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51-79-6

51-79-6 Structure

51-79-6 Structure
IdentificationMore
[Name]

Urethane
[CAS]

51-79-6
[Synonyms]

CARBAMIC ACID ETHYL ESTER
ETHYL CARBAMATE
ETHYLURETHANE
LABOTEST-BB LT01409570
URETHANE
A 11032
a11032
Aethylcarbamat
Aethylurethan
ai3-00553
Aminoformicacidethylester.
carbamated’ethyle
Carbamidsaeure-aethylester
Estane 5703
Ethyl ester of carbamic acid
Ethyl urethan
Ethylaminoformate
Ethylester kyseliny karbaminove
ethylesterkyselinykarbaminove
ethylesterkyselinykarbaminove(czech)
[EINECS(EC#)]

200-123-1
[Molecular Formula]

C3H7NO2
[MDL Number]

MFCD00007966
[Molecular Weight]

89.09
[MOL File]

51-79-6.mol
Chemical PropertiesBack Directory
[Description]

Ethyl carbamate occurs as colourless or white columnar crystals or granular powder. It is very soluble in water. With heat, ethyl carbamate undergoes decomposition and emits toxic fumes of carbon monoxide, carbon dioxide, and nitrogen oxides. Ethyl carbamate is used as an intermediate in the synthesis of a number of chemical products, for example, pharmaceuticals, in biochemical research and medicine, and as a solubiliser and co-solvent for pesticides and fumigants. Prior to World War II, ethyl carbamate saw relatively heavy use in the treatment of multiple myeloma before it was found to be toxic, carcinogenic, and largely ineffective. However, due to U.S. FDA regulations, ethyl carbamate has been withdrawn from pharmaceutical use. However, small quantities of ethyl carbamate are also used in laboratories as an anaesthetic for animals.
[Appearance]

Colorless crystals or white powder; odorless, saltpeter-like taste. Solutions neutral to litmus. Soluble in water, alcohol, ether, glycerol, and chloroform; slightly soluble in olive oil. Combustible.
[Appearance]

Urethane is a colorless, almost odorless crystalline solid or powder.
[Appearance]

white crystalline powder
[mp ]

48-50 °C(lit.)
[bp ]

182-184 °C(lit.)
[density ]

1.10
[vapor density ]

3.07 (vs air)
[vapor pressure ]

10 mm Hg ( 77.8 °C)
[Fp ]

198 °F
[solubility ]

slightly soluble
[Stability:]

Stable. Incompatible with strong acids, strong bases, strong oxidizing agents.
[Water Solubility ]

slightly soluble
[Merck ]

14,9877
[BRN ]

635810
[CAS DataBase Reference]

51-79-6(CAS DataBase Reference)
[NIST Chemistry Reference]

Urethane(51-79-6)
[EPA Substance Registry System]

51-79-6(EPA Substance)
Safety DataBack Directory
[Hazard Codes ]

T
[Risk Statements ]

R45:May cause cancer.
[Safety Statements ]

S53:Avoid exposure-obtain special instruction before use .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
[WGK Germany ]

3
[RTECS ]

FA8400000
[HS Code ]

29241990
[Safety Profile]

Confirmed carcinogen with experimental carcinogenic, neoplastigenic, and tumorigenic data. A transplacental carcinogen. Moderately toxic by ingestion, intraperitoneal, subcutaneous, intramuscular, parenteral, and intravenous routes. An experimental teratogen. Experimental reproductive effects. Human mutation data reported. Causes depression of bone marrow and occasionally focal degeneration in the brain. Can also produce central nervous system depression, nausea and vomiting. Has been found in over 1000 beverages sold in the United States. The most heavily contaminated liquors are bourbons, sherries, and fruit brandies (some had 1000 to 12,000 ppb urethane). Many whiskeys, table and dessert wines, brandies, and liqueurs contain potentially hazardous amounts of urethane. The allowable limit for urethane in alcoholic beverages is 125 ppb. It is formed as a side product during processing.Hot aqueous acids or alkalies decompose urethane to ethanol, carbon dioxide, and ammonia. Reacts with phosphorus pentachloride to form an explosive product. When heated it emits toxic fumes of NOx. Used as an intermedate in the manufacture of pharmaceuticals, pesticides, and fungicides. See also CARBAMATES.
[Hazardous Substances Data]

