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Polyurethane synthesis, wherein the urethane groups −NH−(C=O)−O− link the molecular units A kitchen sponge made of polyurethane foam . Polyurethane (/ ˌ p ɒ l i ˈ jʊər ə ˌ θ eɪ n,-j ʊəˈr ɛ θ eɪ n /; [1] often abbreviated PUR and PU) refers to a class of polymers composed of organic units joined by carbamate (urethane) links.
Ethyl carbamate has been used as an antineoplastic agent and for other medicinal purposes, but this application ended after it was discovered to be carcinogenic in 1943. . However, Japanese usage in medical injections continued and from 1950 to 1975 an estimated 100 million 2 ml ampules of 7-to-15% solutions of ethyl carbamate were injected into patients as a co-solvent in water for dissolving ...
Colorless liquid, irritating and bitter odor, slightly soluble in water, also acts as a blister agent. 124 °C (boiling) 7 7 9 8 9 6 Phosgene: Colorless gas and slightly yellow liquid, moldy hay odor, slightly soluble in water and soluble in most solvents, also acts as a choking agent. −118 / 8 10 6 9 5 8 6
The human health effects of carbamates are well documented in the list of known endocrine disruptor compounds. [34] Clinical effects of carbamate exposure can vary from slightly toxic to highly toxic depending on a variety of factors including such as dose and route of exposure with ingestion and inhalation resulting in the most rapid clinical ...
From that month through January 2016, HPD issued more than 10,000 violations for dangerous lead paint conditions in units with children under 6, the age group most at risk of ingesting toxic paint. Half of the violations were in just 10 percent of the city’s zip codes, low-income neighborhoods in the Bronx, Brooklyn and northern Manhattan, a ...
The polymer fumes are especially harmful to certain animals whose breathing, optimized for rapidity, allows in toxins which are excluded by human lungs. Fumes from Teflon in very high heat are fatal to parrots , [ 4 ] as well as some other birds (PTFE toxicosis).
Urushiol / ʊ ˈ r uː ʃ i. ɒ l / is an oily mixture of organic compounds with allergenic properties found in plants of the family Anacardiaceae, especially Toxicodendron spp. (e.g., poison oak, Chinese lacquer tree, poison ivy, poison sumac), Comocladia spp. (maidenplums), Metopium spp.
Methyl isocyanate (MIC) is an organic compound with the molecular formula CH 3 NCO. Synonyms are isocyanatomethane and methyl carbylamine.Methyl isocyanate is an intermediate chemical in the production of carbamate pesticides and Haffmann Bromamide Degradation (such as carbaryl, carbofuran, methomyl, and aldicarb).