Melting point :88-91 °C(lit.)
Boiling point :256 °C(lit.)
Density :1.01 g/mL at 20 °C
bulk density :500-600kg/m3
vapor pressure :<1 mm Hg ( 20 °C)
refractive index :1.4801
Flash point :293 °F
storage temp. :Store below +30°C.
solubility :H₂O: 0.1 M at 20 °C, clear, colorless
form :crystalline
pka :6.953(at 25℃)
color :white
Specific Gravity :1.03
Odor :Amine like
PH Range :9.5 - 11
PH :9.5-11.0 (25℃, 50mg/mL in H2O)
Water Solubility :633 g/L (20 ºC)
Sensitive :Hygroscopic
λmax :λ: 260 nm Amax: 0.10
λ: 280 nm Amax: 0.10 Merck :14,4912
BRN :103853
Dielectric constant :23.0（Ambient）
Stability :Stable. Incompatible with acids, strong oxidizing agents. Protect from moisture.
InChIKey :RAXXELZNTBOGNW-UHFFFAOYSA-N
LogP :-0.02 at 25℃
CAS DataBase Reference :288-32-4(CAS DataBase Reference)
NIST Chemistry Reference :1H-Imidazole(288-32-4)
EPA Substance Registry System :Imidazole (288-32-4)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H302 Harmful if swallowed Acute toxicity,oral Category 4 Warning P264, P270, P301+P312, P330, 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
Precautionary statements:	P260 Do not breathe dust/fume/gas/mist/vapours/spray. 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.