Melting point :-41 °C
Melting point :-42°C
Boiling point :115,2°C
Boiling point :114.4 °C(lit.)
Density :1.05 g/mL at 25 °C(lit.)
Density :d = 1,05
vapor pressure :26.7 hPa (25 °C)
refractive index :n20/D 1.506(lit.)
Flash point :68 °F
storage temp. :no restrictions.
solubility :1000g/l soluble
form :Liquid
pka :pK1:5.83(+1) (25°C)
color :Colorless
PH :8.81 (H2O)
explosive limit :1.8-12.4%(V)
Water Solubility :Soluble in water, alcohol, ether, acetone, and benzene.
BRN :114377
Henry's Law Constant :4.2×10⁰ mol/(m³Pa) at 25℃, Hiatt (2013)
InChI :1S/C5H5N/c1-2-4-6-5-3-1/h1-5H/i1D,2D,3D,4D,5D
InChIKey :JUJWROOIHBZHMG-RALIUCGRSA-N
SMILES :[2H]c1nc([2H])c([2H])c([2H])c1[2H]
CAS DataBase Reference :7291-22-7(CAS DataBase Reference)
EPA Substance Registry System :Pyridine-d5 (7291-22-7)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H225 Highly Flammable liquid and vapour Flammable liquids Category 2 Danger P210,P233, P240, P241, P242, P243,P280, P303+ P361+P353, P370+P378,P403+P235, P501 H315 Causes skin irritation Skin corrosion/irritation Category 2 Warning P264, P280, P302+P352, P321,P332+P313, P362 H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P
Precautionary statements:	P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P280 Wear protective gloves/protective clothing/eye protection/face protection. P301+P312 IF SWALLOWED: call a POISON CENTER or doctor/physician IF you feel unwell. P303+P361+P353 IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.