{"product_id":"edta-titrant-0-1n-0-05m-1gal-ze0552-128","title":"EDTA Titrant 0.05 M (0.1 N), 1 Gallon","description":"\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat it is.\u003c\/strong\u003e This EDTA titrant contains 0.05 moles of disodium EDTA dihydrate per liter, is labeled 0.1 N, and comes in a 1-gallon size. It is a clear, colorless complexometric titrant for calcium, magnesium, and other metals in water and process samples.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhy 0.05 M is labeled 0.1 N.\u003c\/strong\u003e EDTA binds divalent metal ions such as calcium and magnesium one-to-one, and each mole corresponds to two equivalents of charge. Expressed as normality, 0.05 M EDTA is therefore 0.1 N. Molarity is the more direct basis for calculations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat each milliliter delivers.\u003c\/strong\u003e One milliliter contains 0.05 millimole of EDTA, which complexes 2.004 mg of calcium, 1.215 mg of magnesium, or the equivalent of 5.005 mg of calcium carbonate (calculated). These factors convert titration volume directly into sample concentration.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eA versatile working strength.\u003c\/strong\u003e At 0.05 M, the titrant suits moderately hard water, process water, and metal assays where 0.01 M would need large volumes and 0.1 M would give too few milliliters for good precision.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalculating hardness.\u003c\/strong\u003e Multiply the milliliters of titrant used by 5.005 to get milligrams of calcium carbonate equivalent, then divide by the sample volume in liters to report mg\/L as CaCO3 (calculated). Subtract a reagent blank first and use the standardized molarity when it differs from 0.05 M.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRunning a hardness titration.\u003c\/strong\u003e Buffer the sample near pH 10 with an ammonia buffer, add Eriochrome Black T, and titrate from wine red to clear blue. Lab Pro offers Eriochrome Black T Indicator, Ammonium Chloride, ACS Grade, and Ammonium Hydroxide 28 to 30% Solution, ACS Grade for that buffer system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHow EDTA works.\u003c\/strong\u003e EDTA is a hexadentate chelating agent that wraps around a metal ion through two nitrogen atoms and four carboxylate groups, forming a stable one-to-one complex. That predictable stoichiometry is what makes EDTA titrations accurate.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandardization and care.\u003c\/strong\u003e For critical work, standardize against calcium carbonate or zinc, keep the container tightly closed, and use deionized water and metal-free labware. The 1-gallon size provides one consistent lot for routine testing over an extended period.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRelated EDTA products.\u003c\/strong\u003e For higher metal levels, see EDTA Titrant 0.2 N \/ 0.1 M, 1 gallon or EDTA Disodium Solution, 0.1 M (0.2 N). To prepare custom strengths, use EDTA Disodium Salt Dihydrate, ACS Grade.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\n\u003ctable style=\"width:100%; border-collapse:collapse; border:1px solid #cfcfcf; margin-bottom:28px;\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left; width:32%; background:#f5f5f5;\"\u003e\u003cstrong\u003eChemical Name\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left;\"\u003e\u003cstrong\u003eEthylenediaminetetraacetic acid disodium salt dihydrate, aqueous solution\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left; width:32%; background:#f5f5f5;\"\u003e\u003cstrong\u003eSynonyms\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left;\"\u003e\u003cstrong\u003eEDTA titrant, disodium EDTA solution\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left; width:32%; background:#f5f5f5;\"\u003e\u003cstrong\u003eCAS Numbers\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left;\"\u003e\u003cstrong\u003e6381-92-6 (disodium EDTA dihydrate); 7732-18-5 (water)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left; width:32%; background:#f5f5f5;\"\u003e\u003cstrong\u003eEC Number (active)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left;\"\u003e\u003cstrong\u003e205-358-3\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left; width:32%; background:#f5f5f5;\"\u003e\u003cstrong\u003eFormula (active)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left;\"\u003e\u003cstrong\u003eC10H14N2Na2O8·2H2O\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left; width:32%; background:#f5f5f5;\"\u003e\u003cstrong\u003eMolecular Weight (active)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left;\"\u003e\u003cstrong\u003e372.24 g\/mol\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left; width:32%; background:#f5f5f5;\"\u003e\u003cstrong\u003eConcentration\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left;\"\u003e\u003cstrong\u003e0.05 M (0.1 N)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left; width:32%; background:#f5f5f5;\"\u003e\u003cstrong\u003eEDTA Content\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left;\"\u003e\u003cstrong\u003eAbout 18.6 g\/L dihydrate (calculated)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left; width:32%; background:#f5f5f5;\"\u003e\u003cstrong\u003eEDTA per mL\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left;\"\u003e\u003cstrong\u003e0.050 mmol\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left; width:32%; background:#f5f5f5;\"\u003e\u003cstrong\u003eTitration Equivalence\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left;\"\u003e\u003cstrong\u003e1.00 mL = 2.004 mg Ca, 1.215 mg Mg, or 5.005 mg CaCO3 (calculated)\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left; width:32%; background:#f5f5f5;\"\u003e\u003cstrong\u003eBinding Ratio\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left;\"\u003e\u003cstrong\u003e1:1 EDTA to metal ion\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left; width:32%; background:#f5f5f5;\"\u003e\u003cstrong\u003eAppearance\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left;\"\u003e\u003cstrong\u003eClear, colorless liquid\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left; width:32%; background:#f5f5f5;\"\u003e\u003cstrong\u003ePhysical State\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left;\"\u003e\u003cstrong\u003eLiquid, aqueous solution\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left; width:32%; background:#f5f5f5;\"\u003e\u003cstrong\u003eStorage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left;\"\u003e\u003cstrong\u003eRoom temperature, tightly closed\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left; width:32%; background:#f5f5f5;\"\u003e\u003cstrong\u003ePackage Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left;\"\u003e\u003cstrong\u003e1 gallon\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch4\u003eApplications \/ Common Uses\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWater hardness:\u003c\/strong\u003e Determines total hardness with Eriochrome Black T.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCalcium and magnesium:\u003c\/strong\u003e Titrates Ca and Mg in water and process samples.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMetal assays:\u003c\/strong\u003e Quantifies zinc, nickel, and other divalent metals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBoiler and cooling water:\u003c\/strong\u003e Monitors hardness in industrial water systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTeaching labs:\u003c\/strong\u003e Demonstrates complexometric titration.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStorage, Handling \u0026amp; Shipping\u003c\/h4\u003e\n\u003cp\u003eStore the solution tightly closed at room temperature to prevent evaporation, which would raise its concentration. Keep it away from strong oxidizers and metal-containing materials, and use clean, metal-free labware so trace metals do not consume EDTA before titration.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncompatible materials:\u003c\/strong\u003e Strong oxidizers, strong acids, and metal salts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePersonal protection:\u003c\/strong\u003e Safety glasses and nitrile gloves.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpill response:\u003c\/strong\u003e Absorb with inert material and rinse the area with water.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFirst aid:\u003c\/strong\u003e Eyes: rinse with water for several minutes. Ingestion: rinse mouth and seek medical advice.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eRelated Categories \u0026amp; Services\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003eShop \u003ca href=\"https:\/\/labproinc.com\/pages\/buffers-standards-solutions\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eBuffers, Standards \u0026amp; Solutions\u003c\/a\u003e for related products in this category.\u003c\/li\u003e\n\u003cli\u003eExplore \u003ca href=\"https:\/\/labproinc.com\/collections\/acs-grade-laboratory-chemicals\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eACS Grade Laboratory Chemicals\u003c\/a\u003e and \u003ca href=\"https:\/\/labproinc.com\/collections\/inorganic-chemicals\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eInorganic Chemicals\u003c\/a\u003e.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/labproinc.com\/pages\/be-a-lab-pro-vmi-program\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eVendor Managed Inventory (VMI) Program\u003c\/a\u003e: Lab Pro can stock, track, and replenish this item on site so it never runs out. Contact info@labproinc.com or 888-452-2776 to set up a VMI assessment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eRelated Articles\u003c\/h4\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/labproinc.com\/blogs\/news\/quantitative-analysis\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eTitration Methods for Precise Chemical Analysis in Labs\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/labproinc.com\/blogs\/news\/chemical-dilution-calculator\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eChemical Dilution Calculator: Acid \u0026amp; Solvent Guide\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/labproinc.com\/blogs\/chemicals-and-solvents\/the-importance-of-deionized-water-in-laboratory-applications\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eThe Importance of Deionized Water in Laboratory Applications\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Lab Pro Inc","offers":[{"title":"Default Title","offer_id":67674936377493,"sku":"ZE0552-128","price":79.54,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0757\/2327\/6437\/files\/MainImage_3fc44bd8-907b-4ef3-bc7f-7a32f89b0e1e.png?v=1791877486","url":"https:\/\/checkout.labproinc.com\/products\/edta-titrant-0-1n-0-05m-1gal-ze0552-128","provider":"Lab Pro Inc Plus","version":"1.0","type":"link"}