Methylethyl ketone oxime

Methylethyl ketone oxime
Other names MEKO
Properties
Molecular formula	C4H9NO
Appearance	colourless liquid
Density	0.923 g/cm3
Melting point	-15 °C
Boiling point	152 °C
Y (verify) (what is: Y/N?) Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa)
Infobox references

Methylethyl ketone oxime is the organic compound with the formula C₂H₅C(NOH)CH₃. This colourless liquid is the oxime derivative of methyl ethyl ketone. 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. 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, 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.^[1]

Reference

1. ^ J. Bielman "Antiskinning Agents" in "Additives for Coatings" J. H. Bielman, Ed. Wiley-VCH, 2000, Weinheim. ISBN 3527297855.