Identification
Name		Gallic acid
Synonyms		3,4,5-Trihydroxybenzoic acid  Pyrogallol-5-carboxylic acid
Molecular Structure
Molecular Formula		C7H6O5
Molecular Weight		170.12
CAS Registry Number		149-91-7
EINECS		205-749-9
Properties
Density		1.694
Melting point		251 ºC
Boiling point		259.73°C
Water solubility		12 g/L cold water
refractive index		1.5690
pka		4.41
Safety Data
Hazard Symbols		Xi
Risk Codes		R36/37/38
Safety Description		S24/25

Gallic acid uses:

1、Gallic acid A cyclooxygease inhibitor substance found in plants.

2、Gallic acid is a potential bleaching agent and anti-oxidant, it is also astringent and potentially anti-microbial and anti-fungal. Scientists are finding that gallic acid may serve as a skin-lightening agent by inhibiting the action of the tyrosinase and peroxidase enzymes. Some studies indicate that it is more effective than hydroquinone when combined with the proper ingredients. It is also incorporated into anti-aging formulations for its ability to prevent mucopolysaccaride deterioration. It is a constituent of witch hazel and oak bark, among many other plants; however, it is generally obtained from nutgalls for commercial purposes.