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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.
4,4′-Methylenebis(2-chloroaniline) (also known as MOCA, MBOCA, and bisamine) is a substance used as a curing agent in polyurethane production. [3] MOCA is an aromatic amine which is structurally similar to benzidine, a known human bladder carcinogen.
IARC group 3 substances, chemical mixtures and exposure circumstances are those that can not be classified in regard to their carcinogenicity to humans by the International Agency for Research on Cancer (IARC).
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 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).
5. You can’t see what you’re doing. If you wear glasses or contact lenses, you’ll know how difficult it is to see in the shower already. If you add steam to the equation, it’s blurry for ...
The odor detection threshold for phosgene is 0.4 ppm, four times the threshold limit value (time weighted average). Its high toxicity arises from the action of the phosgene on the −OH , −NH 2 and −SH groups of the proteins in pulmonary alveoli (the site of gas exchange), respectively forming ester, amide and thioester functional groups in ...
The Perkins and Will Transparency List includes substances commonly found in the built environment that regulatory entities have classified as being harmful to human and/or environmental health. Because these regulatory designations are constantly evolving, the list is updated as new information is published.