Melting point :66-68 °C(lit.)
Boiling point :302.37°C (rough estimate)
Density :1.5015 (rough estimate)
vapor pressure :0.017Pa at 20℃
refractive index :1.4571 (estimate)
storage temp. :2-8°C
solubility :soluble in Chloroform
form :powder to lump
color :White to Almost white
Water Solubility :decomposes
Sensitive :Moisture Sensitive
BRN :610823
InChIKey :NJMOHBDCGXJLNJ-UHFFFAOYSA-N
CAS DataBase Reference :1204-28-0(CAS DataBase Reference)
NIST Chemistry Reference :Phthalic , 4-(chloroformyl)-,anhydride(1204-28-0)
EPA Substance Registry System :5-Isobenzofurancarbonyl chloride, 1,3-dihydro-1,3-dioxo- (1204-28-0)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes 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. 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. P363 Wash contaminated clothing before reuse.