AVA Chemicals [P] Ltd. Manufactures a range of Micronutrient which includes Liquid Manganese Diethylene Triamine Penta Acetic Acid. AVA Chemicals [P] Ltd. Is an ISO 9001:2000 certified company. Liquid Manganese Diethylene Triamine Penta Acetic Acid is also known as DTPA Manganese chelate, Manganese DTPA, Chelated Manganese DTPA. The CAS Numbers of this chemical are 15375-84-5. Liquid Manganese Diethylene Triamine Penta Acetic Acid is dark brown colored and Ph of a 1% solution of this chemical is 6.5 to 7.5. The percent of active ingredient in this chemical is 5.5 %.