AVA Chemicals [P] Ltd. Offers Nitrilotri Acetic Acid. AVA Chemicals [P] Ltd. Is an ISO 9001:2000 certified company. Nitrilotri Acetic Acid has white crystals like appearance. The CAS Numbers of the chemical is 139-13-9. The Molecular Weight of Nitrilotri Acetic Acid is 191. It contains 99 % [±1] of the active content. The pH of the saturated solution of Nitrilotri Acetic Acid ranges 2 to 3 and its chelation value is 520 mg CaCo3 / g.