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
orthoposition; a colorless, liquid, combustible hydrocarbon resembling benzene.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun organic chemistry An
aromatic hydrocarbonbased on benzenewith two methyl substituents bondedto adjacent carbon atomsin the aromatic ring(the orthoconfiguration).
from Wiktionary, Creative Commons Attribution/Share-Alike License
If you photooxidize orthoxylene, with it's two adjacent methyl groups, when the ring opens, a certain percentage of time you get biacetyl.
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.
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.
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.