PRODUCT NAME: EDTA-2Na ;Edetic acid disodium salt; EDTA disodium salt; (Ethylenedinitrilo)tetraacetic acid disodium salt CAS NO. : [139-33-3] EMPIRICAL FORMULA : C 10 H 14 N 2 Na 2 O 8 MOL. WT.: 336.21 STRUCTURAL FORMULA: DESCRIPTION APPEARANCE: Pure white crystalline powder.Free Flowing. WATER-INSOLUBLE: ≤0.1% CHLORIDES (Cl): Not more than 0.005% (50 ppm). SUlPHATE ( SO 4 )%: Not more than0.1% IRON % (Fe) : Not more than 0.001% (10ppm) HEAVY METAL(LEAD): Not more than 0.001% (10 ppm) Torrefaction weightlessness: Not more than0.01% PH (1% w/v Solution): 4to 5 PURITY (ASSAY): Minimum 99.0% PACKING : Packed in complex bag with plastic nner,25KG net per bag .stored in cool and warehouse , away from acids oxides, light heater .sealed after use.