BUTANONE OXIME (MEKO)

Butanone oxime (MEKO) is used in paint industry as anti-skinning agent.
Butanone oxime (MEKO) is mainly used as an anti-skinning agent and silicone curing agent for alkyd resin coatings.
Butanone oxime (MEKO) is used as an antioxidant to prevent skinning, and its effect is better than butyraldehyde oxime and cyclohexanone oxime.

CAS Number: 96-29-7
EC Number: 202-496-6
MDL number: MFCD00013935
Molecular Formula: C4H9NO
Molecular Weight: 87.12 g/mol

SYNONYMS:
MEKO, 2-Butanone oxime, Butanone oxime, Ethyl methyl ketone oxime, Ethyl methyl ketoxime, MEK-oxime, Methyl ethyl ketoxime, Methyl ethyl ketone oxime, MEKO, MEK-oxime, 2-Butanone oxime, Butanone oxime, Ethyl methyl ketone oxime, Ethyl methyl ketoxime, MEK-oxime, Methyl ethyl ketone oxime, Skino #2, Troykyd anti-skin B, MEKO, UN1993, MEK-oxime, Butanone oxime, 2-BUTANONE OXIME, Troykyd anti-skin B, Ethyl methyl ketone oxime, Methyl ethyl ketone oxime, USAF AM-3, Ethyl methyl ketoxime, Methyl ethyl ketoxime, USAF EK-906, Ethyl-methylketonoxim, 2-Butanone, oxime, NSC 442, NSC-442, 51YGE935U9, 96-29-7, WLN: QNUY2&1, Skino #2, UNII-51YGE935U9, CCRIS 1382, HSDB 8043, 2-Isonitroso-butan, butan-2-one oxime, EINECS 202-496-6, BRN 1698241, (Z)-2-Butanone oxime, (2Z)-butan-2-one oxime, EC 202-496-6, 4-01-00-03250 (Beilstein Handbook Reference), 2-butanone, oxime, (2Z)-, (2E)-N-hydroxybutan-2-imine, (EZ)-Methylethyl ketone oxime, NSC442, NSC65465, NSC-65465, 10341-59-0, Q5230000, Butanone oxime, Methyl ethyl ketone oxime, 2-BUTANONE OXIME, Ethyl methyl ketoxime, USAF EK-906, Ethyl-methylketonoxim, UNII-51YGE935U9, 2-Butanone, oxime, Methyl ethyl ketoxime, 51YGE935U9, Troykyd anti-skin B, Skino #2, USAF AM-3, WLN: QNUY2&1, CCRIS 1382, 96-29-7, NSC 442, EINECS 202-496-6, BRN 1698241, B0688, NS00077176, MEKO, 2-Butanone oxime, Butanone oxime, Ethyl methyl ketone oxime, Ethyl methyl ketoxime, MEK-oxime, Methyl ethyl ketoxime, Methyl ethyl ketone oxime, MEKO, MEKO, METHYL ETHYL KETOXIME, BUTANONE OXIME, Ethyl methyl ketone oxime, ETHYL METHYL KETOXIME, SKINO, SKINO 2, skino#2, Exkin 2, Aron M 1, Methylethyl Ketoxime, Methyl Ethyl Ketoxime, 2-Butanone Oxime, 2-Butoxime, Butanoxime, Ethyl-methylketoxime, Ethyl Methyl Ketoxime, MEKO, MEK-Oxime, Aron M 1, (2E)-2-Butanone Oxime, (2Z)-butan-2-one oxime, (NZ)-N-butan-2-ylidenehydroxylamine, Skino #2, Exkin 2, Troykyd Anti-Skin B, USAF AM-3, USAF DO-44, USAF EK-906, MEK-oxime, Butanone oxime, Methyl ethyl ketone oxime, 2-BUTANONE OXIME, Ethyl methyl ketoxime, USAF EK-906, Ethyl-methylketonoxim, UNII-51YGE935U9, 2-Butanone, oxime, Methyl ethyl ketoxime, 51YGE935U9, Troykyd anti-skin B, Skino #2, USAF AM-3, WLN: QNUY2&1, CCRIS 1382, 96-29-7, NSC 442, EINECS 202-496-6, BRN 1698241, Butanone oxime, Ethyl methyl ketone oxime, Ethyl methyl ketoxime, Methyl ethyl ketone oxime, Methyl ethyl ketoxime, MEK-Oxime, USAF EK-906, Ethyl-methylketonoxim, Skino No. 2, Troykyd anti-skin B, USAF AM-3, 2-Butoxime, Aron M 1, SKINO 2, Pentan-2-one,oxime, Butan-2-one, oxime, NSC 442, (2)-N-Hydroxy-2-butanimine, MEKO, 2-Butanone oxime, 2-Butoxime, 2-BUTANONE OXIME, methylethyl ketoxime, Ethyl-methylketonoxim, DTXSID1021821, MEKO, DTXCID701821, RefChem:909691, 51YGE935U9, 96-29-7, Methyl ethyl ketoxime, 2-Butanone, oxime, Butanone oxime, Ethyl methyl ketoxime, Methylethylketoxime, 2-Butanoneoxime, 2-Butoxime, Pentan-2-one,oxime, Butan-2-one, oxime, Skino No. 2, Aron M 1, N-butan-2-ylidenehydroxylamine, SKINO 2, ethylmethyl-ketoxime, methylethylketone oxime, SCHEMBL65570, Methyl Ethyl Ketoxime (MEKO), SCHEMBL1269409, SCHEMBL6263636, SCHEMBL7827567, SCHEMBL8011450, SCHEMBL8011975, CHEMBL3181847, AKOS017263158, DB-302901

