Page 75 - Handbook of Hazardous Chemical Properties

N-BUTYRALDEHYDE 65
Value): Not pertinent; Short-Tern Exposure Limits: Not pertinent; Toxicity by Ingestion: Grade 3; LD,,
50 to 500 mg/kg; Late Toxicity: Data not available; Vapor (Gas) Im‘tm Characteristics: Not pertinent;
Liquid or Solid Irritant Characteristics: Minimum hazard. If spilled on clothing and allowed to remain,
may cause smarting and reddening of the skin; Odor ThreshoM: Not pertinent.
Fire Hazards - Flash Point (deg. F): 263 OC (pure butynediol); Flammable Limits in Air (%): Not
pertinent; Fire Extinguishing Agents: Water, alcohol foam, dry chemical or carbon dioxide; Fire
Extinguishing Agents Not To Be Used Not pertinent; Special Hazards of Combustion Products: Not
pertinent; Behavior in Fire: Not pertinent; Ignition Temperature (deg. F): No data; Electrical Hazard:
Not pertinent; Burning Rate: No data.
Chemical Reactivity - Reactivity with Water: No reaction; Reactivity with Common Materials: No
reactions; Stability During Transport: Stable; Neutralizing Agents forrlcids and Caustics: Not pertinent;
Polymerization: Not pertinent; Inhibitor of Polymerization: Not pertinent.

ISO-BUTYRALDEHYDE
Chemical Designations - Synonyms: Isobutyric Aldehyde; Isobutyraldehyde; Isobutylaldehyde; 2-
Methylpropanal; Chemical Formula: (CH,),CHCHO.
Observable Characteristics - Physical State (as normally shipped): Liquid; Color: Colorless; Odor:
Pungent.
Physical and Chemical Properties - Physical State at I5 “c and I aim. : Liquid; Molecular Weight:
72.11; Boiling Pointat I atm.: 147,64.1,337.3; Freezing Point: -112, -80, 193; Critical Temperature:
464,240, 513; Critical Pressure: 600,41,4.2; Specific Gravity: 0.791 at 20°C (liquid); Vapor (Gas)
Density: 2.5; Ratio of Specijic Heats of Vapor (Gas): 1.093; Latent Heat of Vaporiz&‘on: 180,98,4.1;
Heat of Combustion: -13,850, -7,693, -322.1; Heat of Decomposition: Not pertinent.
Health Hazards Information - Recommended Personal Protective Equipment: Appropriate protective
clothing, including rubber gloves, rubber shoes and protective eyewear; Symptoms Followingl3posure:
Vapor is irritating to the eyes and mucous membranes; General Treatment for Eiposure: EYES:
immediately flush with plenty of water for at least 15 min.; Toxicity by Inhalation (Threshold Limit
Value): Data not available; Short-Term Exposure Limits: Data not available; Toxicity by Ingestion:
Grade 2; 0.5 to 5 glkg; Late Toxicity: Data not available; Vapor (Gas) Irritant Characteristics: Vapors
cause moderate irritation such that personnel will find high concentrations unpleasant. The effect is
temporary; Liquid or Solidlrritant Characteristics: Minimum hazard. If spilled on clothing and allowed
to remain, may cause smarting and reddening of the skin; Odor Threshold 0.047.
Fire Hazards - Flash Point (deg. F): 13 OC, -40 CC; Flammable Limits in Air (76): 2.0 -10.0; Fire
Extinguishing Agents: Foam, dry chemical or carbon dioxide; Fire Extinguishing Agents Not To Be
Used Data not available; Special Hazardr of Combustion Products: Not pertinent; Behavior in Fire:
Vapors are heavier than air and may travel considerable distances to a source of ignition and flash back.
Fires are difficult to control because of reignition; Ignition Temperature (deg. F): 385; Electrical
Hazard Not pertinent; Burning Rate: 4.8 mm/min.
Chemical Reactivity - Reactivity with Water: No reaction; Reactivity with Common Materials: No
reactions; Stability During Transport: Stable; Neutralizing Agents for Acids and Caustics: Not pertinent;
Polymerization: Not pertinent; Inhibitor of Polymerization: Not pertinent.
N-BUTYRALDEHYDE
Chemical Designations - Synonyms: Butanal; Butyraldehyde; Butyric Aldehyde; Butyl Aldehyde;
Chemical Formula: CH,CH,CH,CHO.
Observable Characteristics - Physical State (as normally shipped) : Liquid; Color: Colorless; Odor:
Pungent aldehyde; pungent and intense.
Physical and Chemical Properties - Physical State at I5 “c and I atm. : Liquid; Molecular Weight:
72.11; Boiling Point at I atm.: 167, 14.8, 348; Freezing Point: -142, -96.4, 176.8; Critical
Temperature: 484, 251, 524; Critical Pressure: 590, 40, 4.1; Specific Gravity: 0.803 at 20°C; Vapor
(Gas) Density: 2.5; Ratio of Specific Heats of Vapor (Gas): 1.089; Latent Heat of Vaporization: 184,
102, 4.27; Heat of Combustion: -15,210, -8,450, -353.8; Heat of Decomposition: Not pertinent.