... .0% 2,Purity:99.0% 3,Water insoluble:0.1% 4,Appearance:yellow crystalline powder EDTA acid1, Chemical name: Ethylenediaminetetraacetic acid ... 2, HS Code:29212190 3, CAS-No: 15708-41-5 4, Formula: EDTA-FeNa. 3H2O (C10H12FeN2NaO8) 5, Molecular weight: 421.1 ... : 0.1%max. 4, PH value (1% of the solution) 4-6.5 5, Heavy metals(as per Pb): 4.0ppm max. 6, Appearance ...