6 away from the fire, dry place storage.
Leave a Reply
Your Email address will not be published
Your Rating : Very Good!