3-Methylbutan-2-one

  • Methyl isopropyl ketone
  • 3-Methyl-2-butanone
  • 2-Acetyl propane
  • 3-Methylbutanone
Formula CH3COCH(CH3)2
Structure
Description Colorless liquid with an acetone-like odor.
Uses Often used as a solvent.

Registry Numbers and Inventories.
CAS 563-80-4
EC (EINECS/ELINCS) 209-264-3
EC Index Number 606-007-00-0
EC Class Highly flammable
EC Risk Phrase R 11
EC Safety Phrase S 9 16 33
RTECS EL9100000
RTECS class Mutagen; Primary Irritant
UN (DOT) 2397
Merck 12,6164
Beilstein/Gmelin 1071238
Beilstein Reference 4-01-00-03287
EPA OPP 44104
Swiss Giftliste 1 G-4316
Canada DSL/NDSL DSL
US TSCA Listed
Austrailia AICS Listed
New Zealand Listed
Japan ENCS (MITI) Listed
Korea ECL Listed

Properties.
Formula C5H10O
Formula mass 86.13
Melting point, °C -92
Boiling point, °C 94
Vapor pressure, mmHg 54 (25 C)
Vapor density (air=1) 3
Saturation Concentration Approximately 85,000 ppm (8.5%) at 20 C (calculated)
Evaporization number 3.99 (Butyl acetate = 1)
Critical temperature 280
Critical pressure 36.8
Density 0.8046 g/cm3 (20 C)
Solubility in water 6 g/L
Viscosity 0.43 cp (25 C)
Refractive index 1.3887 (20 C)
Partition coefficient, pKow 0.84
Heat of vaporization 36.8 kJ/mol
Heat of combustion -3038 kJ/mol

Hazards and Protection.
Storage Keep away from heat, sparks, and flame. Keep away from sources of ignition. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Flammables-area.
Handling Wash thoroughly after handling. Use only in a well ventilated area. Ground and bond containers when transferring material. Use spark-proof tools and explosion proof equipment. Avoid contact with eyes, skin, and clothing. Empty containers retain product residue, (liquid and/or vapor), and can be dangerous. Avoid contact with heat, sparks and flame. Avoid ingestion and inhalation. Do not pressurize, cut, weld, braze, solder, drill, grind, or expose empty containers to heat, sparks or open flames.
Protection Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Respirators Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Small spills/leaks Absorb spill with inert material, (e.g., dry sand or earth), then place into a chemical waste container. Clean up spills immediately, using the appropriate protective equipment. Remove all sources of ignition. Use a spark-proof tool. Provide ventilation. A vapor suppressing foam may be used to reduce vapors.
Disposal code 1
Stability Stable under normal temperatures and pressures.
Incompatibilities Strong oxidizing agents.
Decomposition Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide.

Fire.
Flash Point,°C -1
Autoignition, °C 475
Upper exp. limit, % 9
Lower exp. limit, % 1.5
Fire fighting Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Will burn if involved in a fire. Use water spray to keep fire-exposed containers cool. Containers may explode in the heat of a fire. Extinguishing media: For small fires, use dry chemical, carbon dioxide, water spray or alcohol-resistant foam. For large fires, use water spray, fog, or alcohol-resistant foam. Use water spray to cool fire-exposed containers. Water may be ineffective. Do NOT use straight streams of water.
Fire potential HIGHLY FLAMMABLE: Will be easily ignited by heat, sparks or flames.
Hazards Vapors may form explosive mixtures with air. Vapors may travel to source of ignition and flash back. Most vapors are heavier than air. They will spread along ground and collect in low or confined areas (sewers, basements, tanks). Vapor explosion hazard indoors, outdoors or in sewers.
Combustion products Acrid smoke and fumes
NFPA Health 2
  Flammability 4  
  Reactivity 0  

Health.
Exposure limit(s) NIOSH REL: TWA 200 ppm (705 mg/m3)
Poison_Class 4
Exposure effects The toxological properties of this substance have not been fully investigated.
   Ingestion Causes gastrointestinal irritation with nausea, vomiting and diarrhea.
   Inhalation May cause respiratory tract irritation. Vapors may cause dizziness or suffocation.
   Skin May cause skin irritation.
   Eyes Causes eye irritation.

First aid
 
   Ingestion If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately.
   Inhalation Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
   Skin Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.
   Eyes Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid immediately.

Transport.
UN number 2397
Response guide 127
Hazard class 3
Packing Group II  
USCG CHRIS Code MBO  
USCG Compatatibility Group 18 Ketones
HS Code 2914 19 90  
Std. Transport # 4910551