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METHANOL
 
DOT ID:
METHANOL  3  UN1230  PG: II  FLAMMABLE LIQUID
 
C.A.S. Number: 67-56-1
 
  • FLAMMABLE LIQUID
  • POISON
 
NFPA 704:
  • Red 3        -- Flammability: Ignites at normal temperatures
  • Blue 1       -- Health Hazard: Slightly hazardous
  • Yellow 0    -- Reactivity: Normally stable
 
General Description
A colorless fairly volatile liquid with a faintly sweet pungent odor like that of ethyl alcohol. Completely mixes with water. The vapors are slightly heavier than air and may travel some distance to a source of ignition and flash back. Any accumulation of vapors in confined spaces, such as buildings or sewers, may explode if ignited. Used to make chemicals, to remove water from automotive and aviation fuels, as a solvent for paints and plastics, and as an ingredient in a wide variety of products.
 
Reactivity Alerts
 
  • Highly Flammable
 
Air & Water Reactions
 
Highly flammable. Soluble in water in all proportions.
 
Fire Hazard
Behavior in Fire: Containers may explode. (USCG, 1999)
 
Health Hazard
Exposure to excessive vapor causes eye irritation, head- ache, fatigue and drowsiness. High concentrations can produce central nervous system depression and optic nerve damage. 50,000 ppm will probably cause death in 1 to 2 hrs. Can be absorbed through skin. Swallowing may cause death or eye damage. (USCG, 1999)
 
Reactivity Profile
METHANOL reacts violently with acetyl bromide [Merck 11th ed. 1989]. Mixtures with concentrated sulfuric acid and concentrated hydrogen peroxide can cause explosions. Reacts with hypochlorous acid either in water solution or mixed water/carbon tetrachloride solution to give methyl hypochlorite, which decomposes in the cold and may explode on exposure to sunlight or heat. Gives the same product with chlorine. Can react explosively with isocyanates under basic conditions. The presence of an inert solvent mitigates this reaction [Wischmeyer 1969]. A violent exothermic reaction occurred between methyl alcohol and bromine in a mixing cylinder [MCA Case History 1863. 1972]. A flask of anhydrous lead perchlorate dissolved in methanol exploded when it was disturbed [J. Am. Chem. Soc. 52:2391. 1930]. P4O6 reacts violently with methanol. (Thorpe, T. E. et al., J. Chem. Soc., 1890, 57, 569-573). Ethanol or methanol can ignite on contact with a platinum-black catalyst. (Urben 1794).
 
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. Apply water spray or mist to knock down vapors. Land spill: Dig a pit, pond, lagoon, holding area to contain liquid or solid material. Dike surface flow using soil, sand bags, foamed polyurethane, or foamed concrete. Water spill: Allow to aerate. Use natural barriers or oil spill control booms to limit spill travel. Remove trapped material with suction hoses. (AAR, 2003)
 
Protective Clothing
Approved canister mask for high vapor concentrations; safety goggles; rubber gloves. (USCG, 1999) 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. Volatile chemicals have a high risk of being aspirated into the victim's lungs during vomiting which increases the medical problems. 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. IMMEDIATELY transport the victim to a hospital. 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)
 
 
Molecular Formula:
  • CH4O
 
Flash Point:                         52.0 ° F (NTP, 1992)
Lower Explosive Limit:            6.0 % (NTP, 1992)
Upper Explosive Limit:            36.5 % (NTP, 1992)
Autoignition Temperature:     867.0 ° F (USCG, 1999)
Melting Point:                    -144.0 ° F (NTP, 1992)
Vapor Pressure:                   100.0 mm Hg at 70.2 ° F ;
                                        237.87 mm Hg at 100° F (NTP, 1992)
Vapor Density:                       1.11 (NTP, 1992)
Specific Gravity:                     0.792 at 68.0 ° F (USCG, 1999)
Boiling Point:                       148.3 ° F at 760 mm Hg (NTP, 1992)
Molecular Weight:                  32.04 (NTP, 1992)
Water Solubility:                  greater than or equal to 100 mg/mL at 70° F (NTP, 1992)
AEGL:                                data unavailable
ERPG-1                     ERPG-2               ERPG-3
200.0 ppm                 1000.0 ppm         5000.0 ppm                            (AIHA, 2008)
TEEL:                                data unavailable
IDLH:                                6000.0 ppm                                            (NIOSH, 2003)
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Regulatory Names:
  • METHANOL
 
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:  U154
 
 Alternate Chemical Names
This section provides a listing of alternate names for this chemical, including trade names, synonyms, and foreign names.
 
  • ALCOHOL METÍLICO (DOT SPANISH)
  • ALCOOL MÉTHYLIQUE (DOT FRENCH)
  • BIELESKI'S SOLUTION
  • CARBINOL
  • COLONIAL SPIRIT
  • COLUMBIAN SPIRIT
  • COLUMBIAN SPIRITS
  • METANOL (DOT SPANISH)
  • METHANOL CLUSTER
  • METHANOL {METHYL ALCOHOL}
  • METHYL ALCOHOL
  • METHYL HYDROXIDE
  • METHYLOL
  • MONOHYDROXYMETHANE
  • MÉTHANOL (DOT FRENCH)
  • NA 1230 (DOT)
  • PYROLIGNEOUS SPIRIT
  • PYROXYLIC SPIRIT
  • RCRA WASTE NUMBER U154
  • SOLUTIONS, BIELESKI'S
  • UN 1230 (DOT)
  • WOOD ALCOHOL
  • WOOD NAPHTHA
  • WOOD SPIRIT
 
 
Information obtained from:
Cameo Chemicals
Emergency Response Division, Office of Response and Restoration. National Ocean Service, National Oceanic and Atmospheric Administration
 
July 29, 2011