Editing Pyridine (section)

===Physical properties===
[[File:Kristallstruktur Pyridin.png|thumb|left|Crystal structure of pyridine]]

Pyridine is [[diamagnetism|diamagnetic]]. Its [[critical point (thermodynamics)|critical parameters]] are: pressure 5.63&nbsp;MPa, temperature 619&nbsp;K and volume 248&nbsp;cm<sup>3</sup>/mol.<ref>[[#Haynes|Haynes]], p.&nbsp;6.80</ref> In the temperature range 340–426&nbsp;°C its vapor pressure ''p'' can be described with the [[Antoine equation]]
:<math>\log_{10} p = A-\frac{B}{C+T}</math>
where ''T'' is temperature, ''A''&nbsp;=&nbsp;4.16272, ''B''&nbsp;=&nbsp;1371.358&nbsp;K and ''C''&nbsp;=&nbsp;−58.496&nbsp;K.<ref>{{cite journal|last1=McCullough|first1=J. P.|last2=Douslin|first2=D. R.|last3=Messerly|first3=J. F.|last4=Hossenlopp|first4=I. A.|last5=Kincheloe|first5=T. C.|last6=Waddington|first6=Guy|title=Pyridine: Experimental and Calculated Chemical Thermodynamic Properties between 0 and 1500&nbsp;K.; a Revised Vibrational Assignment|journal=Journal of the American Chemical Society|volume=79|pages=4289|year=1957|doi=10.1021/ja01573a014|issue=16}}</ref>