POPCHELATE TTS is based on polyaminocarboxylic acid and EDTA (Ethylene Diamine Tetraacetic Acid). Its a chelating/seqestering agent and it chelates/complexes with various metal ions such as Ca, Mg, Fe, Al, Zn, Cu etc. It prevents staining on fabric. PROPERTIES: Appearance : White powder Solubility : Soluble in water pH of 10% soln. : 10 – 11 Active Ingredient : EDTA Tetrasodium salt Active Matter : 99 + 1% Chelation Value : 230 + 5