5,6,7,8-Tetrahydro-1H-2-benzopyran-1,3(4H)-dione

Names

[ CAS No. ]:
3711-74-8

[ Name ]:
5,6,7,8-Tetrahydro-1H-2-benzopyran-1,3(4H)-dione

[Synonym ]:
5,6,7,8-tetrahydro-4H-isochromene-1,3-dione
5,6,7,8-Tetrahydro-homophthalsaeureanhydrid

Chemical & Physical Properties

[ Density]:
1.24 g/cm3

[ Boiling Point ]:
334℃

[ Melting Point ]:
46℃

[ Molecular Formula ]:
C₉H₁₀O₃

[ Molecular Weight ]:
166.17400

[ Flash Point ]:
163℃

[ Exact Mass ]:
166.06300

[ PSA ]:
43.37000

[ LogP ]:
1.33050

[ Storage condition ]:
2-8℃

Safety Information

[ HS Code ]:
2918990090

Synthetic Route

Click to get detail synthetic route

Customs

[ HS Code ]: 2918990090

[ Summary ]:
2918990090. other carboxylic acids with additional oxygen function and their anhydrides, halides, peroxides and peroxyacids; their halogenated, sulphonated, nitrated or nitrosated derivatives. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:30.0%