Okamura, H. published the artcileEcotoxicity of the degradation products of triphenylborane pyridine (TPBP) antifouling agent, Category: pyridine-derivatives, the publication is Chemosphere (2009), 74(9), 1275-1278, database is CAplus and MEDLINE.
Triphenylborane pyridine (TPBP) is an alternative to organotin antifouling compounds This work aimed to identify the unknown Peak #1, and to evaluate the ecotoxicity of TPBP and its degradation products. Peak #1 was produced from TPBP dissolved in acetonitrile under UV-A photolysis using a high-pressure Hg lamp. The Peak #1 fraction was purified using 2-step column chromatog. from a TPBP-acetonitrile solution The major compound of the fraction was identified as being biphenyl from the 1H NMR and 13C NMR spectra. The ecotoxicity of 4 degradation products (diphenylborane hydroxide, phenylborane dihydroxide, phenol, and biphenyl) and TPBP towards 2 marine planktons were assessed. The 48 h LC50 values of the crustacean, Artemia salina, were 0.13 mg L-1 for TPBP, 14 mg L-1 for biphenyl, 17 mg L-1 for phenol, and >50 mg L-1 for the other degradation products. The 72 h EC50 values of the diatom, Skeletonema costatum, were 0.0022 mg L-1 for TPBP, 1.2 mg L-1 for biphenyl, and >2 mg L-1 for the other degradation products. Thus, the ecotoxicity of biphenyl and the other degradation products were not high compared to the parent compound, TPBP.
Chemosphere published new progress about 971-66-4. 971-66-4 belongs to pyridine-derivatives, auxiliary class Pyridine,Benzene, name is Triphenyl(pyridin-1-ium-1-yl)borate, and the molecular formula is C23H20BN, Category: pyridine-derivatives.
Referemce:
https://en.wikipedia.org/wiki/Pyridine,
Pyridine | C5H5N – PubChem