EDTA, free acid A metal chelating agent commonly used in tissue culture media and biological buffers. Specifications:Also known as Ethylenediaminetetraacetic acidUltra Pure GradeHeavy metals (as Pb): <0.001%Iron: <0.005%Nitrilotriacetic acid: <0.1%Magnesium: <0.0005%Appearance: White crystals or powderBoiling Point : 614.2 °CDensity : 0.86 g/cm3IUPAC_Name: 2,2',2'',2'''-(Ethane-1,2-diyldinitrilo)Tetraacetic AcidMelting Point: 250°CPH Value: pH (5%, water, 250ºC): 2.5-3.5RTECS Number: AH4025000