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1,4-Dichlorobenzene (1,4-DCB, p-DCB, or para-dichlorobenzene, sometimes abbreviated as PDCB or para) is an aryl chloride and isomer of dichlorobenzene with the formula C 6 H 4 Cl 2. This colorless solid has a strong odor. The molecule consists of a benzene ring with two chlorine atoms (replacing hydrogen atoms) on opposing sites of the ring.
As these products originally contained para-dichlorobenzene (pDCB) they may also be called para blocks. Besides disinfecting, the purpose of these materials is to deodorize restroom urinals. [ 1 ] They are placed above the urinal drain, often in the confines of a small plastic device called a urinal screen that prevents loss down the drain when ...
The latter chemical is also variously labeled as para-dichlorobenzene, p-dichlorobenzene, pDCB, or PDB, making it harder to identify unless all these names and initialisms are known to a potential purchaser. Both of these formulations have the strong, pungent, sickly-sweet odor often associated with mothballs.
The Super Bowl — the NFL's championship game — pits the winner of the American Football Conference against the winner of the National Football Conference, with the victor receiving the Vince ...
Police in Thailand have detained the British husband of Lamduan Armitage, the Thai woman whose body was found in the Yorkshire Dales more than 20 years ago. Walkers discovered her half-naked body ...
The U.S. Army helicopter that collided with an passenger jet near Washington, D.C., had an advanced surveillance system turned off.
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From January 2008 to December 2012, if you bought shares in companies when William C. Ballard, Jr. joined the board, and sold them when he left, you would have a -5.2 percent return on your investment, compared to a -2.8 percent return from the S&P 500.