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Diphenyl ether is the organic compound with the formula (C 6 H 5) 2 O. It is a colorless, low-melting solid. It is a colorless, low-melting solid. This, the simplest diaryl ether , has a variety of niche applications.
Content [%] Substances Polystyrene foam 0.8–4 HBCD High impact polystyrene: 11–15 DecaBDE, brominated polystyrene Epoxy resin: 0-0.1 TBBPA Polyamides: 13–16 DecaBDE, brominated polystyrene Polyolefins: 5–8 DecaBDE, propylene dibromo styrene Polyurethanes: n/a No brominated FR available Polyterephthalate: 8–11 Brominated polystyrene
Polybrominated diphenyl ethers or PBDEs, are a class of organobromine compounds that are used as flame retardants. Like other brominated flame retardants , PBDEs have been used in a wide array of products, including building materials, electronics, furnishings, motor vehicles, airplanes, plastics, polyurethane foams, [ 1 ] and textiles.
The simplest member of the phenyl ether family is diphenyl ether (DPE), also called diphenyl oxide, the structure of which is provided in Figure 4. Low molecular weight polyphenyl ethers and thioethers are used in a variety of applications, and include high-vacuum devices, optics, electronics, and in high-temperature and radiation-resistant ...
Elevated concentrations can be found in air, water, soil, food, sediment, sludge, and dust. [ 3 ] [ 8 ] [ 9 ] In the environment, "photolysis, anaerobic degradation and metabolism in biota" can cause debromination of octaBDE, which produces PBDEs with fewer bromine atoms "which may have higher toxicity and bioaccumulation potential."
The FDA has a food defects level handbook that establishes "maximum levels of natural or unavoidable defects in foods for human use that present no health hazard."
Decabromodiphenyl ether (also referred to as decaBDE, DBDE, BDE-209) is a brominated flame retardant which belongs to the group of polybrominated diphenyl ethers (PBDEs). It was commercialised in the 1970s and was initially thought to be safe, [ 3 ] [ 4 ] but is now recognised as a hazardous and persistent pollutant.
The FDA’s recent ban on Red Dye No. 3, set to take effect by 2027 for foods and 2028 for drugs, marks a significant step in addressing safety concerns over artificial food dyes in the U.S. food ...