4-Oxo-4H-pyran-2-carboxylic acid

Names

[ CAS No. ]:
499-05-8

[ Name ]:
4-Oxo-4H-pyran-2-carboxylic acid

[Synonym ]:
4H-Pyran-2-carboxylic acid, 4-oxo-
4-oxo-4H-pyrane-2-carboxylic acid
COMANIC ACID
4-Oxo-4H-pyran-2-carbonsaeure
γ-Pyrone-2-carboxylic Acid
4-Oxo-4H-pyran-2-carboxylic acid

Chemical & Physical Properties

[ Density]:
1.5±0.1 g/cm3

[ Boiling Point ]:
354.5±37.0 °C at 760 mmHg

[ Molecular Formula ]:
C₆H₄O₄

[ Molecular Weight ]:
140.094

[ Flash Point ]:
160.0±20.0 °C

[ Exact Mass ]:
140.010956

[ PSA ]:
67.51000

[ LogP ]:
-0.56

[ Vapour Pressure ]:
0.0±1.7 mmHg at 25°C

[ Index of Refraction ]:
1.577

MSDS

Click to get detail MSDS

Safety Information

[ Risk Phrases ]:
36/37/38

[ Safety Phrases ]:
26-36/37/39

[ HS Code ]:
2932999099

Synthetic Route

Click to get detail synthetic route

Precursor & DownStream

Precursor

DownStream

Customs

[ HS Code ]: 2932999099

[ Summary ]:
2932999099. other heterocyclic compounds with oxygen hetero-atom(s) only. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%