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The physical properties of the isomers of xylene differ slightly. The melting point ranges from −47.87 °C (−54.17 °F) (m-xylene) to 13.26 °C (55.87 °F) (p-xylene)—as usual, the para isomer's melting point is much higher because it packs more readily in the crystal structure. The boiling point for each isomer is around 140 °C (284 °F).
o-Xylene (ortho-xylene) is an aromatic hydrocarbon with the formula C 6 H 4 (CH 3) 2, with two methyl substituents bonded to adjacent carbon atoms of a benzene ring (the ortho configuration). It is a constitutional isomer of m -xylene and p -xylene, the mixture being called xylene or xylenes. o -Xylene is a colourless slightly oily flammable ...
p-Xylene (para-xylene) is an aromatic hydrocarbon. It is one of the three isomers of dimethylbenzene known collectively as xylenes . The p- stands for para- , indicating that the two methyl groups in p -xylene occupy the diametrically opposite substituent positions 1 and 4.
It is highly recommend that you seek the Material Safety Datasheet (MSDS) for this chemical from a reliable source and follow its directions. MATHESON TRI-GAS, INC. Structure and properties. [edit] Structure and properties. Index of refraction, nD. 1.4958 at 20 °C. Dielectric constant, εr. 2.2 ε0at 20 °C.
m-Xylene (meta-xylene) is an aromatic hydrocarbon. It is one of the three isomers of dimethylbenzene known collectively as xylenes . The m- stands for meta- , indicating that the two methyl groups in m -xylene occupy positions 1 and 3 on a benzene ring.
This page provides supplementary chemical data on m-Xylene. Material Safety Data Sheet ... Structure and properties Index of refraction, n D: 1.49722 at 20 °C
Structural diagrams of the BTX hydrocarbons. In the petroleum refining and petrochemical industries, the initialism BTX refers to mixtures of benzene, toluene, and the three xylene isomers, all of which are aromatic hydrocarbons. The xylene isomers are distinguished by the designations ortho – (or o –), meta – (or m –), and para – (or ...
This page provides supplementary chemical data on o-Xylene. Material Safety Data Sheet ... Structure and properties Index of refraction, [1] n D: 1.5058 at 20°C