METHYL ETHYL KETOXIME

Methyl Ethyl Ketoxime is an oxime compound widely used as an anti-skinning agent, curing blocker, and stabilizer in paints, coatings, sealants, and polyurethane systems.
Methyl Ethyl Ketoxime prevents premature surface curing in alkyd paints, improving storage stability and maintaining product workability.
Methyl Ethyl Ketoxime is also used as an isocyanate-blocking agent in polyurethane prepolymers, enabling controlled curing during application.
Methyl Ethyl Ketoxime is highly effective in oxime-cure silicone sealants, providing reliable moisture-curing mechanisms.

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

Synonyms: MEKO, 2-Butanone Oxime, Butanone Oxime, MEK Oxime, Methyl Ethyl Ketone Oxime, Anti-skinning agent MEKO, Polyurethane blocking agent, Oxime-cure silicone component, Alkyd stabilizer, Moisture-curing oxime additive, Methyl Ethyl Ketoxime, MEKO, 2-Butanone Oxime, Butanone Oxime, Ethyl Methyl Ketoxime, Ethyl Methyl Ketone Oxime, Oxime of Methyl Ethyl Ketone, MEK Oxime, Methyl Ethyl Ketone Oxime, Butan-2-one Oxime, Ethyl Methyl Oxime, Ethyl Methyl Ketoxime Stabilizer, MEKO Anti-Skinning Agent, MEKO Anti-Skin Agent, MEKO Anti-Skin Additive, MEKO Paint Additive, MEKO Coating Additive, MEKO Sealant Additive, MEKO Silicone Sealant Additive, MEKO Polymer Stabilizer, MEKO Crosslinking Inhibitor, MEKO Surface Film Inhibitor, MEKO Skin Preventer, MEKO Drier Suppressant, MEKO Oxime, Ketoxime MEKO, Industrial MEKO, Technical Grade MEKO, Industrial Grade Methyl Ethyl Ketoxime, Technical Grade Methyl Ethyl Ketoxime, High Purity MEKO, Pure MEKO, Extra Pure MEKO, Methyl Ethyl Ketoxime 99%, Methyl Ethyl Ketoxime Stabilizer, MEKO For Alkyd Coatings, MEKO For Paints, MEKO For Sealants, MEKO For Adhesives, MEKO For Coatings, MEKO Raw Material, MEKO Chemical, MEKO Compound, MEKO Industrial Product, MEKO Fine Chemical, MEKO Specialty Chemical, MEKO Functional Additive, MEKO Anti-Film Additive, MEKO Anti-Oxidation Additive, Methyl Ethyl Ketoxime Anti-Skinning Agent, Methyl Ethyl Ketoxime Coating Stabilizer, Methyl Ethyl Ketoxime Drier Inhibitor, Methyl Ethyl Ketoxime Paint Stabilizer, Methyl Ethyl Ketoxime Sealant Stabilizer, MEKO Blocking Agent, MEKO Crosslink Blocker, MEKO Urethane Blocking Agent, MEKO Silicone Curing Modulator, MEKO Adhesive Curing Inhibitor, MEKO Protective Additive, MEKO Industrial Solvent Additive, Methyl Ethyl Ketoxime Technical Product, Methyl Ethyl Ketoxime Industrial Material.

APPLICATIONS

Methyl Ethyl Ketoxime is used in alkyd paints to prevent skin formation.
Methyl Ethyl Ketoxime improves long-term storage stability of solvent-based coatings.
Methyl Ethyl Ketoxime inhibits premature oxidative drying on container surfaces.

Methyl Ethyl Ketoxime is used in polyurethane systems as a blocking agent.
Methyl Ethyl Ketoxime temporarily inactivates isocyanate groups.
Methyl Ethyl Ketoxime allows one-component moisture-curing PU formulations.

Methyl Ethyl Ketoxime is used in oxime-cure silicone sealants.
Methyl Ethyl Ketoxime acts as a moisture-curing functional component.
Methyl Ethyl Ketoxime improves elasticity and adhesion of sealants.

