Methyl ethyl ketone oxime
CAS 96-29-7
EC 202-496-6
Formula C4H9NO
MW 87.12 g/mol
Catalysts & Catalyst Precursors Coatings, Adhesives, Sealants & ElastomersPrinting & Packaging CatalysisFlavoring & Acidulant
Description
Methyl ethyl ketone oxime (CAS 96-29-7) is an organic compound commercially known under trade names including Exkin 2, Exkin II, Aron M 1, and 2-Butoxime, with the abbreviation MEK-oxime also in common use. It carries no E-code designation and is registered under EC number 202-496-6.
In solvent-based coatings and alkyd paints, MEK-oxime functions as an anti-skinning agent by temporarily blocking the metal drier catalysts that trigger surface oxidation, preventing premature film formation in the can. It also serves as a crosslinker and catalyst precursor in moisture-cure silicone sealants and adhesives, where it releases upon exposure to atmospheric moisture to initiate cure.
MEK-oxime is supplied as a liquid under HS code 29280090 and is subject to REACH registration requirements within the EU. Procurement teams should verify SDS compliance and confirm supplier registration status, as the substance has been subject to regulatory scrutiny regarding classification under CLP.
In solvent-based coatings and alkyd paints, MEK-oxime functions as an anti-skinning agent by temporarily blocking the metal drier catalysts that trigger surface oxidation, preventing premature film formation in the can. It also serves as a crosslinker and catalyst precursor in moisture-cure silicone sealants and adhesives, where it releases upon exposure to atmospheric moisture to initiate cure.
MEK-oxime is supplied as a liquid under HS code 29280090 and is subject to REACH registration requirements within the EU. Procurement teams should verify SDS compliance and confirm supplier registration status, as the substance has been subject to regulatory scrutiny regarding classification under CLP.
Physical Properties
| Melting Point | -29.5 °C |
| Boiling Point | 149-151 °C |
| Density | 0.9232 g/cm³ @ Temp: 80 °C |
| Flash Point | 140 °F |
| Appearance | colourless liquid |
| Color | Clear colorless to pale yellow |
| Odor | Musty odor |
| Form | Liquid |
| Water Solubility | 114 g/L (20 ºC) |
| Vapor Pressure | <8 mm Hg ( 20 °C) |
| Refractive Index | n 20/D 1.442(lit.) |
| Log P | 0.63 at 25℃ |
Safety & Handling (Learn More)
Danger GHS05 GHS06 GHS08 GHS07
H
H301H302H311H312H315H317H318H336H350H351H370H372H373H402H412
P
P203P260P261P262P264P270P271P272P273P280P316P317P318P319P321P330P405P501P264+P265P301+P316P301+P317P302+P352P304+P340P308+P316P332+P317P333+P317P361+P364P362+P364P403+P233P305+P354+P338
Trade & Regulatory
| HS Code | 29280090 |
| UN Number | 1993 |
| ADR Class | 3 |
| Packing Group | III |
| WGK (Germany) | 1 |
Other Names
N-Butan-2-Ylidenehydroxylamine(EZ)-Methylethyl ketone oximeMEKOExkin 2Exkin IIAron M 1MEK-oxime2-ButoximeBUTANONE OXIME
Related Products
Raw Materials
Derivatives
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