Page 269 - Handbook of Hazardous Chemical Properties

METHYLETHYLPYRlDINE 259
METHYL ETHYL KETONE
Chemical Designations - Synonyms: 2-Butanone; Ethyl methyl ketone; MEK; Chemical Formula:
CH3COCH,CH3,
Observable Characteristics - Physical State (as shipped): Liquid; Color: Colorless; Odor: Like
acetone; pleasant; pungent.
Physical and Chemical Properties - Physical State at 15 "c and 1 atm. : Liquid; Molecular Weight:
72.11; Boiling Point at I am.: 175.3, 79.6, 352.8; Freezing Point: -123.3, -86.3, 186.9; Critical
Temperature: 504.5, 262.5, 535.7; Critical Pressure: 603, 41.0, 4.15; Specific Gravity: 0.806 at 20
"C (liquid); Vapor (Gas) SpecGc Gravity: 2.5; Ratio of Specgc Heats of Vapor (Gas): 1.075; Latent
Heat of Vaporimion: 191, 106, 4.44; Heat of Combustion: -13,480, -7491, -313.6; Heat of
Decomposition: Not pertinent.
Health Hazards Information -Recommended Personal Protective Equipment: Organic canister or air
pack; plastic gloves; goggles or face shield; Symptoms Following Exposure: Liquid causes eye burn.
Vapor irritates eye, nose, and throat; can cause headache, dizziness, nausea, weakness, and loss of
consciousness; General Treatment for Enposure: INHALATION: remove victim from exposure; if
breathing has stopped, start resuscitation and administer oxygen. EYES: wash with plenty of water for
at least 15 min. and call physician; Toxicity by Inhalation (Threshold Limit Value): 200 ppm; Short-
Term Inhalation Limits: 290 mg/m3 for 60 min.; Toxicity by Ingestion: Grade 2, LD,, 0.5 to 5 glkg
(rat); Late Toxicity: None; Vapor (Gas) Irritant Characteristics: Vapors causes a slight smarting of the
eyes or respiratory system if present in high concentrations. The effect is temporary; Liquid or Solid
Im*tai# Characteristics: Minimum hazard. If spilled on clothing and allowed to remain, may cause
smarting and reddening of skin; Odor Threshold: 10 ppm.
Fire Hazards - Flash Point (deg. F): 20 CC; 22 OC; Flammable Limits in Air (%): 1.8 - 11.5; Fire
Extinguishing Agents: Alcohol foam dry chemical, carbon dioxide; Fire Extinguishing Agents Not To
Be Used: Water may be ineffective; Special Hazardr of Combustion Products: Not pertinent; Behavior
in Fire: Not pertinent; Ignition Temperature (deg. F): 961; Electrical Hazard: Class I, Group D;
Burning Rate: 4.1 mm/min.
Chemical Reactivity - Reactivity with Water: No reaction; Reactivity with Common Materials: No
reaction; Stability During Transport: Stable; Neutralizing Agents forAcidr and Caustics: Not pertinent;
Polymerizm'on: Not pertinent; Inhibitor of Polymerization: Not pertinent.

METHYLETHYLPYRIDm
Chemical Designations - Synonyms: Aldehyde-collidine; Aldehydine; 5-Ethyl-2-Methylpyridine; 5-
Ethyl-2-picoline; MEP; Chemical Formula: C8H,,N.
Observable Characteristics - Physical State (as shipped): Liquid; Color: Colorless; Odor: Sharp,
penetrating.
Physical and Chemical Properties - Physical State at 15 "c and 1 atm. : Liquid; Molecular Weight:
121.18; Boiling Point at 1 atm.: 252, 178, 451; Freezing Point: -94.5, -70.3, 202.9; Critical
Temperature: Not pertinent; Critical Pressure: Not pertinent; aeczfic Gravity: 0.922 at 20 "C (liquid);
Vapor (Gas) Speciftc Gravity: Not pertinent; Ratio of Specific Heats of Vapor (Gas): Not pertinent;
Latent Heat of Vaporization: Data not available; Heat of Combustion: Data not available; Heat of
Decomposition: Not pertinent.
Health Hazards Information - Recommended Personal Protective Equipment: Air-supplied mask for
high vapor concentrations; plastic gloves; goggles or face shield; Symptoms Following Exposure:
Breathing of vapors will cause vomiting and chest discomfort. Contact with liquid causes skin and eye
burns; General Treatment for E5posure: INHALATION: remove victim from exposure; give oxygen
if breathing is difficult; call a physician. EYES OR SKIN: immediately flush with plenty of water for
at least 15 min.; get medical care for eyes; Toxicity by Inhalation (Threshold Limit Value): 1700
ppd3.7 hrllethal (rat); Short-Term Inhalation Limits: Data not available; Toxicity by Ingestion: Grade
2, LD,, 0.5 to 5 glkg (rat); Late Toxicity: Data not available; Vapor (Gas) Im'tant Characteristics:
Vapors cause moderate irritation such that personnel will find high concentrations unpleasant. The
effect is temporary; Liquid or Solid Irritant Characteristics: Causes smarting of the skin and first-