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Pentachlorophenol (PCP) is an organochlorine compound used as a pesticide and a disinfectant.First produced in the 1930s, it is marketed under many trade names. [5] It can be found as pure PCP, or as the sodium salt of PCP, the latter of which dissolves easily in water.
Note 2: A liquid in Division 6.1 meeting criteria for Packing Group I, Hazard Zones A or B stated in paragraph (a)(2) of this section is a material poisonous by inhalation subject to the additional hazard communication requirements in 49CFR 172.203(m)(3), 49CFR 172.313 and Table 1 of 49CFR 172.504(e) of this subchapter.
In 2008, concentrations as high as 35 ng/m 3, 10 times higher than the EPA guideline limit of 3.4 ng/m 3, have been documented inside some houses in the U.S. [31] Volatilization of PCBs in soil was thought to be the primary source of PCBs in the atmosphere, but research suggests ventilation of PCB-contaminated indoor air from buildings is the ...
The LSD is taken first, followed by the MDMA 4 hours later and then 2C-B is taken 2 hours after the MDMA ( so 6 hours after the LSD ). MDMA can be replaced by 6-APB, 5-APB, 6-MAPB or 5-MAPB, in this case the Empathogen is taken 2 hours after the LSD, while 2C-B may be replaced by 2C-C, 2C-D or 2C-B-FLY.
A determining factor for the long-range transport is the fraction of a POP that is adsorbed on aerosols. In adsorbed form it is – as opposed to the gas phase – protected from photo-oxidation, i.e. direct photolysis as well as oxidation by OH radicals or ozone. [11] [12]
For example, 1 / 4 , 5 / 6 , and −101 / 100 are all irreducible fractions. On the other hand, 2 / 4 is reducible since it is equal in value to 1 / 2 , and the numerator of 1 / 2 is less than the numerator of 2 / 4 . A fraction that is reducible can be reduced by dividing both the numerator ...
4-Methyl-PCP, 4'-Methyl-PCP and 4''-Methyl-PCP (left to right) However, since the widespread sale of these compounds as grey-market designer drugs, nearly all such compounds that have come to prominence either have a bare cyclohexyl ring or a 2-ketocyclohexyl ring, while the piperidine is replaced by a variety of alkyl or cycloalkyl amines and ...
Phencyclidine or phenylcyclohexyl piperidine (PCP), also known in its use as a street drug as angel dust among other names, is a dissociative anesthetic mainly used recreationally for its significant mind-altering effects. [1] [4] PCP may cause hallucinations, distorted perceptions of sounds, and violent behavior.