... ,4,5 -Trihydroxy Benzoic Acid,CHEMICAL phosphoric acid Chemical Name: 3,4,5 -Trihydroxy Benzoic AcidPhysical Properties: White or grayish white crystal powder ... , solved in 85 shares of water, 6 ... well as in the analysis of rare metals.GALLIC ACID,3,4,5 -Trihydroxy Benzoic Acid,CHEMICAL phosphoric ...