Urethane Cas 51-79-6
Product Description
Product Name: Urethane
Synonyms: Ethyl Carbamate
CAS No. 51-79-6
M.F.: C3H7NO2
M.W.: 89.09
EINECS: 200-123-1
Specifications
| Item | Specification |
| Appearance | White Crystalline Powder |
| Assay | ≥98.0% |
| Density | 1.10 |
| Melting Point | 48-50 °C(lit.) |
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Urethane (also known as ethyl carbamate) is an organic compound with the chemical formula NH₂COOC₂H₅. Despite its name, it is not related to polyurethane polymers—those contain urethane linkages but do not consist of free urethane.
🔬 Chemical Nature
A white crystalline solid at room temperature
Formed by reacting ethanol, urea, and heat—or via reactions between cyanic acid and ethanol
Naturally occurs in fermented foods and beverages (e.g., wine, bread, soy sauce) due to ethanol-urea interactions during fermentation
📌 Historical & Current Uses
1. Former Medical Use (Now Obsolete)
In the early 20th century, urethane was used as a chemotherapy agent for leukemia and multiple myeloma due to its ability to suppress bone marrow activity.
Abandoned because of high toxicity and carcinogenicity.
2. Laboratory Research
Used as an anesthetic in veterinary medicine for rodents and small animals (though largely replaced by safer agents).
Employed in experimental biology to induce tumors in animal models for cancer research.
3. Industrial Byproduct / Contaminant
Not intentionally added to food, but monitored as a potential carcinogen in alcoholic beverages and fermented products.
Regulated by agencies like the FDA and WHO, which recommend minimizing its levels in consumables.
⚠️ Health & Safety Concerns
Classified as "probably carcinogenic to humans" (Group 2A) by the International Agency for Research on Cancer (IARC).
Chronic exposure linked to lung, liver, and blood cancers in animal studies.
Acute toxicity includes nausea, dizziness, and central nervous system depression.
✅ Summary
Urethane (ethyl carbamate) is a carcinogenic compound once used in medicine but now avoided due to safety risks. Its main relevance today lies in:
Toxicology research,
Monitoring in fermented foods and alcoholic drinks,
Historical context in oncology and anesthesia.
It should not be confused with polyurethanes, which are safe, widely used plastics containing urethane functional groups but no free ethyl carbamate.
Packing & Shipping
FAQ
1. Do you have stock?
As we know, most customers prefer stock, so we will try to keep stock for some products.
2. Could you please provide some samples?
In order to facilitate transaction, it's my pleasure to provide you samples.
3. How should I pay?
We accept various payment terms such as L/C,T/T, Western Union and Money Gram.
4. Is there a discount?
Different quantity has different discount.
5.What's your MOQ?
Different products have different MOQ, such as:
1).Peptide products, the MOQ is 1 gram level
2).Liquid products, the MOQ is usually 50-100ML
3).API, the MOQ is 1KG
4).Intermediate products and conventional product, the MOQ is 1KG; custom-tailored products, the MOQ depends on the production process.
5).Food additives and vitamin, the MOQ is usually one package: such as Vitamin C is 25KG / drum, Vitamin E oil or Vitamin A oil is 5KG/bag;Vitamin E powder or Vitamin A powder is 20KG / cartons.
6).Agrochemical , the MOQ is 1KG, except preparations.
6.How do we take the quality complaint ?
First of all, our quality control will reduce the quality issue to near zero. If there is a quality problem caused by us, we will send you free goods for replacement or compensate your loss.
Company Information
Company profile
Wuhan Fortuna Chemical Co.,Ltd established in 2006, is a big integrative chemical enterprise being engaged in Pharmaceutical & its intermediates, Food/Feed additives, Fine chemicals in distributing the products of our own company and affiliated enterprises, are the members of Hubei E-commerce Chamber.
Our company has professional persons who major in chemical R&D and sicentific management, supply fine chemical products with high quality and close service, also supply custom-tailored products according to our clients’ requirement.
We have a positive and self-motivated management work team with a common philosophy, caring and commitment through teamwork, our team strive to achieve success in delighting our clients and ourselves.
Since Wuhan Fortuna Chemical Co., Ltd founded, we continuously innovate our products and improve our service, sales network. Hence, we initiate the first sale mode on net in China, which is the retail trade of small package bring along wholesale of diversified management modes. Our products are exported widely to South Korea, Vietnam, Australia, Europe and South America, highly recommended by our clients.
We insist on the management creed “Market is our compass, Quality is our life, Credit is our soul”. Clients’ trust is our forward powder, their satisfaction is our struggling goal.
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