4,5-dihydroxyphthalic acid

Names

[ CAS No. ]:
63958-66-7

[ Name ]:
4,5-dihydroxyphthalic acid

[Synonym ]:
1,2-Benzenedicarboxylic acid,4,5-dihydroxy
4,5-Dhpa

Chemical & Physical Properties

[ Density]:
1.779g/cm3

[ Boiling Point ]:
535.8ºC at 760mmHg

[ Molecular Formula ]:
C₈H₆O₆

[ Molecular Weight ]:
198.13000

[ Flash Point ]:
291.9ºC

[ Exact Mass ]:
198.01600

[ PSA ]:
115.06000

[ LogP ]:
0.49420

[ Index of Refraction ]:
1.717

Safety Information

[ HS Code ]:
2918290000

Synthetic Route

Click to get detail synthetic route

Customs

[ HS Code ]: 2918290000

[ Summary ]:
HS: 2918290000 other carboxylic acids with phenol function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives Tax rebate rate:9.0% Supervision conditions:AB(certificate of inspection for goods inward,certificate of inspection for goods outward) VAT:17.0% MFN tariff:6.5% General tariff:30.0%