96-29-7 Usage
Oxime oxygen scavenger
Oxime compounds (dimethyl ketone oxime, methyl ethyl ketoxime (butanone oxime), acetaldehyde oxime) knows as a novel oxygen scavenger is disclosed in the U.S. and patented by Drew Chemical Company in 1984. It displays low toxicity, efficiency, fast-performance, and a blunt protective effects. In Europe and other developed countries it has been widely applied, and China it is also successfully developed in the nineties, and has been successful in promotion.
1. Oxygen scavenging performance: oxime compound is an organic compound with an oxime group. Oxime compounds are currently used for boiler shutdown protection and oxygen mainly acetaldehyde oxime, dimethyl ketone oxime (acetone oxime) and methyl ethyl ketone oxime. Oxime compounds have a strong reduction, easy to react with oxygen. When put in a wide temperature and pressure ranges, oximes has good oxygen scavenging performance. The optimum temperature range is 138~336 ℃, and pressure range is 0.3~13.7Mpa. According to comparative experiments, under the same conditions, the rate of oxygen and oxygen efficiency oximes is higher than that of hydrazine.
2. corrosion and passivation: oximes can restore high iron and copper oxide into suboxide, which can be a good solution in the steel magnetic oxide film formed on the surface of the metal surface passivation plays well, corrosion inhibition. Wherein dimethylketoximino is the best, using the minimum amount required. According to comparative experiments, oxime compounds having the same passivation, corrosion inhibition hydrazine, can significantly reduce the iron content in solution at high temperature and pressure conditions. The steel has a protective effect, among which the dimethylketoximino is best, which requires the least amount . Meanwhile, oxime compounds have cleaning actions to copper corrosion products deposited in the pipeline, economizer, etc., which is in the initial period of oximes. This is the reason why furnace copper water content is significantly higher.
3. Volatile: the volatile degree of oxime compounds is higher than that of hydrazine, DEHA, morpholine, cyclohexylamine, etc. It is close to the volatility of NH3. When the steam condenses, highly volatile oxygen scavenger will has a certain amount of condensation agent which is dissolved in water, therefore, helpful to protect the condensate system metal material.
4. decomposition: By experiments under the high temperature and pressure conditions, the decomposition products of oxime compound is NH3, N2, H2O, trace of acetic acid, formic acid produces, no adverse effects on water vapor system.
5. low toxicity: based on the data comparison of LD50, the LD50 for hydrazine is 290mg/kg, acetaldehyde oxime is 1900mg/kg, methyl ethyl ketone oxime is 2800mg/kg, dimethylket oximino 5500mg/kg. So the toxicity of hydrazine is very strong, and toxicity of oxime compound is very small. It belongs to low toxicity compounds. Test through the skin and mucous membrane contact with oxygen scavengers showed no significant oximes oxygen scavenger irritation and damage, but hydrazine causes damage of skin irritation, erosion, mucosal hyperemia.
The above information is edited by the lookchem of Tian Ye.
Chemical Properties
Different sources of media describe the Chemical Properties of 96-29-7 differently. You can refer to the following data:
1. Colorless oily liquid. Melting point-29.5 ℃. Boiling point 152-153 ℃, 59-60 ℃ (2kPa), the relative density is 0.9232 (20/4 ℃), and refractive index 1.4410. With alcohol, ether immiscibility, dissolved in 10 parts of water.
2. 2-Butanone oxime is a colorless or light yellow oily transparent liquid that has strong complexation with metal ions and is volatile in the air. It can react with hydrochloric acid and sulfuric acid to form methyl ethyl ketone.
Uses
Different sources of media describe the Uses of 96-29-7 differently. You can refer to the following data:
1. Methyl ethyl ketoxime is mainly used as anti-skinning agent and silicon curing agent for alkyd resin coatings. It is used as an antioxidant to prevent skin formation, which is better than butyraldehyde oxime and cyclohexanone oxime.used in organic synthesis.For a variety of oil-based paint, alkyd paint, epoxy paint, such as esters during storage and transportation of anti-skinning process, also used as a curing agent silicon.
2. 2-Butanone oxime was employed as reagent and solvent in the syntheses of ketoimine and 2,4-dipyridyl-1,3,5-triazapentadiene palladium(II) complexes. It was also used in the synthesis of novel acetaldiimine cobalt complex, [CoI2{((CH3CH2)(CH3)C=NO)2C(CH3)2}]. Methyl ethyl ketoxime is used primarily as an antiskinning agent in alkyd coating resins
Preparation
Different sources of media describe the Preparation of 96-29-7 differently. You can refer to the following data:
1. With suitable precautions, to 1 liter of the sodium hydroxylamine di-sulfonate solution from Preparation 2-1 (approx. 1.2 moles) is added 72 gm (1 mole) of methyl ethyl ketone. The mixture is warmed to 70°C. Then the reaction flask is wrapped with insulation and allowed to cool slowly for 12 hr.
After neutralization with 48% sodium hydroxide solution, the oxime is extracted from the reaction mixture with benzene. The benzene solution is distilled fractionally. The product distills between 152° and 154°C; yield, 65 gm (75%).
2. 2-Butanone oxime is obtained by the reaction of butanone and hydroxylamine hydrochloride. It can also be synthesized by the reaction between butanone and hydroxylamine sulfate.
General Description
Clear colorless liquid with a musty odor.
Air & Water Reactions
Highly flammable. Water soluble.
