Methyl+ethyl+ketone

Methyl Ethyl Ketone (MEK) is an organic compound with the formulation CH3C(O)CH2CH3. Methyl Ethyl Ketone is also known as Butanone, MEK, and Methyl acetone. MEK has a sharp, sweet order reminiscent of butterscotch and acetone. Although produced in large scale industrially, it occurs naturally in trace amounts. It is found in some fruits and vegetables, and is released into the air from car and truck exhausts. MEK‘s use is primarily as a solvent and is used in processes involving gums, resins, cellulose acetate and nitrocellulose coatings and in final films. It is used in the embalming practice in removing paints, varnishes, and polishes. Other uses include the manufacturing of plastics, textiles, paraffin wax, and in household products such as lacquer, varnishes, paint remover, and glues. We see MEK used every day at school; it is the solvent used in dry erase markers for the erasable dyes. MEK is an irritant, but serious health effects in animals have been seen only at very high levels. When inhaled, these effects include birth defects. Inhalation causes irritation to the nose and throat. High concentrations may cause headache, dizziness, nausea, shortness of breath, and vomiting. Even higher concentrations may cause central nervous system depression and unconsciousness. Skin contact causes irritation. Symptoms include redness, itching, and pain, and may be absorbed through the skin with possible systemic effects. Personal Protection Equipment should, as a minimum, include Goggles & shield, lab coat and apron, vent hood, and proper gloves The Permissible Exposure Limit (PEL) of MEK is 200ppm (TWA), and the Threshold Limit Value (TVL) is 200ppm.