Butanone oxime (MEKO) is an essential chemical used as an anti-skinning agent in paints and lacquers, as a blocking-agent for isocyanate in polyurethanes, and in the manufacture of oxime silanes (that are used as crosslinkers for silicone sealants).
Butanone oxime (MEKO) is a high production volume (HPV) chemical produced at over one million pounds annually.

Butanone oxime (MEKO) is a clear, colorless, combustible liquid.
Butanone oxime (MEKO) is severely irritating to eyes.
Butanone oxime (MEKO), also known as methyl ethyl ketoxime or MEKO, is an organic compound featuring a ketoxime functional group, with the chemical formula C4H9NO.

The production method of Butanone oxime (MEKO) is mainly prepared by the reaction of butanone and potassium hydroxide or ammonia water, and the main components are butanone and oxime.
Butanone is an organic solvent with central nervous system inhibitory effect, while oxime is irritating to mucous membranes.

Butanone oxime (MEKO) is a colorless oily liquid with a slight ammonia smell.
Butanone oxime (MEKO)'s molecular formula is C4H9NO and its molecular weight is 87.12 g/mol.
Butanone oxime (MEKO) has strong reducing and complexing abilities and can form stable complexes with a variety of metal ions.

Under acidic conditions, Butanone oxime (MEKO) is easily hydrolyzed to form butanone and ammonia, and has high reactivity, which makes it have a wide range of application potential in a variety of chemical reactions.
Butanone oxime (MEKO) is the organic compound with the formula C2H5C(NOH)CH3.

This colourless liquid, Butanone oxime (MEKO), is the oxime derivative of methyl ethyl ketone.
MEKO, as Butanone oxime (MEKO), in the paint industry, is used to suppress "skinning" of paints: the formation of a skin on paint before it is used.

Butanone oxime (MEKO) can be miscible with alcohol and ether.
Butanone oxime (MEKO) is soluble in 10 parts of water.
Butanone oxime (MEKO) is colorless oily liquid.

Butanone oxime (MEKO) is a clear, colorless liquid with a musty odor.
Butanone oxime (MEKO), synonymous with 2-Butanone Oxime, is a clear, colorless liquid that is 99.5% pure.

Butanone oxime (MEKO) is a clear colorless liquid with a musty odor.
Butanone oxime (MEKO) is water soluble.

