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  • 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)
  • 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)
  • high
  • The compound 1,8-bis(dimethylboryl)naphthalene is known as hydride sponge because of its high affinity for hydride. (wikipedia.org)
  • 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)
  • 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)
  • position
  • Two isomers are possible for mono-substituted naphthalenes, corresponding to substitution at an alpha or beta position. (wikipedia.org)
  • This compound is a diamine in which the two dimethylamino groups are attached on the same side (peri position) of a naphthalene ring. (wikipedia.org)
  • forms
  • With alkali metals, naphthalene forms the dark blue-green radical anion salts such as sodium naphthalenide, Na+C10H− 8. (wikipedia.org)
  • close
  • Naphthalene can dissolve in water to a limited degree and may be present in drinking water from wells close to hazardous waste sites and landfills. (cdc.gov)
  • 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)