P-Xylene
1999126
216838728
2008-06-03T13:25:05Z
Rifleman 82
1255637
Reverted edits by [[Special:Contributions/Wkltan|Wkltan]] ([[User talk:Wkltan|talk]]) to last version by 123.195.207.78
{{lowercase|p-Xylene}}
{{Chembox new
| Name = ''p''-Xylene
| ImageFile = p-Xylene.png
| ImageName = p-Xylene
| ImageSize = 200px
| ImageFile1 = p-xylene-spaceFilling.png
| ImageSize1 = 150px
| ImageName1 = p-xylene 3D diagram
| OtherNames = ''p''-Xylol<br />1,4-Dimethylbenzene
| Section1 = {{Chembox Identifiers
| CASNo = 106-42-3
| RTECS = ZE2625000
| SMILES = CC1=CC=C(C)C=C1
}}
| Section2 = {{Chembox Properties
| Appearance = Colorless liquid<br>colorless crystalline solid
| Formula = C<sub>8</sub>H<sub>10</sub>
| MolarMass = 106.16 g/mol
| BoilingPtC = 138.35
| MeltingPtC = 13.2
| Density = 0.861 g/mL
| RefractIndex = 1.49582
| Solubility = insoluble
| Solubility1 = very soluble
| Solvent1 = ethanol
| Solubility2 = very soluble
| Solvent2 = diethyl ether
| Viscosity = 0.7385 c[[Poise|P]] at 0 °C<br>0.6475 c[[Poise|P]] at 20 °C
| Dipole = 0.07 [[Debye|D]]
}}
| Section7 = {{Chembox Hazards
| ExternalMSDS = [http://www.jtbaker.com/msds/englishhtml/x2600.htm External MSDS]
| FlashPt = 25 °C
| MainHazards = Harmful or fatal if swallowed. Vapor harmful. Flammable liquid and vapor.
| NFPA-H = 1
| NFPA-F = 3
| NFPA-R = 0
| NFPA-O
| RPhrases = {{R10}} {{R20}} {{R21}} {{R36}} {{R38}}
| SPhrases = {{S25}}
}}
| Section8 = {{Chembox Related
| Function = [[aromatic hydrocarbon|aromatic<br />hydrocarbons]]
| OtherFunctn = [[benzene]]<br />[[toluene]]<br />[[o-xylene]]<br />[[m-xylene]]
}}
}}
'''''p''-Xylene''' is an [[aromatic hydrocarbon]], based on [[benzene]] with two [[methyl]] [[substituent]]s. The “p” stands for ''para'', identifying the location of the methyl groups as across from one another.
It is an isomer of [[xylene]]. Other isomers include [[O-Xylene|''o''-xylene]] and [[M-Xylene|''m''-xylene]].
''p''-Xylene is used on a large scale for the manufacture of [[terephthalic acid]] for [[polyester]]. Its [[polymer]] is known as [[parylene]].
==References==
{{Unreferenced|date =September 2007}}
<references/>
[[Category:Aromatic hydrocarbons|Xylene, m-]]
{{hydrocarbon-stub}}
[[pt:P-xileno]]
[[vi:M-Xylen]]
[[zh:间二甲苯]]