Methyl Ethyl Ketoxime is used in adhesives requiring controlled reactivity.
Methyl Ethyl Ketoxime prevents premature gelation during storage.
Methyl Ethyl Ketoxime enhances open time and application window.

Methyl Ethyl Ketoxime is used in industrial coatings and primers.
Methyl Ethyl Ketoxime improves flow, leveling, and film uniformity.
Methyl Ethyl Ketoxime reduces surface defects caused by early curing.

Methyl Ethyl Ketoxime is used in printing inks.
Methyl Ethyl Ketoxime enhances stability and prevents thickening.
Methyl Ethyl Ketoxime supports uniform ink-drying characteristics.

Methyl Ethyl Ketoxime is used in moisture-curing polymer systems.
Methyl Ethyl Ketoxime enables delayed curing until application.
Methyl Ethyl Ketoxime supports controlled reaction profiles.

Methyl Ethyl Ketoxime is used as a formulation stabilizer.
Methyl Ethyl Ketoxime prevents oxygen-based degradation in storage.
Methyl Ethyl Ketoxime improves long-term reliability of reactive mixtures.

Methyl Ethyl Ketoxime is used in metal-protective coatings.
Methyl Ethyl Ketoxime enhances gloss retention and surface smoothness.
Methyl Ethyl Ketoxime ensures consistent drying kinetics.

Methyl Ethyl Ketoxime is used in polymer modification.
Methyl Ethyl Ketoxime provides temporary deactivation of reactive groups.
Methyl Ethyl Ketoxime improves manufacturing safety in reactive polymer production.

Methyl Ethyl Ketoxime is used as an anti-skinning agent in alkyd paints.
Methyl Ethyl Ketoxime prevents premature skin formation during paint storage.
Methyl Ethyl Ketoxime extends shelf life of solventborne coatings.

Methyl Ethyl Ketoxime is used in industrial coatings.
Methyl Ethyl Ketoxime stabilizes oxidative curing systems.
Methyl Ethyl Ketoxime improves workability of metal coatings.

Methyl Ethyl Ketoxime is used in wood coatings.
Methyl Ethyl Ketoxime prevents surface film formation in varnishes.
Methyl Ethyl Ketoxime supports uniform drying in alkyd-based lacquers.

Methyl Ethyl Ketoxime is used in polyurethane formulations.
Methyl Ethyl Ketoxime acts as a moisture scavenger in PU sealants.
Methyl Ethyl Ketoxime improves curing control in urethane adhesives.

Methyl Ethyl Ketoxime is used in silicone sealants.
Methyl Ethyl Ketoxime accelerates the curing process of oxime-cure silicones.
Methyl Ethyl Ketoxime improves mechanical performance of silicone sealants.

Methyl Ethyl Ketoxime is used in adhesive formulations.
Methyl Ethyl Ketoxime controls viscosity stability in reactive adhesives.
Methyl Ethyl Ketoxime enhances shelf stability of moisture-reactive systems.

Methyl Ethyl Ketoxime is used in printing inks.
Methyl Ethyl Ketoxime prevents skinning in ink reservoirs and trays.
Methyl Ethyl Ketoxime improves print quality by preventing premature drying.

Methyl Ethyl Ketoxime is used in metalworking fluids.
Methyl Ethyl Ketoxime acts as a corrosion inhibitor in certain fluid systems.
Methyl Ethyl Ketoxime improves long-term stability of water-based fluids.

Methyl Ethyl Ketoxime is used in epoxy coatings.
Methyl Ethyl Ketoxime enhances pot life by reducing unwanted oxidative reactions.
Methyl Ethyl Ketoxime helps maintain gloss in cured epoxy films.

Methyl Ethyl Ketoxime is used as a blocking agent in isocyanate chemistry.
Methyl Ethyl Ketoxime temporarily blocks reactive NCO groups.
Methyl Ethyl Ketoxime enables controlled curing in polyurethane production.