USES and APPLICATIONS of BUTANONE OXIME (MEKO):
Butanone oxime (MEKO) is primarily used in the chemical industry as an anti-skinning agent in alkyd paint formulations, where it prevents the formation of a skin on the surface of paint by inhibiting the oxidative polymerization of drying oils.
The mechanism of action of Butanone oxime (MEKO) in this context involves its ability to chelate metal ions that serve as catalysts in the oxidative drying process, thereby reducing the rate of cross-linking or hardening of the surface layer of the paint.

Beyond its industrial applications, Butanone oxime (MEKO) has been a subject of research in organic synthesis and materials science.
In organic chemistry, Butanone oxime (MEKO) is used as a synthon for the preparation of other chemical compounds, particularly those involving the transformation of the oxime group into other functionalities through various chemical reactions such as Beckmann rearrangement, reduction, and S_N2 type reactions.

This versatility makes Butanone oxime (MEKO) a valuable reagent in the synthesis of amines, amides, and other nitrogen-containing compounds.
Additionally, Butanone oxime (MEKO) is studied for its role in corrosion inhibition, particularly in metal treatment and protection processes, where its oxime group can adsorb onto metal surfaces, forming a protective layer that impedes oxidation and corrosion.

Butanone oxime (MEKO) application area is paint material productiion.
Butanone oxime (MEKO) is used in paint industry as anti-skinning agent.
Butanone oxime (MEKO) is mainly used as an anti-skinning agent and silicone curing agent for alkyd resin coatings.

Butanone oxime (MEKO) is used as an antioxidant to prevent skinning, and its effect is better than butyraldehyde oxime and cyclohexanone oxime.
In addition, Butanone oxime (MEKO) is also used in the fields of nanotechnology and materials science in organic synthesis as a synthetic intermediate.

Butanone oxime (MEKO) can also be used as a solvent, extractant and surfactant.
Anti-Skinning Agent: Butanone oxime (MEKO) delays the formation of a skin on surface-drying paints and coatings during storage, especially in alkyd paint systems.

Blocking Agent: Butanone oxime (MEKO) is used in polyurethane chemistry to temporarily block isocyanate groups.
Paints & Coatings use of Butanone oxime (MEKO): Present in lacquers, printing inks, varnishes and diverse coatings for improved shelf life.
Adhesives & Sealants: Butanone oxime (MEKO) is incorporated in some silicone and urethane adhesive formulations.

Corrosion Inhibitor: Butanone oxime (MEKO) is used in industrial water systems and boiler treatments (as reported in regulatory reviews).
Butanone oxime (MEKO) is mainly used as glycerol-phthalic resin coating, anti-skining agent, silicon curing agent, and desoxidant of boiler water system.

Butanone oxime (MEKO) is also used in the synthesis of waterborne polyurethane resin and organic synthesis.
Butanone oxime (MEKO) is mainly used as glycerol-phthalic resin coating, anti-skining agent, silicon curing agent, and desoxidant of boiler water system.

Butanone oxime (MEKO) is used in the synthesis of waterborne polyurethane resin and organic synthesis.
Butanone oxime (MEKO) is used Adhesives and sealant chemicals.
Butanone oxime (MEKO) is used paint additives and coating additives not described by other categories.

Butanone oxime (MEKO) is used solvents (which become part of product formulation or mixture.
Butanone oxime (MEKO) is mainly used as an anti-scaling agent and silicone-curing agent for alkyd resin coatings.
Butanone oxime (MEKO) is used as an antioxidant to prevent scaling and has better effects than butyraldehyde oxime and cyclohexanone oxime.

Butanone oxime (MEKO) is widely used as solvent for protective coatings and paints.
Butanone oxime (MEKO) is particularly used in alkyd paints.
Butanone oxime (MEKO) functions by binding the drying agents, metal salts that catalyze the oxidative crosslinking of drying oils.

Once the paint is applied to a surface, Butanone oxime (MEKO) evaporates, thereby allowing the drying process to proceed.
Other antiskinning agents have been used, including phenolic antioxidants (E.G butylated hydroxytoluene), but these tend to yellow the paint.
Butanone oxime (MEKO) is also used in some types of RTV silicones.

