CAS: 7664-38-2 Molecular Formula: H3 O4 P Molecular Weight (g/mol): 98 Synonym: Phosphoric acid,3M Etching Liquid,Acidum Phosphoricum,Amberphos 54,C 134,C 134 (acid),C 434,C 434 (acid),Conditioner 36,Decon 4512,E 338,EVITs,Etchalite,HQ 54,K Etchant Gel,K-etchant,Kefo,Kerr Etchant,Mikro Klene DF,NSC 80804,Orthophosphoric Acid,PC 400,Panavia Etching Agent,SPA 2,SPA 2 (catalyst),Sonac,TG 434,Total Etch,Ultra-Etch Gel,Ultradent,Ultraetch,Uni-Etch,Vococid,WC-Reiniger,Y 11A06 IUPAC Name: phosphoric acid SMILES: OP(=O)(O)O