4-Hydroxybut-2-ynoic acid

Names

[ Name ]:
4-Hydroxybut-2-ynoic acid

[Synonym ]:
4-hydroxy-2-butynoic acid
Hydroxy-but-2-insaeure
4-oxidanylbut-2-ynoic acid
hydroxy-but-2-ynoic acid
4-hydroxy-but-2-ynoic acid
Hydroxymethyl-propiolsaeure
Hydroxytetrolic acid

Chemical & Physical Properties

[ Density]:
1.429 g/cm3

[ Boiling Point ]:
319.2ºC at 760 mmHg

[ Melting Point ]:
115-116 °C

[ Molecular Formula ]:
C₄H₄O₃

[ Molecular Weight ]:
100.07300

[ Flash Point ]:
161ºC

[ Exact Mass ]:
100.01600

[ PSA ]:
57.53000

[ Storage condition ]:
2-8°C

Safety Information

[ Hazard Codes ]:
Xi

[ Risk Phrases ]:
R36/37/38

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

[ HS Code ]:
2918199090

Synthetic Route

Click to get detail synthetic route

Precursor & DownStream

Precursor

DownStream

Customs

[ HS Code ]: 2918199090

[ Summary ]:
2918199090 other carboxylic acids with alcohol function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:6.5%。General tariff:30.0%