from the GNU version of the Collaborative International Dictionary of English.

  • noun (Chem.) That variety of xylene (C6H4(CH3)2) in which the two methyl groups are in the ortho position; a colorless, liquid, combustible hydrocarbon resembling benzene.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun organic chemistry An aromatic hydrocarbon based on benzene with two methyl substituents bonded to adjacent carbon atoms in the aromatic ring (the ortho configuration).


from Wiktionary, Creative Commons Attribution/Share-Alike License

ortho- +‎ xylene


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  • If you photooxidize orthoxylene, with it's two adjacent methyl groups, when the ring opens, a certain percentage of time you get biacetyl.

    Hot Buttered James Killus 2008

  • Annual aromatics growth rates are pro - jected at 4 to 5 percent in Europe and 5 to 7 percent Left, top: With 11 aromatics plants, ExxonMobil Chemical is the world's largest producer of paraxylene, orthoxylene and benzene, fundamental materials for a wide range of consumer products.

    Recently Uploaded Slideshows 2009

  • EBIT margin dollars were negatively impacted by approximately $5 million as higher cost yearend inventories, primarily phthalic anhydride, orthoxylene and carbon black feedstock, were processed. Home Page 2009

  • At present, CheMatch offers members -- i.e., registered buyers and sellers -- the ability to trade benzene, mixed xylenes, para xylene, orthoxylene, toluene, methanol, mtbe, and styrene monomer.

    Purchasing - Top Stories 2009


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