Melting point :236.5°C
Boiling point :542.04°C (rough estimate)
Density :1.7800 (estimate)
refractive index :1.7200 (rough estimate)
solubility :Chloroform (Slightly, Heated), Methanol (Slightly)
form :Solid
color :Off-White to Pale Yellow
Water Solubility :0.001355ug/L(22.5 ºC)
Henry's Law Constant :7.0×10^-1 mol/(m³Pa) at 25℃, Duchowicz et al. (2020)
EPA Substance Registry System :1,2,3,4,6,7,8-Heptachlorodibenzofuran (67562-39-4)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H301 Toxic if swalloed Acute toxicity,oral Category 3 Danger P264, P270, P301+P310, P321, P330,P405, P501 H319 Causes serious eye irritation Serious eye damage/eye irritation Category 2A Warning P264, P280, P305+P351+P338,P337+P313P H413 May cause long lasting harmful effects to aquatic life Hazardous to the aquatic environment, long-term hazard Category 4
Precautionary statements:	P264 Wash hands thoroughly after handling. P264 Wash skin thouroughly after handling. P270 Do not eat, drink or smoke when using this product. P280 Wear protective gloves/protective clothing/eye protection/face protection. P301+P310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician. P305+P351+P338 IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continuerinsing. P321 Specific treatment (see … on this label). P330 Rinse mouth. P405 Store locked up. P501 Dispose of contents/container to..…