EDTA-2Na: Disodium ethylenediaminetetraacetic acid, also called EDTA-2Na, is a good compounding agent in chemistry. The chemical formula is C₁₀H₁₄N₂Na₂O₈ and the molecular weight is 336.206.

EDTA-4Na: The chemical formula of tetrasodium ethylenediaminetetraacetic acid is C₁₀H₁₂N₂Na₄O₈, white crystalline powder. It is soluble in water and acid, but insoluble in alcohol, benzene and chloroform.

MGDA-3Na: Trisodium methylglycine diacetate, also known as trisodium dicarboxymethylalanine, is a small molecule chelating agent, MGDA-Na3 is a new type of green degradable chelating agent, to replace the traditional Phosphonates

Dissolvine GL is the tetrasodium salt of glutamic acid oxalate (GLDA-NA4), which can bind the nitrogen atom in the center of the molecular structure with the second and third order metal ions through strong multiple bonds.