dibromomethane


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dibromomethane

[dī¦brō·mō′me‚thān]
(organic chemistry)
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Experimental induction of larval metamorphosis by a naturally-produced halogenated compound (dibromomethane) in the invasive mollusc Crepidula fornicata (L.).
In contrast, the ocean is known to be a primary source for bromoform (CH[Br.sub.3]) and dibromomethane (C[H.sub.2][Br.sub.2]; e.g., Goodwin et al.
Compound 2d was obtained by treating dibromomethane (4 equivalents) with 1, while compound 2e was obtained by treating statistical amount of dibromomethane with 1 and K2CO3 in chloroform acting as solvent.
Refineries also produce important intermediates in the manufacture of chlorinated pesticides and solvents, chloroform, bromoform, dichloromethane, bromodichloromethane, dibromomethane, 1,1-dichloroethane, 1,1,2,2-tetrachloroethane, 1,2-dichloropropane, and trans-1,3-dichloropropene [1], while hexachlorobutadiene is released as a by-product in the manufacture of the chlorinated solvents.
([section]) Temperature reported as "room temperature." ** 10 days with dibromomethane (DBM), 15 days with KCl.
International Resource News-June 3, 2013--Albemarle increases global price for dibromomethane and bromochloromethane(C)1994-2013 ENPublishing - http://www.enpublishing.co.uk
The consequence of using waste product Hbr, poor quality n Propyl Alcohol and short batch equipment, is the presence of any number of unacceptable contaminants including a large quantity of free bromine, Hbr, iso-Propyl Bromide, water, dibromopropane, chlorobromo-propane, dibromomethane, methyl t butyl ether, sulpher or bromine salts.
Thus, the UTLS over the oceanic warm pool region is expected to have elevated concentrations of organic halogen species such as dibromomethane (C[H.sub.2][Br.sub.2]), bromoform (CH[Br.sub.3]), and methyl iodide (C[H.sub.3]I).
Dibromomethane, a chemical inducer of larval settlement and metamorphosis of the sea urchin, Strongylocentrotus nudus.
Metamorphosis can be induced in larvae that are competent to metamorphose by a variety of mechanisms, including excess [K.sup.+] (usually in the form of KCl) and dibromomethane (Pechenik and Gee, 1993; Taris et al., 2009).
Analysis of DNA adducts formed in vivo in rats and mice from 1,2-dibromoethane, 1,2-dichloroethane, dibromomethane, and dichloromethane using HPLC/accelerator mass spectrometry and relevance to risk estimates.
(2006) reported that dibromomethane, a volatile metabolite produced by coralline algae (Itoh & Shinya 1994) and the green alga Ulvella lens (Ohshiro et al.