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

Modify Date: 2025-08-25 09:15:21

4-Oxo-4H-pyran-2-carboxylic acid Structure
4-Oxo-4H-pyran-2-carboxylic acid structure
Common Name 4-Oxo-4H-pyran-2-carboxylic acid
CAS Number 499-05-8 Molecular Weight 140.094
Density 1.5±0.1 g/cm3 Boiling Point 354.5±37.0 °C at 760 mmHg
Molecular Formula C6H4O4 Melting Point N/A
MSDS N/A Flash Point 160.0±20.0 °C

 Names

Name 4-oxopyran-2-carboxylic acid
Synonym More Synonyms

 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

 Safety Information

Risk Phrases 36/37/38
Safety Phrases 26-36/37/39
HS Code 2932999099

 Synthetic Route

 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%

 Synonyms

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
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