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METHYL ISOBUTYL KETONE (MIBK)
 
DOT ID:
METHYL ISOBUTYL KETONE  3  UN1245  PG: II  FLAMMABLE LIQUID
 
C.A.S. Number: 108-10-1
 
  • FLAMMABLE LIQUID
 
NFPA 704:
  • Red 3        -- Flammability: Ignites at normal temperatures
  • Blue 1        -- Health Hazard: Slightly hazardous
  • Yellow 0     -- Reactivity: Normally stable
 
General Description
A clear colorless liquid with a pleasant odor. Flash point 73°F. Less dense than water. Vapors heavier than air.
 
Hazards
 
Reactivity Alerts
 
  • Highly Flammable
  • Peroxidizable Compound
 
Air & Water Reactions
Highly flammable. This chemical is sensitive to air (may form explosive peroxides). Slightly soluble in water.
 
Fire Hazard
Special Hazards of Combustion Products: Irritating vapors are generated when heated.

Behavior in Fire: Vapors may travel a considerable distance and ignite. (USCG, 1999)
 
Health Hazard
Vapor causes irritation of eyes and nose; high concentrations cause anesthesia and depression. Liquid dries out skin and may cause dermatitis; irritates eyes but does not injure them. (USCG, 1999)
 
Reactivity Profile
METHYL ISOBUTYL KETONE is incompatible with caustic soda and other strong alkalis, hydrochloric acid, sulfuric acid and other strong inorganic acids, amines and oxidizing agents such as hydrogen peroxide, nitric acid, perchloric acid and chromium trioxide. It reacts violently with potassium tert-butoxide. It reacts vigorously with reducing materials. (NTP, 1992).
 
Belongs to the Following Reactive Group(s)
 
 
Firefighting
 
Do not extinguish fire unless flow can be stopped. Use water in flooding quantities as fog. Solid streams of water may be ineffective. Cool all affected containers with flooding quantities of water. Apply water from as far a distance as possible. Use "alcohol" foam, dry chemical or carbon dioxide. (AAR, 2003)
 
Non-Fire Response
Keep sparks, flames, and other sources of ignition away. Keep material out of water sources and sewers. Build dikes to contain flow as necessary. Attempt to stop leak if without undue personnel hazard. Use water spray to disperse vapors and dilute standing pools of liquid. (AAR, 2003)
 
Protective Clothing
Skin: Wear appropriate personal protective clothing to prevent skin contact.

Eyes: Wear appropriate eye protection to prevent eye contact.

Wash skin: The worker should immediately wash the skin when it becomes contaminated.

Remove: Work clothing that becomes wet should be immediately removed due to its flammability hazard(i.e. for liquids with flash point < 100°F)

Change: No recommendation is made specifying the need for the worker to change clothing after the work shift. (NIOSH, 2003) Copyrighted information of E.I. du Pont de Nemours and Company. Tychem® is a registered trademark of E.I. du Pont de Nemours and Company.
 
First Aid
EYES: First check the victim for contact lenses and remove if present. Flush victim's eyes with water or normal saline solution for 20 to 30 minutes while simultaneously calling a hospital or poison control center. Do not put any ointments, oils, or medication in the victim's eyes without specific instructions from a physician. IMMEDIATELY transport the victim after flushing eyes to a hospital even if no symptoms (such as redness or irritation) develop.

SKIN: IMMEDIATELY flood affected skin with water while removing and isolating all contaminated clothing. Gently wash all affected skin areas thoroughly with soap and water. If symptoms such as redness or irritation develop, IMMEDIATELY call a physician and be prepared to transport the victim to a hospital for treatment.

INHALATION: IMMEDIATELY leave the contaminated area; take deep breaths of fresh air. If symptoms (such as wheezing, coughing, shortness of breath, or burning in the mouth, throat, or chest) develop, call a physician and be prepared to transport the victim to a hospital. Provide proper respiratory protection to rescuers entering an unknown atmosphere. Whenever possible, Self-Contained Breathing Apparatus (SCBA) should be used; if not available, use a level of protection greater than or equal to that advised under Protective Clothing.

INGESTION: DO NOT INDUCE VOMITING. If the victim is conscious and not convulsing, give 1 or 2 glasses of water to dilute the chemical and IMMEDIATELY call a hospital or poison control center. Be prepared to transport the victim to a hospital if advised by a physician. If the victim is convulsing or unconscious, do not give anything by mouth, ensure that the victim's airway is open and lay the victim on his/her side with the head lower than the body. DO NOT INDUCE VOMITING. IMMEDIATELY transport the victim to a hospital. (NTP, 1992)
 
 
Physical Properties
 
Molecular Formula:
  • C6H12O
 
Flash Point:                          73.0 ° F (NTP, 1992)
Lower Explosive Limit:              1.4 % (NTP, 1992)
Upper Explosive Limit:              7.5 % (NTP, 1992)
Autoignition Temperature:     854.0 ° F (USCG, 1999)
Melting Point:                    -120.5 ° F (NTP, 1992)
Vapor Pressure:                      5.0 mm Hg at 67.5 ° F ;
                                          10.0 mm Hg at 86.0° F (NTP, 1992)
Vapor Density:                        3.45 (NTP, 1992)
Specific Gravity:                      0.802 at 68.0 ° F (USCG, 1999)
Boiling Point:                       243-244 ° F at 760 mm Hg (NTP, 1992)
Molecular Weight:                 100.16 (NTP, 1992)
Water Solubility:                     1-5 mg/mL at 70° F (NTP, 1992)
AEGL:                                 data unavailable
ERPG:                                 data unavailable
 
TEEL-1        TEEL-2      TEEL-3
75.0 ppm      75.0 ppm    500.0 ppm                                 (SCAPA, 2008)
IDLH:           500.0 ppm                                                  (NIOSH, 2003)
 
 Regulatory Information
 
Regulatory Names:
  • METHYL ISOBUTYL KETONE
 
CAA RMP:                Not a regulated chemical.
CERCLA:                  Regulated chemical with a Reportable Quantity of 5000 pounds.
EHS (EPCRA 302):    Not a regulated chemical.
TRI (EPCRA 313):      Regulated chemical.
RCRA Chemical Code: U161
 
 
Alternate Chemical Names
 
 
  • 2-METHYL-4-PENTANONE
  • 2-METHYLPROPYL METHYL KETONE
  • 2-PENTANONE, 4-METHYL-
  • 4-METHYL 2-PENTANONE
  • 4-METHYL-2-OXOPENTANE
  • 4-METHYL-2-PENTANONE
  • HEXONE
  • ISOBUTYL METHYL KETONE
  • ISOBUTYL METHYL KETONE {METHYL ISOBUTYL KETONE}
  • ISOPROPYL ACETONE
  • ISOPROPYLACETONE
  • KETONE, ISOBUTYL METHYL
  • METHYL 2-METHYLPROPYL KETONE
  • METHYL ISO-BUTYL KETONE
  • METILISOBUTILCETONA (DOT SPANISH)
  • MIBK
  • MIK
  • MÉTHYLISOBUTYLCÉTONE (DOT FRENCH)
  • RCRA WASTE NUMBER U161
  • SHELL MIBK
  • UN 1245
 
 
Information obtained from:
Cameo Chemicals
Emergency Response Division, Office of Response and Restoration. National Ocean Service, National Oceanic and Atmospheric Administration
 
July 29, 2011