Butanone oxime (MEKO) is primarily used as an anti-skinning agent in paint.
Butanone oxime (MEKO) has additional uses in the production of silicone adhesive products.
Butanone oxime (MEKO) is a substance used to prevent the skinning of some solvent-borne paints in the container or prior to use.

Once the paint is applied to a surface, the Butanone oxime (MEKO) evaporates, thereby allowing the drying process to proceed.
Historically, Butanone oxime (MEKO) has been used by the industry for many years as it is a very effective anti-skinning agent.
Butanone oxime (MEKO) was employed as reagent and solvent in the syntheses of ketoimine and 2,4-dipyridyl-1,3,5-triazapentadiene palladium(II) complexes.

Butanone oxime (MEKO) was also used in the synthesis of novel acetaldiimine cobalt complex, [CoI2{((CH3CH2)(CH3)C=NO)2C(CH3)2}].
Butanone oxime (MEKO) is used primarily as an antiskinning agent in alkyd coating resins.
Butanone oxime (MEKO) is mainly used as anti-skinning agent and silicon curing agent for alkyd resin coatings.

Butanone oxime (MEKO) is used as an antioxidant to prevent skin formation, which is better than butyraldehyde oxime and cyclohexanone oxime.
used in organic synthesis.
Butanone oxime (MEKO) is used 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.

-IN PAINT INDUSTRY uses of Butanone oxime (MEKO):
Butanone oxime (MEKO), as it is called in the paint industry, is used to suppress “skinning” of paints: the formation of a skin on paint before it is used, hence is a popular anti-skinning agent.

Skinning is the biggest nuisance in protective coatings.
Skinning causes the avoidable waste of a costly coating material.

Paint containers are not always filled to the brim.
So air present in a void reacts with the paint, thereby causing oxidation and polymerization of the coating at the air/paint interface.

This results in formation of a solid skin during storage.
The lost of paint due to skinning is estimated to be as much as 3 to 5%.

This not only worries the consumers but also the manufacturers when it comes to filling of small containers.
The minute doze of an effective anti-skinning agent can alleviate the difficulty of skinning.

-Chemical property of Butanone oxime (MEKO) which is useful in paint industry :-
Butanone oxime (MEKO) functions by binding the drying agents, metal salts that catalyze the oxidative crosslinking of drying oils.
Once the paint is applied to a surface, Butanone oxime (MEKO) evaporates, thereby allowing the drying process to proceed.
Other antiskinning agents have been used, including phenol-based antioxidants, but these tend to yellow the paint.

CHEMICAL PROPERTIES of BUTANONE OXIME (MEKO):
Butanone oxime (MEKO) is a colorless or light yellow oily transparent liquid that has strong complexation with metal ions and is volatile in the air.
Butanone oxime (MEKO) can react with hydrochloric acid and sulfuric acid to form methyl ethyl ketone.

PREPARATION of BUTANONE OXIME (MEKO):
Butanone oxime (MEKO) is obtained by the reaction of butanone and hydroxylamine hydrochloride.
Butanone oxime (MEKO) can also be synthesized by the reaction between butanone and hydroxylamine sulfate.

BUTANONE OXIME (MEKO) MARKET OUTLOOK
The global Butanone oxime (MEKO) market size was valued at approximately USD 200 million in 2023 and is projected to reach around USD 320 million by 2032, growing at a compound annual growth rate (CAGR) of 5.3% during the forecast period.
One of the significant growth factors driving this market is the increasing demand for Butanone oxime (MEKO) in the paints and coatings industry, which is driven by the expanding construction and automotive sectors.

The growing construction industry is a primary driver for the Butanone oxime (MEKO) market.
As construction activities surge globally, particularly in emerging economies, the demand for paints and coatings, which use Butanone oxime (MEKO) as an anti-skinning agent, has been on the rise.

Butanone oxime (MEKO) helps in preventing the formation of skin on the surface of paints, thereby enhancing the shelf life and usability of paint products.
Moreover, the increasing trend of urbanization and infrastructure development projects are further propelling the market growth.

PREPARATION of BUTANONE OXIME (MEKO):
With suitable precautions, to 1 liter of the sodium hydroxylamine di­sulfonate 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, Butanone oxime (MEKO) 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%).

