Melting point :137-139 °C (lit.)
Boiling point :270.14°C (rough estimate)
Density :1.4974 (rough estimate)
refractive index :1.4835 (estimate)
storage temp. :Keep in dark place,Sealed in dry,Room Temperature
form :powder to crystal
pka :-2.24±0.20(Predicted)
color :White to Orange to Green
Water Solubility :Optimal solubility in water.
Sensitive :Moisture Sensitive
BRN :125111
CAS DataBase Reference :699-98-9(CAS DataBase Reference)
NIST Chemistry Reference :2,3-Pyridinedicarboxylic anhydride(699-98-9)
EPA Substance Registry System :Furo[3,4-b]pyridine-5,7-dione (699-98-9)

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. P264 Wash hands thoroughly after handling. P264 Wash skin thouroughly after handling. 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. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing.