Ethylenediaminetetraacetic acid, or EDTA, is a white crystalline solid that's barely soluble in water on its own, which is exactly why it's almost always sold as a salt instead, disodium, tetrasodium or a metal complex like EDTA ferric sodium. What makes EDTA useful across so many industries is a single property: it's a hexadentate chelating agent, meaning one EDTA molecule can wrap around a metal ion and bind it at six points at once. That grip is tight enough to pull a metal ion out of solution chemistry entirely, locking it into a stable, water soluble complex that can't catalyze the reactions it otherwise would. That's the whole reason EDTA shows up in food, cosmetics, cleaning products and lab reagents: it's not doing the main job in any of them, it's quietly keeping trace metals from interfering with it.
COMMON APPLICATIONS
Stabilizer in food and cosmetic products, preventing trace metal ions from triggering discoloration or oxidation. Chelating agent in detergents and cleaning products, where it keeps hard water minerals in solution. Titration reagent for measuring water hardness and metal ion concentration in analytical labs. Chelated micronutrient source in agriculture, with EDTA ferric sodium improving iron uptake in plants grown in alkaline soil. Blood collection tube additive in clinical settings, where EDTA's calcium binding prevents clotting so samples stay suitable for analysis. And, under medical supervision with pharmaceutical grade material, a chelation therapy agent for treating certain heavy metal exposures.
GRADES EXPLAINED
Reagent Grade covers the premixed molar solutions, made for titrations and specific analytical procedures with no dilution required. Lab Grade is solid everyday purity for general reagent and industrial use. ACS/FCC Grade meets both American Chemical Society and Food Chemicals Codex standards, which is why it's the grade carrying Kosher and Halal certification here, suitable for food and cosmetic formulation. Ultrapure Grade pushes purity further still, for applications where trace impurities genuinely matter.
TYPES & GRADES AT A GLANCE
WHY BUY FROM LAB ALLEY
256,000+ customers already order their chemicals and reagents from Lab Alley. 99.5% of orders ship within 1 to 2 business days, and 98.9% inventory accuracy means the grade you see in stock is the grade that ships. SDS and COA are available online for every EDTA product, and our ACS/FCC Grade disodium salt and our Ultrapure Grade tetrasodium salt both carry Kosher and Halal certification; check each product page for which applies.
Related: See our Citric Acid collection, or browse all Acids.