3H-naphtho(2,1-b)pyran-3-one

Names

[ CAS No. ]:
4352-89-0

[ Name ]:
3H-naphtho(2,1-b)pyran-3-one

[Synonym ]:
naphthopyran-2-one
naphthopiranone
5,6-benzocoumarin

Chemical & Physical Properties

[ Density]:
1.297

[ Boiling Point ]:
402.6ºC at 760 mmHg

[ Melting Point ]:
117－119ºC

[ Molecular Formula ]:
C₁₃H₈O₂

[ Molecular Weight ]:
196.20100

[ Flash Point ]:
169.7ºC

[ Exact Mass ]:
196.05200

[ PSA ]:
30.21000

[ LogP ]:
2.94620

[ Index of Refraction ]:
1.687

Safety Information

[ HS Code ]:
2914399090

Synthetic Route

Click to get detail synthetic route

Customs

[ HS Code ]: 2914399090

[ Summary ]:
2914399090. other aromatic ketones without other oxygen function. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:5.5%. General tariff:30.0%