Search results
Results from the WOW.Com Content Network
A naphthalene molecule can be viewed as the fusion of a pair of benzene rings. (In organic chemistry, rings are fused if they share two or more atoms.) As such, naphthalene is classified as a benzenoid polycyclic aromatic hydrocarbon (PAH). [19] The eight carbon atoms that are not shared by the two rings carry one hydrogen atom each.
English: Naphthalene is an organic compound with formula C 10H 8. It is the simplest polycyclic aromatic hydrocarbon, and is a white crystalline solid with a characteristic odour that is detectable at concentrations as low as 0.08 ppm by mass. As an aromatic hydrocarbon, naphthalene's structure consists of a fused pair of benzene rings.
The development of napalm was precipitated by the use of jellied gasoline mixtures by the Allied forces during World War II. [5] Latex, used in these early forms of incendiary devices, became scarce, since natural rubber was almost impossible to obtain after the Japanese army captured the rubber plantations in Malaya, Indonesia, Vietnam, and Thailand.
Both naphthalene and 1,4-dichlorobenzene undergo sublimation, meaning that they transition from a solid state directly into a gas; this gas is toxic to moths and moth larvae. [ 1 ] Due to the health risks of 1,4-dichlorobenzene, and flammability of naphthalene, other substances like camphor are sometimes used.
A railway locomotive using solid naphthalene was built by Schneider-Creusot in France in 1913. This had no relation to the naphtha engine. It was a 70 bhp internal combustion engine, similar to a petrol-paraffin engine, which operated as a petrol engine and once started and warmed up could be switched to naphthalene simply as a cheaper fuel ...
Here's what 40 celebrities who have been famous since the 1970s look like today, from Bruce Springsteen to Paul McCartney, Madonna, Diana Ross, and Mick Jagger.
We’ve revisited these historic scenes to take photos of what they look like today. Use the slider to compare then and now. Flourish Studio. Steve Wilson swilson@star-telegram.com.
Related: Human Remains Identified as Portland Teenager Who Went Missing 54 Years Ago State Trooper Ian Keck also shared at the press conference that identifying Ruth was a key step in the ...