BUTANONE OXIME (MEKO) MARKET:
Butanone oxime (MEKO) Consumption Market is very important to many industries since it provides important solutions that make operations easier, boost productivity, and help businesses develop over time.
Butanone oxime (MEKO) Consumption Market is growing quickly because there is a greater need throughout the world for operational efficiency, cost optimisation, and making decisions based on data.

Key areas of the Butanone oxime (MEKO) Consumption Market are changing because of changing rules, changing customer tastes, and new technologies.
There is more and more demand in adaptive and resilient Butanone oxime (MEKO) Consumption Market solutions because of the increased focus on sustainability and risk management, especially after recent global catastrophes.

The Butanone oxime (MEKO) market is witnessing steady growth driven by its wide applications, mainly in the coatings and paints industry as an efficient anti-skinning agent.
Butanone oxime (MEKO) helps prevent premature drying during storage, improving the shelf life and usability of paint products.

The global demand has been increasing due to the expanding construction and automotive sectors where coatings are extensively used.
Additionally, Butanone oxime (MEKO) finds usage in industrial chemicals and adhesives due to its stabilization properties.
The market size in 2025 is projected at approximately $235 million, with steady advancements anticipated through 2033.

The industry is marked by moderate competition, with manufacturers focusing on product purity and environmental compliance.
Increasing urbanization, infrastructure development, and rising disposable incomes in emerging economies also contribute positively.
However, strict regulations on chemical safety and environmental precautions influence market strategies.

Continuous innovation in formulation and production technologies is key to sustaining growth.
The detailed segmentation covers product types, purity levels, application areas including construction, automotive, adhesives, and regional divisions that highlight the demand variances among different markets.

BENEFITS & CHARACTERISTICS of BUTANONE OXIME (MEKO):
*Improves paint stability:
Butanone oxime (MEKO) prevents premature “skin” formation.

*Volatile:
Butanone oxime (MEKO) evaporates after application, minimizing interference with drying.

*Versatile additive:
Butanone oxime (MEKO) is compatible with multiple formulation types.

BUTANONE OXIME (MEKO) OXYGEN SCAVENGER:
Oxime compounds (dimethyl ketone oxime, methyl ethyl ketoxime (Butanone oxime (MEKO)), 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.

OXYGEN SCAVENGING PERFORMANCE of BUTANONE OXIME (MEKO):
An 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.

CORROSION AND PASSIVATION of BUTANONE OXIME (MEKO):
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.

 
VOLATILE of BUTANONE OXIME (MEKO):
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.

DECOMPOSITION of BUTANONE OXIME (MEKO):
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.

PHYSICAL and CHEMICAL PROPERTIES of BUTANONE OXIME (MEKO):
Molecular Weight: 87.12 g/mol
XLogP3-AA: 0.7
Hydrogen Bond Donor Count: 1
Hydrogen Bond Acceptor Count: 2
Rotatable Bond Count: 1
Exact Mass: 87.068413911 g/mol
Monoisotopic Mass: 87.068413911 g/mol
Topological Polar Surface Area: 32.6 Ų
Heavy Atom Count: 6
Formal Charge: 0

Complexity: 58.6
Isotope Atom Count: 0
Defined Atom Stereocenter Count: 0
Undefined Atom Stereocenter Count: 0
Defined Bond Stereocenter Count: 1
Undefined Bond Stereocenter Count: 0
Covalently-Bonded Unit Count: 1
Compound Is Canonicalized: Yes
CAS Number: 96-29-7
Molecular Weight: 87.12
Beilstein: 1698241
EC Number: 202-496-6

MDL number: MFCD00013935
Appearance: Colorless, clean, oily liquid
Purity: 99.5% min
pH Value: 7-8
Melting Point: -29.5°C
Boiling Range: 144-153°C
Refractive Index: 1.4410
Relative Vapour Density: 3.00
Specific Gravity: 0.78
Flash Point: 69°C
Physical state: Clear, liquid
Color: Colorless

