2,2',2",2'"-(Ethane1,2-diyldinitrilo)tetraethanoic Acid, Disodium Salt Dihydrate (Disodium EDTA, Reagent, CHEM-538), 25g (Item 9605)

2,2',2",2'"-(Ethane1,2-diyldinitrilo)tetraethanoic Acid, Disodium Salt Dihydrate (Disodium EDTA, Reagent, CHEM-538), 25g (Item 9605)

Item: Disodium EDTA (2,2',2",2'"-(Ethane-1,2-diyldinitrilo)tetraethanoic Acid)
Formula: C₁₀H₁₄O₈N₂Na₂.2H₂O
Manufacturer: Rainbow House Alchemists
#CHEM-538. Size: 25g

From the Wikipedia entry:

EDTA is a widely used initialism for the chemical compound ethylenediaminetetraacetic acid (which has many other names, see Table). EDTA is a polyamino carboxylic acid with the formula [CH₂N(CH₂CO₂H)₂]₂. This colourless, water-soluble solid is widely used to dissolve scale. Its usefulness arises because of its role as a chelating agent, i.e. its ability to "sequester" metal ions such as Ca2+ and Fe3+. After being bound by EDTA, metal ions remain in solution but exhibit diminished reactivity. EDTA is produced as several salts, notably disodium EDTA and calcium disodium EDTA.