Naphthenic acid by a general formula CH O, where "n" indicates the carbon number and "z" specifies a homologous series. The "z" is equal to 0 for saturated, acyclic acids and increases to 2 in monocyclic naphthenic acids, to 4 in bicyclic naphthenic acids, to 6 in tricyclic acids, and to 8 in tetracyclic acids. Salts of naphthenic acids, called naphthenates, are widely used as hydrophobic sources of metal ions in diverse applications.Aluminium salts of naphthenic acid and palmitic acid were combined during World War II to produce napalm. The word "napalm" is derived from the words naphthenic acid and palmitic acid.
The Weapon Shops of Isher The Weapon Shops of Isher The Weapon Shops of Isher is a science fiction novel by Canadian writer A. E. van Vogt, first published in 1951. The novel is a fix-up created from three previously published short stories about the Weapon Shops and Isher civilization: "The Weapon Shops of Isher" and its sequel "The Weapon Makers" detail the workings of Isher civilization and the adventures of Robert Hedrock, The One Immortal Man, as he keeps it in balance in the face of attempts by the Weapon Makers, who have forgotten their purpose as a permanent opposition, and the strong government