Brominated dioxins/furans and hydroxylated polybrominated diphenyl ethers: Occurrences in commercial 1,2-bis(2,4,6-tribromophenoxy)ethane (BTBPE) and 2,4,6-Tribromophenol (cas 118-79-6), and formation during synthesis of BTBPE☆
-
Add time:09/04/2019 Source:sciencedirect.com
Polybrominated dibenzo-p-dioxins (PBDDs) and hydroxylated polybrominated diphenyl ethers (OH-PBDEs) can be formed from bromophenols (BPs) by thermal degradation, biosynthesis or phototransformation. However, it is unknown whether PBDDs and OH-PBDEs can be formed during the chemical production processes that utilize BPs as raw materials. 2,4,6-tribromophenol (2,4,6-TBP) is an important raw material for the synthesis of 1,2-bis(2,4,6-tribromophenoxy)ethane (BTBPE), a novel brominated flame retardant. In this study, PBDDs, polybrominated dibenzofurans (PBDFs) and OH-PBDEs have been identified and quantified in commercially available BTBPE and 2,4,6-TBP. Furthermore, their formation as unintentional by-products during the laboratory synthesis of BTBPE from 2,4,6-TBP and 1,2-dibromoethane in the presence of sodium carbonate has also been investigated. 2,3,7,8-substituted PBDDs and PBDFs (2,3,7,8-PBDD/Fs) were undetectable in commercial samples of BTBPE and present in low levels (nanogram per gram) in 2,4,6-TBP. Two tetrabrominated dibenzo-p-dioxins (TeBDDs), namely 1,3,6,8- and 1,3,7,9-TeBDD, and three hydroxylated pentabrominated diphenyl ethers (OH-pentaBDEs), namely 4′-OH-BDE121, 2′-OH-BDE121, and 6′-OH-BDE100, were identified or tentatively identified, and quantitatively estimated to be at concentrations in the range of undetectable to several thousands of nanograms per gram in commercial BTBPE and 2,4,6-TBP. TeBDDs and OH-pentaBDEs were formed as by-products from 2,4,6-TBP during BTBPE synthesis. Further studies need to be conducted in order to determine whether PBDD/Fs and OH-PBDEs are also formed during the industrial synthesis of other chemical compounds that utilize BPs as raw materials or intermediates.
We also recommend Trading Suppliers and Manufacturers of 2,4,6-Tribromophenol (cas 118-79-6). Pls Click Website Link as below: cas 118-79-6 suppliers
Prev:Purifying, cloning and characterizing a novel dehalogenase from Bacillus sp. GZT to enhance the biodegradation of 2,4,6-Tribromophenol (cas 118-79-6) in water☆
Next:Measurement and correlation for the solubility of 2-chloro-5-nitrotoluene-4-sulfonic acid and 2-amino-5-chloro-4-methylbenzenesulfonic acid in aqueous sulfuric acid solutions) - 【Back】【Close 】【Print】【Add to favorite 】
- Related Information
- Purifying, cloning and characterizing a novel dehalogenase from Bacillus sp. GZT to enhance the biodegradation of 2,4,6-Tribromophenol (cas 118-79-6) in water☆09/03/2019
- Concentrations of polybrominated diphenyl ethers (PBDEs) and 2,4,6-Tribromophenol (cas 118-79-6) in human placental tissues09/02/2019
- Anaerobic mineralization of 2,4,6-Tribromophenol (cas 118-79-6) to CO2 by a synthetic microbial community comprising Clostridium, Dehalobacter, and Desulfatiglans09/01/2019
- Contamination trends and factors affecting the transfer of hexabromocyclododecane diastereomers, tetrabromobisphenol A, and 2,4,6-Tribromophenol (cas 118-79-6) to breast milk in Japan☆08/31/2019
- Electrochemical enhanced photocatalysis to the 2,4,6 Tribromophenol flame retardant degradation08/30/2019
- Environmental concentrations and toxicology of 2,4,6-Tribromophenol (cas 118-79-6) (TBP)☆08/29/2019
- Simultaneous removal of 2,4,6-Tribromophenol (cas 118-79-6) from water and bromate ion minimization by ozonation08/28/2019
- Phytotoxicity and genotoxicity evaluation of 2,4,6-Tribromophenol (cas 118-79-6) solution treated by UV-based oxidation processes08/27/2019
- Debromination of 2,4,6-Tribromophenol (cas 118-79-6) and bromate ion minimization in Water by catalytic ozonation08/26/2019