Melting point :<25 °C
Boiling point :62-65 °C/15 mmHg (lit.)
Density :0.975 g/mL at 25 °C (lit.)
vapor pressure :2.28hPa at 25℃
refractive index :n20/D 1.549(lit.)
Flash point :125 °F
storage temp. :-20°C
solubility :Chloroform, Methanol (Slightly)
form :Liquid
pka :pK1:5.62(+1) (25°C)
color :Clear colorless to yellow-brown
Water Solubility :29 G/L (20 ºC)
BRN :104506
Henry's Law Constant :1.2×10⁰ mol/(m³Pa) at 25℃, Duchowicz et al. (2020)
Stability :Stable. Incompatible with strong acids, strong oxidizing agents.
InChI :1S/C7H7N/c1-2-7-3-5-8-6-4-7/h2-6H,1H2
InChIKey :KFDVPJUYSDEJTH-UHFFFAOYSA-N
SMILES :C=Cc1ccncc1
LogP :1.36 at 20℃
CAS DataBase Reference :100-43-6(CAS DataBase Reference)
NIST Chemistry Reference :Pyridine, 4-ethenyl-(100-43-6)
EPA Substance Registry System :4-Vinylpyridine (100-43-6)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H226 Flammable liquid and vapour Flammable liquids Category 3 Warning H301 Toxic if swalloed Acute toxicity,oral Category 3 Danger P264, P270, P301+P310, P321, P330,P405, P501 H314 Causes severe skin burns and eye damage Skin corrosion/irritation Category 1A, B, C Danger P260,P264, P280, P301+P330+ P331,P303+P361+P353, P363, P304+P340,P310, P321, P305+ P351+P338, P405,P501 H317 May cause an allergic skin reaction Sensitisation, Skin Category 1 Warning P261, P272, P280, P302+P352,P333+P313, P321, P363, P501 H330 Fatal if inhaled Acute toxicity,inhalation Category 1, 2 Danger P260, P271, P284, P304+P340, P310,P320, P403+P233, P405, P501 H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning H410 Very toxic to aquatic life with long lasting effects Hazardous to the aquatic environment, long-term hazard Category 1 Warning P273, P391, P501
Precautionary statements:	P210 Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P233 Keep container tightly closed. P240 Ground/bond container and receiving equipment. P241 Use explosion-proof electrical/ventilating/lighting/…/equipment. P242 Use only non-sparking tools. P243 Take precautionary measures against static discharge. P260 Do not breathe dust/fume/gas/mist/vapours/spray. P264 Wash hands thoroughly after handling. P264 Wash skin thouroughly after handling. P270 Do not eat, drink or smoke when using this product. P271 Use only outdoors or in a well-ventilated area. P272 Contaminated work clothing should not be allowed out of the workplace. P273 Avoid release to the environment. P280 Wear protective gloves/protective clothing/eye protection/face protection. P284 Wear respiratory protection. P301+P330+P331 IF SWALLOWED: Rinse mouth. Do NOT induce vomiting. P303+P361+P353 IF ON SKIN (or hair): Remove/Take off Immediately all contaminated clothing. Rinse SKIN with water/shower. P333+P313 IF SKIN irritation or rash occurs: Get medical advice/attention. P370+P378 In case of fire: Use … for extinction. P391 Collect spillage. Hazardous to the aquatic environment P403+P233 Store in a well-ventilated place. Keep container tightly closed. P403+P235 Store in a well-ventilated place. Keep cool. P405 Store locked up. P501 Dispose of contents/container to..…