Reactivity Profile
2-Butanone oxime is sensitive to heat. Has exploded at least twice when heated in the presence of acidic impurities [Chem. Eng. News, 1974, 52(35), 3]. Reacts with oxidizing agents. Mixtures with strong acids may explode. Reacts with sulfuric acid to form an explosive product .
Fire Hazard
2-Butanone oxime is combustible.
Flammability and Explosibility
Notclassified
Safety Profile
Poison by
intraperitoneal route. Moderately toxic by
subcutaneous route. May explode if heated.
Reacts with sulfuric acid to form an
explosive product. When heated to
decomposition it emits toxic fumes of NOX.
Properties and Applications
TEST ITEMS
SPECIFICATION
APPEARANCE
COLORLESS TRANSPARENT CLEAR OILY LIQUID,FLAMMABLE
GRADE
EXCELLENT GRADE
MEKO CONTENT
99.7%min
WATER CONTENT
0.04%
ACID NUMBER (KOH mg/g)
0.05 max
CHROMA NO. (PLATINUM-COBALT)
2 max
TEST ITEMS
SPECIFICATION
APPEARANCE
COLORLESS TRANSPARENT CLEAR OILY LIQUID,FLAMMABLE
GRADE
EXCELLENT GRADE
MEKO CONTENT
99.7%min
WATER CONTENT
0.04%
ACID NUMBER (KOH mg/g)
0.05 max
CHROMA NO. (PLATINUM-COBALT)
2 max
Check Digit Verification of cas no
The CAS Registry Mumber 96-29-7 includes 5 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 2 digits, 9 and 6 respectively; the second part has 2 digits, 2 and 9 respectively.
Calculate Digit Verification of CAS Registry Number 96-29:
(4*9)+(3*6)+(2*2)+(1*9)=67
67 % 10 = 7
So 96-29-7 is a valid CAS Registry Number.
InChI:InChI=1/C4H9NO/c1-3-4(2)5-6/h6H,3H2,1-2H3/b5-4-
96-29-7Relevant articles and documents
Analogues of the Herbicide, N-Hydroxy- N-isopropyloxamate, Inhibit Mycobacterium tuberculosis Ketol-Acid Reductoisomerase and Their Prodrugs Are Promising Anti-TB Drug Leads
Kandale, Ajit,Patel, Khushboo,Hussein, Waleed M.,Wun, Shun Jie,Zheng, Shan,Tan, Lendl,West, Nicholas P.,Schenk, Gerhard,Guddat, Luke W.,McGeary, Ross P.
, p. 1670 - 1684 (2021/02/27)
New drugs to treat tuberculosis (TB) are urgently needed to combat the increase in resistance observed among the current first-line and second-line treatments. Here, we propose ketol-acid reductoisomerase (KARI) as a target for anti-TB drug discovery. Twenty-two analogues of IpOHA, an inhibitor of plant KARI, were evaluated as antimycobacterial agents. The strongest inhibitor of Mycobacterium tuberculosis (Mt) KARI has a Ki value of 19.7 nM, fivefold more potent than IpOHA (Ki = 97.7 nM). This and four other potent analogues are slow- and tight-binding inhibitors of MtKARI. Three compounds were cocrystallized with Staphylococcus aureus KARI and yielded crystals that diffracted to 1.6-2.0 ? resolution. Prodrugs of these compounds possess antimycobacterial activity against H37Rv, a virulent strain of human TB, with the most active compound having an MIC90 of 2.32 ± 0.04 μM. This compound demonstrates a very favorable selectivity window and represents a highly promising lead as an anti-TB agent.
Functional panchromatic BODIPY dyes with near-infrared absorption: Design, synthesis, characterization and use in dye-sensitized solar cells
Huaulmé, Quentin,Aumaitre, Cyril,Kontkanen, Outi Vilhelmiina,Beljonne, David,Sutter, Alexandra,Ulrich, Gilles,Demadrille, Renaud,Leclerc, Nicolas
supporting information, p. 1758 - 1768 (2019/08/07)
We report two novel functional dyes based on a boron-dipyrromethene (BODIPY) core displaying a panchromatic absorption with an extension to the near-infrared (NIR) range. An innovative synthetic approach for preparing the 2,3,5,6-tetramethyl-BODIPY unit is disclosed, and a versatile way to further functionalize this unit has been developed. The optoelectronic properties of the two dyes were computed by density functional theory modelling (DFT) and characterized through UV-vis spectroscopy and cyclic voltammetry (CV) measurements. Finally, we report preliminary results obtained using these functional dyes as photosensitizers in dyesensitized solar cells (DSSCs).
Green synthesis of low-carbon chain nitroalkanes via a novel tandem reaction of ketones catalyzed by TS-1
Chu, Qingyan,He, Guangke,Xi, Yang,Wang, Ping,Yu, Haoxuan,Liu, Rui,Zhu, Hongjun
, p. 46 - 50 (2018/02/09)
A green and efficient one-pot method has been developed for the synthesis of low-carbon chain nitroalkanes via a novel TS-1 catalyzed tandem oxidation of ketones with H2O2 and NH3. The tandem reaction including ammoxidation, oximation and oxidation of oximes, afforded up to 88% yield and 98% chemo-selectivity requiring only 90 min, at 70 °C and atmospheric pressure. Moreover, this method was even amenable to 100-fold scale-up without loss of chemical efficiency with 87% yield, represents a significant advance towards industrial production of nitroalkanes. Furthermore, the plausible mechanism of TS-1 catalyzed tandem oxidation of ketones to prepare nitroalkanes was proposed.
