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Bromochlorodifluoromethane (BCF), also referred to by the code numbers Halon 1211 and Freon 12B1, is a haloalkane with the chemical formula C F 2 Cl Br. It is used for fire suppression, especially for expensive equipment or items that could be damaged by the residue from other types of extinguishers. [ 1 ]
Fugacity and BCF relate to each other in the following equation: = [6] where Z Fish is equal to the Fugacity capacity of a chemical in the fish, P Fish is equal to the density of the fish (mass/length 3), BCF is the partition coefficient between the fish and the water (length 3 /mass) and H is equal to the Henry's law constant (Length 2 /Time 2) [6]
The rate constant for the vapor phase reaction of heptachlorodibenzo-p-dioxin with photochemically produced hydroxyl radicals has been estimated to be 1.3x10 −12 cu cm/molecule-sec at 25 °C which corresponds to an atmospheric half-life of 12.3 days at an atmospheric concentration of 5x10 5 hydroxyl radicals per cu cm.
Warmer, ice-free conditions in the southeast Bering Sea are roughly 200 times more likely now than before humans began burning planet-warming fossil fuels.
1,4-butane sultone is a six-membered δ-sultone and the cyclic ester of 4-hydroxybutanesulfonic acid.As a sulfo-alkylating agent, 1,4-butanesultone is used to introduce the sulfobutyl group (–(CH 2) 4 –SO 3 −) into hydrophobic compounds possessing nucleophilic functional groups, for example hydroxy groups (as in the case of β-cyclodextrin [1]) or amino groups (as in the case of ...
1,2,3,4-Butanetetracarboxylic acid is an organic compound with the formula HO 2 CCH 2 CH(CO 2 H)CH(CO 2 H)CH 2 CO 2 H. It is one of the simplest stable tetracarboxylic acids. The compound exists as two diastereomers, meso and the (R,R)/(S,S) pair. All are white solids. The compound is produced by oxidation of tetrahydrophthalic anhydride. [1]
Infobox references. 1,5-Dihydroxynaphthalene is an organic compound with the formula C 10 H 6 (OH) 2. It is one of several isomers of dihydroxy naphthalene. A white solid, degraded samples often appear grey to light brown solid [1] that are soluble in polar organic solvents. It is a precursor to certain dyes.
Infobox references. 1,5-Diazabicyclo [4.3.0]non-5-ene (DBN) is a chemical compound with the formula C 7 H 12 N 2. [1] It is an amidine base used in organic synthesis. A related compound with related functions is 1,8-diazabicyclo [5.4.0]undec-7-ene (DBU). The relatively complex nature of the formal names for DBU and DBN (hence the common use of ...