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Urethane

Urethane Suppliers list
Company Name: Shenzhen Sendi Biotechnology Co.Ltd.
Tel: 0755-23311925 18102838259
Email: Abel@chembj.com
Products Intro: Product Name:Urethane
CAS:51-79-6
Purity:99% Package:50/KG
Company Name: Henan DaKen Chemical CO.,LTD.
Tel: +86-371-55531817
Email: info@dakenchem.com
Products Intro: Product Name:Urethane
CAS:51-79-6
Purity:99% Package:100g,500g,1KG,10KG,100KG
Company Name: Henan Tianfu Chemical Co.,Ltd.
Tel: 0371-55170693
Email: info@tianfuchem.com
Products Intro: CAS:51-79-6
Purity:99% Package:500G;1KG;5KG;25KG
Company Name: Mainchem Co., Ltd.
Tel: +86-0592-6210733
Email: sales@mainchem.com
Products Intro: Product Name:Urethane
CAS:51-79-6
Company Name: career henan chemical co
Tel: +86-371-86658258
Email: sales@coreychem.com
Products Intro: Product Name:Urethane
CAS:51-79-6
Purity:99% Package:1kg;1USD

Lastest Price from Urethane manufacturers

  • Urethane
  • US $1.00 / kg
  • 2018-12-19
  • CAS:51-79-6
  • Min. Order: 1kg
  • Purity: 99%
  • Supply Ability: 500kg
Urethane Basic information
Product Name:Urethane
Synonyms:a11032;Aethylcarbamat;Aethylurethan;ai3-00553;Aminoformicacidethylester.;carbamated’ethyle;Carbamidsaeure-aethylester;Estane 5703
CAS:51-79-6
MF:C3H7NO2
MW:89.09
EINECS:200-123-1
Product Categories:Aliphatics;Amines;Mutagenesis Research Chemicals;BETAPRONE
Mol File:51-79-6.mol
Urethane Structure
Urethane Chemical Properties
Melting point 48-50 °C(lit.)
Boiling point 182-184 °C(lit.)
density 1.10
vapor density 3.07 (vs air)
vapor pressure 10 mm Hg ( 77.8 °C)
refractive index 1.4144
Fp 198 °F
storage temp. Room temperature.
solubility slightly soluble
form Crystals or Crystalline Powder
color White
PHpH(50g/l, 25℃) : 5.0~7.0
Water Solubility slightly soluble
Merck 14,9874
BRN 635810
Stability:Stable. Incompatible with strong acids, strong bases, strong oxidizing agents.
CAS DataBase Reference51-79-6(CAS DataBase Reference)
NIST Chemistry ReferenceUrethane(51-79-6)
EPA Substance Registry SystemCarbamic acid, ethyl ester(51-79-6)
Safety Information
Hazard Codes T
Risk Statements 45-22
Safety Statements 53-45-99
RIDADR UN 3077 9 / PGIII
WGK Germany 3
RTECS FA8400000
TSCA Yes
HS Code 29241990
Hazardous Substances Data51-79-6(Hazardous Substances Data)
ToxicityMLD i.p. in mice: 2.1-2.2 g/kg (Franklin)
MSDS Information
ProviderLanguage
Carbamic acid ethyl ester English
SigmaAldrich English
ACROS English
ALFA English
Urethane Usage And Synthesis
DescriptionEthyl 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.
Chemical PropertiesColorless 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.
Chemical PropertiesUrethane is a colorless, almost odorless crystalline solid or powder.
UsesNaturally occurring contaminant in fermented foods, particularly wine, stone-fruit brandies, and bread. This substance is reasonably anticipated to be a human carcinogen.
Usesantiinfective
UsesIntermediate in organic synthesis. In the preparation and modification of amino resins. As solvent, solubilizer and cosolvent for various organic materials. Animal anesthetic in laboratory procedures.
General DescriptionOdorless colorless crystals or white powder. Sublimes readily at 217°F and 54 mm Hg. Cooling saline taste.
Air & Water ReactionsWater soluble. Aqueous solutions are neutral to litmus .
Reactivity ProfileUrethane 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 .
HazardToxic by ingestion.
Safety ProfileConfirmed 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.
Potential ExposureUrethane 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 aidMove 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.
Purification MethodsUrethane is best purified by fractional distillation, but it can be 20 25 1.4144. sublimed at ~103o/~50mm. It has also been recrystallised from *benzene. Its solubilitiy at room temperature is 2g/mL in H2O, 1.25g/mL in EtOH, 1.1g/mL in CHCl3, 0.67g/mL in Et2O and 0.03g/mL in olive oil. It is a suspected human carcinogen.[Beilstein 3 H 22, 3 IV 40.]
IncompatibilitiesDust 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 DisposalConsult 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).
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