Melting point :47-51 °C(lit.)
Boiling point :75-85 °C20 mm Hg(lit.)
Density :1.294
refractive index :1.4738 (estimate)
Flash point :76 °C
storage temp. :Sealed in dry,Room Temperature
pka :-0.53±0.33(Predicted)
form :powder to crystal
color :Light orange to Yellow to Green
BRN :112261
InChI :1S/C6H4N2O/c1-2-4-6-5(3-1)7-9-8-6/h1-4H
InChIKey :AWBOSXFRPFZLOP-UHFFFAOYSA-N
SMILES :c1ccc2nonc2c1
CAS DataBase Reference :273-09-6(CAS DataBase Reference)

Symbol(GHS):
Signal word:	Warning
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes 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 H335 May cause respiratory irritation Specific target organ toxicity, single exposure;Respiratory tract irritation Category 3 Warning
Precautionary statements:	P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P270 Do not eat, drink or smoke when using this product. P271 Use only outdoors or in a well-ventilated area. P280 Wear protective gloves/protective clothing/eye protection/face protection. P302+P352 IF ON SKIN: wash with plenty of soap and water. P304+P340 IF INHALED: Remove victim to fresh air and Keep at rest in a position comfortable for breathing. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P312 Call a POISON CENTER or doctor/physician if you feel unwell. P330 Rinse mouth. P403+P233 Store in a well-ventilated place. Keep container tightly closed.