• molecule
  • A team of researchers led by Spanish scientists has published their discovery of the complex molecule naphthalene in an interstellar star-forming cloud, indicating many prebiotic organic molecules necessary for life as we know it could have been present when our own solar system formed. (slashdot.org)
  • Oxidation
  • Oxidation with O 2 in the presence of a vanadium catalyst gives phthalic anhydride: C10H8 + 4.5 O2 → C6H4(CO)2O + 2 CO2 + 2 H2O This reaction is the basis of the main use of naphthalene. (wikipedia.org)
  • Owing
  • Owing to the rigidity of the naphthalene skeleton, these substituents on the 1- and 8-positions are constrained to be relatively close 2.5 Å, which is within the van der Waals radius for many atoms. (wikipedia.org)
  • hydrogen
  • There's still no information about other oil-related air toxic chemicals such as naphthalene or hydrogen sulfide, offshore. (wordnik.com)
  • The chemical formula making up naphthalene is 10 parts carbon and eight parts hydrogen, and it has a vapor density of 4.4. (reference.com)
  • toxic
  • As product recalls pile up, consumers risk getting lost) "It is really troubling that you've got this form of naphthalene that's produced in millions of pounds a year and we don't have some of the basic information about how toxic it is," said Erik Olson, an expert at the Pew Charitable Trusts, which is advocating an overhaul of U.S. chemical laws. (wordnik.com)
  • high
  • Naphthalene can be hydrogenated under high pressure in the presence of metal catalysts to give 1,2,3,4-tetrahydronaphthalene(C 10H 12), also known as tetralin. (wikipedia.org)
  • particular
  • This difference, established by X-ray diffraction, is consistent with the valence bond model in naphthalene and in particular, with the theorem of cross-conjugation. (wikipedia.org)
  • Regions
  • The discovery that a special kind of naphthalene with a single extra proton is out in space is important to those studying interstellar regions for many reasons. (wordnik.com)
  • example
  • For example, chlorination and bromination of naphthalene proceeds without a catalyst to give 1-chloronaphthalene and 1-bromonaphthalene, respectively. (wikipedia.org)
  • known
  • This map displays locations where Naphthalene, 1-Methylnapthalene, 2-Methylnapthalene is known to be present. (cdc.gov)
  • strong
  • 1,5-Dihydroxynaphthalene is prepared from naphthalene-1,5-disulfonic acid by hydrolysis with strong base followed by acidification. (wikipedia.org)
  • properties
  • 1-Methylnaphthalene and 2-methylnaphthalene are expected to act like naphthalene in air, water, or soil because they have similar chemical and physical properties. (cdc.gov)
  • name
  • With a pKa of 12.34 for its conjugate acid in aqueous solution, 1,8-bis(dimethylamino)naphthalene is one of the strongest organic bases - However, it only absorbs protons slowly-hence the trade name. (wikipedia.org)
  • forms
  • With alkali metals, naphthalene forms the dark blue-green radical anion salts such as sodium naphthalenide, Na+C10H− 8. (wikipedia.org)
  • levels
  • Air samples collected in the apartment on charcoal and analyzed by gas chromatography and flame ionization revealed detectable levels of naphthalene (20 parts per billion). (cdc.gov)