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2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD) is a polychlorinated dibenzo-p-dioxin (sometimes shortened, though inaccurately, to simply 'dioxin') [3] with the chemical formula C 12 H 4 Cl 4 O 2. Pure TCDD is a colorless solid with no distinguishable odor at room temperature.
By far most toxicity studies have been performed using 2,3,7,8-tetrachlorodibenzo-p-dioxin. The LD 50 of TCDD varies wildly between species and even strains of the same species, with the most notable disparity being between the seemingly similar species of hamster and guinea pig.
2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD) is the reference chemical to which the toxicity of other dioxins and DLCs are compared. TCDD is the most toxic DLC known. TCDD is the most toxic DLC known. Other dioxins and DLCs are assigned a scaling factor, or TEF, in comparison to TCDD.
One of the most toxic compounds known, 2,3,7,8-tetrachlorodibenzo[p]dioxin, a PCDD, is assigned a TEF of 1. [54] In June 2020, State Impact of Pennsylvania stated that "In 1979, the EPA banned the use of PCBs, but they still exist in some products produced before 1979. They persist in the environment because they bind to sediments and soils.
This estimation was based on the analysis of fat tissue biopsies collected with an interval of 28 months from on 14-year-old girl who for a period of about 2–3 years had been exposed to technical pentachlorophenol. The half-lives of Hexachlorodibenzo-p-dioxin and octachlorodibenzo-p-dioxin were estimated to be 3.5 and 2 years, respectively. [6]
Some people love a nice Valentine’s night in — cooking dinner, drinking wine and watching a movie; others love to celebrate the holiday with a fancy night out. (Or perhaps you love both and ...
Bud Light Stage during the 2015 festival in Chicago. This is a list of Lollapalooza lineups, sorted by year.Lollapalooza was an annual travelling music festival organized from 1991 to 1997 by Jane's Addiction singer Perry Farrell.
Adriana Gambino [2] Noelle Giorgi: Americana [3] Samantha Sage: Ashley Blaze [4] Camron Clay: Big Rig Betty [5] Maria James [6] WOW World Tag Team Champion: BK Rhythm [7] Killa Kate Folan [8] Brittany Bay [4] Brittany Bay: Catalina Speed: Emma Maria Diaz: Chainsaw [9] Reyna Merre Velarde: Chantilly Chella [10] Rachel Kelvington-Bostic [11 ...