Odor: No data available
Melting point/freezing point: -29.5°C (OECD Test Guideline 102)
Initial boiling point and boiling range:
59-60°C at 20 hPa (literature)
151-152°C at 1.013 hPa (literature)
Flammability (solid, gas): No data available
Upper/lower flammability or explosive limits: No data available
Flash point: 61.97°C (closed cup)
Autoignition temperature: 314-317°C
Decomposition temperature: No data available
pH: No data available

Viscosity:
Kinematic viscosity: No data available
Dynamic viscosity: Approximately 15 mPa.s at 20°C
Water solubility: Approximately 100 g/l at 25°C
Partition coefficient (n-octanol/water): Approximately log Pow: 0.63
Vapor pressure: Less than 10 hPa at 20°C
Density: 0.924 g/cm3 at 25°C (literature)
Relative density: 0.92 at 20°C
Relative vapor density: 3.01 (Air = 1.0)

Particle characteristics: No data available
Explosive properties: No data available
Oxidizing properties: No data available
Other safety information: 
Dissociation constant approximately 12.45 at 25°C, 
Relative vapor 3.01 (Air = 1.0)
Melting point: -30°C
Boiling point: 59-60°C at 15 mm Hg (literature)
Density: 0.924 g/mL at 25°C (literature)

Vapor density: 3 (vs air)
Vapor pressure: <8 mm Hg at 20°C
Refractive index: n20/D 1.442 (literature)
Flash point: 140°F
Solubility: Water soluble, 100g/L at 25°C
Form: Liquid
pKa: pK1: 12.45 (25°C)
Color: Clear colorless to pale yellow
Water Solubility: 114 g/L at 20°C

BRN: 1698241
Dielectric constant: 3.4 (20°C)
Stability: Stable
InChIKey: WHIVNJATOVLWBW-SNAWJCMRSA-N
LogP: 0.63 at 25°C
CAS DataBase Reference: 96-29-7 (CAS DataBase Reference)
EWG's Food Scores: 4
FDA UNII: 51YGE935U9
NIST Chemistry Reference: 2-Butanone, oxime (96-29-7)
EPA Substance Registry System: Methyl ethyl ketoxime (96-29-7)

CBNumber:CB3393662
Molecular Formula:C4H9NO
Molecular Weight:87.12
MDL Number:MFCD00013935
MOL File:96-29-7.mol
Melting point:-30 °C
Boiling point:59-60 °C15 mm Hg(lit.)
Density:0.924 g/mL at 25 °C(lit.)
vapor density:3 (vs air)

vapor pressure:<8 mm Hg ( 20 °C)
refractive index:n20/D 1.442(lit.)
Flash point:140 °F
solubility:water: soluble100g/L at 25°C
form:Liquid
pka:pK1:12.45 (25°C)
color:Clear colorless to pale yellow
Odor:Musty odor
Water Solubility:114 g/L (20 ºC)
BRN:1698241

Dielectric constant:3.4（20℃）
Stability:Stable. 
Incompatible with strong oxidizing agents. 
May react with strong acids to form an explosive material.
InChIKey:WHIVNJATOVLWBW-SNAWJCMRSA-N
LogP:0.63 at 25℃
CAS DataBase Reference:96-29-7(CAS DataBase Reference)
EWG's Food Scores:4
FDA UNII:51YGE935U9

NIST Chemistry Reference:2-Butanone, oxime(96-29-7)
EPA Substance Registry System:Methyl ethyl ketoxime (96-29-7)
Appearance:Colourless to pale yellow liquid
Odor:Musty / Slightly pungent
Density (25 °C):~0.923–0.924 g/cm³
Boiling Point:~152–152.5 °C (at 760 mmHg)
Melting Point:~-30 °C
Vapor Pressure:~1.88 mmHg @ 25 °C (est.)
Refractive Index:~1.442 nD
Water Solubility:~100–114 g/L @ 20–25 °C

Flash Point:~60 °C (140 °F)
Vapor Density:~3 (heavier than air)
logP (octanol/water):~0.63
Chemical formula:C4H9NO
Appearance:colourless liquid
Density:0.923 g/cm3
Melting point:−15 °C (5 °F; 258 K)
Boiling point:152 °C (306 °F; 425 K)
Molecular Weight:87.12 g/mol
XLogP3-AA:0.7