Methyl Ethyl Ketoxime is used in corrosion-resistant coatings.
Methyl Ethyl Ketoxime supports long-term stability of anti-corrosive primers.
Methyl Ethyl Ketoxime prevents unwanted polymerization during storage.

Methyl Ethyl Ketoxime is used in alkyd resin manufacturing.
Methyl Ethyl Ketoxime helps maintain resin fluidity during production.
Methyl Ethyl Ketoxime minimizes oxidation during high-temperature processes.

Methyl Ethyl Ketoxime is used in the production of flexible sealants.
Methyl Ethyl Ketoxime supports elasticity by controlling premature curing.
Methyl Ethyl Ketoxime enhances smooth application properties.

Methyl Ethyl Ketoxime is used in marine coatings.
Methyl Ethyl Ketoxime prevents surface defects in long-oil alkyd coatings.
Methyl Ethyl Ketoxime supports durability in coastal environments.

DESCRIPTION

Methyl Ethyl Ketoxime is a clear, colorless to pale yellow liquid with a mild oxime odor.
Methyl Ethyl Ketoxime evaporates moderately and participates in moisture-cure chemical reactions.
Methyl Ethyl Ketoxime is compatible with most solvents used in coatings and sealants.

Methyl Ethyl Ketoxime acts as an anti-skinning additive by inhibiting metal-catalyzed oxidative drying.
Methyl Ethyl Ketoxime decomposes during curing to release the oxime component.
Methyl Ethyl Ketoxime helps ensure smooth film formation and uniform surface quality.

Methyl Ethyl Ketoxime works reliably in a variety of resin systems.
Methyl Ethyl Ketoxime supports long-term storage without compromising final coating performance.
Methyl Ethyl Ketoxime is an essential additive in many moisture-curing industrial formulations.

Methyl Ethyl Ketoxime appears as a colorless to pale yellow liquid.
Methyl Ethyl Ketoxime has a mild, characteristic oxime odor.
Methyl Ethyl Ketoxime is soluble in organic solvents such as alcohols and ketones.

Methyl Ethyl Ketoxime is effective at very low concentrations.
Methyl Ethyl Ketoxime forms stable complexes with metal driers in alkyd paints.
Methyl Ethyl Ketoxime helps maintain product stability under long storage periods.

Methyl Ethyl Ketoxime should be handled with proper protective equipment.
Methyl Ethyl Ketoxime requires well-ventilated storage conditions.
Methyl Ethyl Ketoxime is widely used in coatings and sealants due to its strong anti-skinning performance.

PROPERTIES

Appearance: Clear to yellowish liquid
Odor: Mild oxime-like odor
Density: ~0.93 g/cm³
Boiling Point: ~152°C
Flash Point: ~62°C
Solubility: Slightly soluble in water; fully soluble in organic solvents
Reactivity: Blocks isocyanates; inhibits oxidative curing
Stability: Stable under normal storage; avoid oxidizing conditions

FIRST AID

Inhalation:
Move to fresh air.
Seek medical attention if irritation or discomfort occurs.

Skin Contact:
Wash thoroughly with soap and water.
Seek medical attention if irritation persists.

Eye Contact:
Rinse with plenty of water for 15 minutes.
Seek medical attention if irritation continues.

Ingestion:
Rinse mouth and do not induce vomiting.
Seek medical assistance if symptoms occur.

Note to Physicians:
Treat symptomatically; monitor for potential liver-related effects in significant exposures.

HANDLING AND STORAGE

Handling:
Use gloves, goggles, and appropriate protective clothing.
Avoid inhalation and direct skin contact.

Ventilation:
Use adequate ventilation or local exhaust during handling.

Avoidance:
Avoid heat, sparks, oxidizing agents, and contamination.
Keep containers closed when not in use.

Spill Procedures:
Absorb with inert material and collect for disposal.
Wash spill area with detergent solution.

Storage:
Store in tightly sealed containers in a cool, dry, well-ventilated area.
Protect from heat, sunlight, and sources of ignition.