IUPAC Name: Dipropyl 6-methyl-5,6,7,8-tetrahydrobenzo[f][1,3]benzodioxole-
7,8-dicarboxylate
Synonyms of n-Propyl isomer (CAS NO.83-59-0) : Dipropyl 1,2,3,4-tetrahydro-3-methyl-6,7-methylenedioxynaphthalene-1,2-dicarboxylate ; Dipropyl-7-methyl-5,6,7,8-tetrahydronaphtho[2,3-d][1,3]dioxol-5,6-dicarboxylat ; Naphtho[2,3-d]-1,3-dioxole-5,6-dicarboxylic acid, 5,6,7,8-tetrahydro-7-methyl-, dipropyl ester ; Propyl isome
InChI:InChI=1/C20H26O6/c1-4-6-23-19(21)17-12(3)8-13-9-15-16(26-11-25-15)10-14(13)18(17)20(22)24-7-5-2/h9-10,12,17-18H,4-8,11H2,1-3H3  
CAS NO:83-59-0 
Molecular Formula:C₂₀H₂₆O₆                             
Molecular Weight :362.4168                                             
Molecular Structure :
Index of Refraction: 1.523        
Surface Tension: 42 dyne/cm 
Density: 1.174 g/cm³ 
Flash Point: 201 °C 
Enthalpy of Vaporization: 72.4 kJ/mol 
Boiling Point: 462.8 °C at 760 mmHg 
Vapour Pressure: 9.54E-09 mmHg at 25°C

Poison by skin contact. Moderately toxic by ingestion. Questionable carcinogen with experimental carcinogenic and tumorigenic data. When n-Propyl isomer (CAS NO.83-59-0) is heated to decomposition, it emits acrid smoke and irritating fumes.

Hazard Codes T,N
Risk Statements 22-24-50/53
R22:Harmful if swallowed. 
R24: N-Propyl isomer (CAS NO.83-59-0) is toxic in contact with skin. 
R50/53:Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.
Safety Statements 36/37-45-60-61
S36/37:Wear suitable protective clothing and gloves. 
S45:In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) 
S60:This material and its container must be disposed of as hazardous waste. 
S61:Avoid release to the environment. Refer to special instructions / safety data sheets.
RIDADR 2810
HazardClass 6.1(b)
PackingGroup III