51-79-6(Hazardous Substances Data)
Raw materials And Preparation ProductsBack Directory
【Raw materials】

1-BENZYL 4-ETHYL PIPERIDINE-1,4-DICARBOXYLATE
【Preparation Products】

Amitraz-->2,4-Dichloro-5-cyanopyrimidine-->Moricizine-->1-CYCLOHEXYLURACIL-->1-Cyclohexyl-1,2,3,4-tetrahydro-2,4-dioxopyrimidine-5-carbonitrile ,97%-->Nefazodone-->Hydroxyurea-->DCU-->Fenoxycarb-->1-PHENYLSEMICARBAZIDE-->DIETHYL IMINODIACETATE-->ETHOXYCARBONYL ISOCYANATE-->Diethyl malonyldicarbamate-->Ethyl N-cyclohexylurethane
Hazard InformationBack Directory
[General Description]

Odorless colorless crystals or white powder. Sublimes readily at 217°F and 54 mm Hg. Cooling saline taste.
[Reactivity Profile]

URETHANE(51-79-6) is incompatible with alkalis, acids, chloral hydrate, camphor, menthol and thymol. Also incompatible with antipyrine and salol. May react with strong oxidizing agents. Liquefies with benzoic acid, resorcinol and salicylic acid. Reacts with phosphorus pentachloride to form an explosive product .
[Air & Water Reactions]

Water soluble. Aqueous solutions are neutral to litmus .
[Potential Exposure]

Urethane is used as a chemical intermediate in manufacture of pharmaceuticals; pesticides, and fungicides; in the preparation of amino resins. It may be reacted with formaldehyde to give cross-linking agents which impart wash-and-wear properties to fabrics. It has also been used as a solubilizer and cosolvent in the manufacture of pesticides, fumigants, and cosmetics. It was formerly used in the treatment of leukemia. It occurs when diethylpyrocarbonate, a preservative used in wines, fruit juices, and soft drinks, is added to aqueous solutions.
[First aid]

Move victim to fresh air. Call 911 or emergency medical service. Give artificial respiration if victim is not breathing. Do not use mouth-to-mouth method if victim ingested or inhaled the substance; give artificial respiration with the aid of a pocket mask equipped with a one-way valve or other proper respiratory medical device. Administer oxygen if breathing is difficult. Remove and isolate contaminated clothing and shoes. In case of contact with substance, immediately flush skin or eyes with running water for at least 20 minutes. For minor skin contact, avoid spreading material on unaffected skin. Keep victim warm and quiet. Effects of exposure (inhalation, ingestion, or skin contact) to substance may be delayed. Ensure that medical personnel are aware of the material(s) involved and take precautions to protect themselves. Medical observation is recommended for 24 to 48 hours after breathing overexposure, as pulmonary edema may be delayed. As first aid for pulmonary edema, a doctor or authorized paramedic may consider administering a drug or other inhalation therapy.
[Fire Hazard]

This chemical is combustible.
[Incompatibilities]

Dust may form explosive mixture with air. Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids, oxoacids, epoxides, gallium, perchlorate.
[Waste Disposal]

Consult with environmental regulatory agencies for guidance on acceptable disposal practices. Generators of waste containing this contaminant (≥100 kg/mo) must conform to EPA regulations governing storage, transportation, treatment, and waste disposal. Controlled incineration (incinerator equipped with a scrubber or thermal unit to reduce nitrogen oxides emissions).
Material Safety Data Sheet(MSDS)Back Directory
[msds information]

Carbamic acid ethyl ester(51-79-6).msds
Spectrum DetailBack Directory
[Spectrum Detail]

Urethane(51-79-6) IR2
Urethane(51-79-6) MS
Urethane(51-79-6) 1H NMR
Urethane(51-79-6) 13C NMR
Urethane(51-79-6) IR3
Urethane(51-79-6) IR1
Urethane(51-79-6) Raman
Well-known Reagent Company Product InformationBack Directory
[Acros Organics]

Urethane, 99%(51-79-6)
[Alfa Aesar]

Ethyl carbamate, 98%(51-79-6)
[Sigma Aldrich]

51-79-6(sigmaaldrich)
[TCI AMERICA]

Ethyl Carbamate,>98.0%(GC)(N)(51-79-6)
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