Description:
Methyl isobutyl ketone (CAS# 108-10-1) is a colorless liquid that is used as a solvent for vinyl, epoxy, acrylic and natural resins, nitrocellulose, paints, varnishes, lacquers, protective coatings, rare metal extraction, and dyes. It is used as a denaturant for rubbing alcohol, a synthetic flavoring adjuvant, and a fruit flavoring. It is used in extracting uranium from fission products, dewaxing mineral oils, manufacturing antibiotics, dry-cleaning preparations, and the synthesis of methyl isobutyl carbinol. It occurs naturally in oranges, grapes, and vinegar.
Chemical properties:
Methyl isobutyl ketone has a faint ketonic and camphor odor. It is classified under the Clean Air Act as a volatile organic compound. It is moderately soluble in water, and soluble in alcohol, ether, acetone, benzene, and chloroform. It is miscible with most organic solvents. It is reactive or incompatible with strong oxidizers, potassium, and tert-butoxide. It is highly flammable and will be easily ignited by heat, sparks, or flame. Its vapors may form explosive mixtures with air and may travel to the source of ignition and flash back. The vapor may explode if ignited in an enclosed area. Most of its vapors are heavier than air, and its liquids are lighter than water. Methyl isobutyl ketone ignites on contact with potassium-t-butoxide. It can react vigorously with reducing materials. Synonyms for methyl isobutyl ketone include hexone, isobutyl methyl ketone, 4-methyl-2-pentanone, and isopropyl acetone.
Identification:
Chemical Name: Metyl Isobutyl Ketone
Regulatory Name: Methyl Isobutyl Ketone
Formula: (C6H12O)
DOT Label: Flammable Liquid
CAS: 108-10-1
STCC: 4909244
CHRIS: MIK
UN Number: 1245
Health effects:
Exposure to methyl isobutyl ketone may cause gastrointestinal disturbances and central nervous system impairment, headache, nausea, vomiting, and respiratory tract irritation. Chronic exposure may cause axonal neuropathy, paresthesia, and muscle weakness. Ingestion of methyl isobutyl ketone may cause central nervous system depression, respiratory depression, dyspnea, pulmonary aspiration, and corrosive effects. Inhalation may cause coma, nausea, headache, vertigo, incoordination, central nervous system depression, narcosis, dizziness, tremors, cardiorespiratory failure, and eye, nose, and throat irritation.
Exposure Values:
IDLH: 500 pp (NIOSH, 1997)
TLV TWA: 50 ppm (©ACGIH, 1999)
TLV STEL: 75 PPM (©ACGIH, 1999)
NIOSH REL: TWA 50 ppm (240 mg/m3)
OSHA PEL: TWA 100 ppm (475 mg/m3)
Economics:
U.S. manufacturers of methyl isobutyl ketone are :Eastman Kodak Company, Longview, TX; Shell Oil Company, Deer Park, TX; and Union Carbide Corporation, Institute, WV
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