6064. Methylenedigallic Acid

Nomenclature

CAS number: 552-21-6
2,2′-Methylenebis[3,4,5-trihydroxybenzoic acid].
C15H12O10; mol wt 352.25.
C 51.15%, H 3.43%, O 45.42%.

Description and references

Made by heating a mixture of gallic acid, formaldehyde and dil HCl on the water bath.

Chemical structure

Properties

Crystals. Insol in cold, sparingly in hot water; sol in alcohol, alkalies.