Hydrogen Bond Donor Count:1
Hydrogen Bond Acceptor Count:2
Rotatable Bond Count:1
Exact Mass:87.068413911 Da
Monoisotopic Mass:87.068413911 Da
Topological Polar Surface Area:32.6 Ų
Heavy Atom Count:6
Formal Charge:0
Complexity:58.6
Isotope Atom Count:0
Defined Atom Stereocenter Count:0
Undefined Atom Stereocenter Count:0

Defined Bond Stereocenter Count:0
Undefined Bond Stereocenter Count:1
Covalently-Bonded Unit Count:1
Compound Is Canonicalized:Yes
Linear Formula:C2H5C(=NOH)CH3
CAS Number:96-29-7
Molecular Weight:87.12
UNSPSC Code:12352100
NACRES:NA.22
PubChem Substance ID:24860083
EC Number:202-496-6
Beilstein/REAXYS Number:1698241
MDL number:MFCD00013935

FIRST AID MEASURES of BUTANONE OXIME (MEKO):
-Description of first-aid measures:
*General advice:
Show this material safety data sheet to the doctor in attendance.
*If inhaled:
After inhalation: 
Fresh air. 
Immediately call in physician. 
*In case of skin contact: 
Take off immediately all contaminated clothing. 
Rinse skin with water/ shower. 
Call a physician immediately.
*In case of eye contact:
After eye contact: 
Rinse out with plenty of water. 
Immediately call in ophthalmologist.
Remove contact lenses.
*If swallowed: 
vice immediately.
-Indication of any immediate medical attention and special treatment needed:
No data available

ACCIDENTAL RELEASE MEASURES of BUTANONE OXIME (MEKO):
-Environmental precautions:
Do not let product enter drains.
-Methods and materials for containment and cleaning up:
Cover drains. 
Collect, bind, and pump off spills. 
Observe possible material restrictions. 
Take up carefully with liquid-absorbent material. 
Dispose of properly. 
Clean up affected area.

FIRE FIGHTING MEASURES of BUTANONE OXIME (MEKO):
-Extinguishing media:
*Suitable extinguishing media:
Carbon dioxide (CO2) 
Foam 
Dry powder
*Unsuitable extinguishing media:
For this substance/mixture no limitations of extinguishing agents are given.
-Further information:
Remove container from danger zone and cool with water. Suppress (knock down) gases/vapors/mists with a water spray jet. 
Prevent fire extinguishing water from contaminating surface water or the ground water system.

EXPOSURE CONTROLS/PERSONAL PROTECTION of BUTANONE OXIME (MEKO):
-Control parameters:
--Ingredients with workplace control parameters:
-Exposure controls:
--Personal protective equipment:
*Eye/face protection:
Use equipment for eye protection. 
Tightly fitting safety goggles
*Skin protection:
Full contact:
Material: Nitrile rubber
Minimum layer thickness: 0,4 mm
Break through time: 480 min
Splash contact
Material: Nitrile rubber
Minimum layer thickness: 0,11 mm
Break through time: 30 min
*Body Protection:
protective clothing
*Respiratory protection:
Recommended Filter type: Filter A-(P3)
-Control of environmental exposure:
Do not let product enter drains.

HANDLING and STORAGE of BUTANONE OXIME (MEKO):
-Precautions for safe handling:
*Advice on safe handling:
Work under hood.
*Advice on protection against fire and explosion:
Take precautionary measures against static discharge.
*Hygiene measures:
Immediately change contaminated clothing. 
Apply preventive skin protection. 
Wash hands and face after working with substance.
-Conditions for safe storage, including any incompatibilities:
*Storage conditions:
Tightly closed. 
Keep in a well-ventilated place. 
Keep locked up or in an area accessible only to qualified or authorized persons.

STABILITY and REACTIVITY of BUTANONE OXIME (MEKO):
-Chemical stability:
The product is chemically stable under standard ambient conditions (room temperature) .