... ,4,5 -Trihydroxy Benzoic Acid,CHEMICAL phosphoric acid Chemical Name: 3,4,5 -Trihydroxy Benzoic AcidPhysical Properties: White ... (Top-Class Product).Uses: Widely in such industries as pharmaceuticals, dyes, chemicals and organic synthesis, as well as in the analysis ... of rare metals.GALLIC ACID,3,4,5 -Trihydroxy Benzoic Acid,CHEMICAL phosphoric ...