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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.
1,2-Dichlorobenzene, or orthodichlorobenzene (ODCB), is an aryl chloride and isomer of dichlorobenzene with the formula C 6 H 4 Cl 2. This colourless liquid is poorly soluble in water but miscible with most organic solvents. It is a derivative of benzene, consisting of two adjacent chlorine atoms.
The British Reserve Fleet was a repository for British decommissioned warships from about 1800 until 1960. [5]The United States National Defense Reserve Fleet (NDRF), consisted of about fifty World War II ships that were moored in Suisun Bay (Suisun Bay Reserve Fleet) near San Francisco since the 1950s or '60s. [6]
Aircraft carriers stored at the NISMF in Bremerton, 2012.From left to right: Independence, Kitty Hawk, Constellation and Ranger. A Naval Inactive Ship Maintenance Facility (NISMF) is a facility owned by the United States Navy as a holding facility for decommissioned naval vessels, pending determination of their final fate.
Pacific Reserve Fleet, San Diego was a part of the United States Navy reserve fleets, also called a mothball fleet, used to store surplus ships after World War II. Pacific Reserve Fleet, San Diego was near Naval Base San Diego in San Diego, California. [1] Some ships in the fleet were reactivated for the Korean War and Vietnam War.
Dick Tracy vs. Cueball is a 1946 American action film based on the 1930s comic strip character of the same name created by Chester Gould. [2] The film stars Morgan Conway as Dick Tracy in the second installment of the Dick Tracy film series released by RKO Radio Pictures. The villain, Cueball, is a murderous diamond thief who gets his monicker ...