Melting point :98 °C
Boiling point :234.6°C (rough estimate)
Density :1.2143 (rough estimate)
vapor density :5.2 (vs air)
vapor pressure :<0.01 mm Hg ( 20 °C)
refractive index :1.4447 (estimate)
Flash point :156 °C
storage temp. :under inert gas (nitrogen or Argon) at 2-8°C
solubility :soluble in Toluene,Benzene
form :powder to crystal
color :White to Almost white
Water Solubility :REACTS
Sensitive :Moisture Sensitive
BRN :82341
Exposure limits :ACGIH: TWA 0.01 mg/m3
OSHA: TWA 0.25 ppm(1 mg/m3)
NIOSH: IDLH 10 mg/m3; TWA 0.25 ppm(1 mg/m3) CAS DataBase Reference :935-79-5(CAS DataBase Reference)
NIST Chemistry Reference :cis-1,2,3,6-Tetrahydrophthalic anhydride(935-79-5)
EPA Substance Registry System :1,3-Isobenzofurandione, 3a,4,7,7a-tetrahydro-, (3aR,7aS)-rel- (935-79-5)

Symbol(GHS):
Signal word:	Danger
Hazard statements:	Code Hazard statements Hazard class Category Signal word Pictogram P-Codes H317 May cause an allergic skin reaction Sensitisation, Skin Category 1 Warning P261, P272, P280, P302+P352,P333+P313, P321, P363, P501 H318 Causes serious eye damage Serious eye damage/eye irritation Category 1 Danger P280, P305+P351+P338, P310 H334 May cause allergy or asthma symptoms or breathing difficulties if inhaled Sensitisation, respiratory Category 1 Danger P261, P285, P304+P341, P342+P311,P501 H412 Harmful to aquatic life with long lasting effects Hazardous to the aquatic environment, long-term hazard Category 3 P273, P501
Precautionary statements:	P261 Avoid breathing dust/fume/gas/mist/vapours/spray. P273 Avoid release to the environment. 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.