{"cas":"67-56-1","name":"methanol","synonyms":["methanol","methyl alcohol","67-56-1","wood alcohol","Methylol","Wood naphtha","Methyl hydroxide","Monohydroxymethane","Methylalkohol","Alcool methylique","Methyl hydrate","Alcohol, methyl","Metanolo","MeOH","Alcool metilico","Metylowy alkohol","CH3OH","Rcra waste number U154","Metanol","Alcohol,methyl"],"cid":887,"ghs":{"pictograms":["GHS02","GHS06","GHS07","GHS08"],"signal":null,"classes":["Flam. Liq. 2 (> 99.9%)","Acute Tox. 3 (99.9%)","Acute Tox. 3 (99.4%)","STOT SE 1 (> 99.9%)","Carc. 2 (100%)","Repr. 1B (100%)","Flammable liquid - category 2","Acute toxicity - category 3","Specific target organ toxicity (single exposure) - category 1","Flammable liquids - Category 2","Acute toxicity (Oral) - Category 4","Serious eye damage/eye irritation - Category 2","Reproductive toxicity - Category 1B","Specific target organ toxicity - Single exposure - Category 1 (central nervous system, visual organs, systemic toxicity), \nCategory 3 (narcotic effects)","Specific target organ toxicity - Repeated exposure - Category 1 (central nervous system, visual organs)","Acute toxicity (Oral) - Category 5","Serious eye damage/eye irritation - Category 2A-2B","Specific target organ toxicity - Single exposure - Category 1 (central nervous system, visual organs, systemic toxicity), \nCategory 3 (respiratory tract irritation, narcotic effects)","Teratogens, Flammable agents - 3rd degree","Flam. Liq. 2","Acute Tox. 3 *","STOT SE 1"],"h_statements":["H225 Highly Flammable liquid and vapor","H301 Toxic if swallowed","H311 Toxic in contact with skin","H331 Toxic if inhaled","H370 **: Causes damage to organs","H225 (> 99.9%): Highly Flammable liquid and vapor","H301 (99.9%): Toxic if swallowed","H311 (99.9%): Toxic in contact with skin","H331 (99.4%): Toxic if inhaled","H370 (> 99.9%): Causes damage to organs","H351 (100%): Suspected of causing cancer","H360FD (100%): May damage fertility; May damage the unborn child","H302 Harmful if swallowed","H319 Causes serious eye irritation","H336 May cause drowsiness or dizziness","H360 May damage fertility or the unborn child","H370 Causes damage to organs","H372 Causes damage to organs through prolonged or repeated exposure","H303 May be harmful if swallowed","H335 May cause respiratory irritation"],"p_statements":{}},"physical":{"appearance":"Methanol appears as 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.","odour":"Slight alcoholic odor when pure; repulsive, pungent odor when crude","boiling_point":"148.3 °F at 760 mmHg (NTP, 1992)","melting_point":"-144 °F (NTP, 1992)","flash_point":"52 °F (NTP, 1992)","water_solubility":"greater than or equal to 100 mg/mL at 70 °F (NTP, 1992)","density":"0.792 at 68 °F (USCG, 1999) - Less dense than water; will float","vapour_density":"1.11 (NTP, 1992) - Heavier than air; will sink (Relative to Air)","vapour_pressure":"100 mmHg at 70.2 °F ; 237.87 mmHg at 100 °F (NTP, 1992)","log_pow":"log Kow = -0.77","henry_constant":"Henry's Law constant = 4.55X10-6 atm-cu m/mol at 25 °C","autoignition_temperature":"867 °F (USCG, 1999)"},"transport":{"un_number":null,"un_psn":null,"hazard_class":null,"packing_group":null},"exposure":{"osha_pel":"Vacated 1989 OSHA PEL TWA 200 ppm (260 mg/cu m); STEL 250 ppm (325 mg/cu m), skin designation, is still enforced in some states.","niosh_rel":"Recommended Exposure Limit: 15 Minute Short-Term Exposure Limit: 250 ppm (325 mg/cu m), skin.","note":"Auto-sourced from PubChem. NZ WES must be confirmed against MBIE Workplace Exposure Standards table before use."},"first_aid":{"inhalation":"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.","skin":"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.","eye":"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.","ingestion":"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)"},"data_source":"pubchem","source_url":"https://pubchem.ncbi.nlm.nih.gov/compound/887","fetched_at":"2026-06-06T08:30:49.688244+00:00","updated_at":"2026-06-06T08:30:49.688244+00:00","content_hash":"b694b735188ba14b","ttl_days":180,"confidence":"medium","verified_by":""}