{"product_id":"ammonium-chloride-acs-500gm-za1270-450","title":"Ammonium Chloride, ACS Grade, 500 g","description":"\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhat it is.\u003c\/strong\u003e Ammonium chloride (NH4Cl), also known as sal ammoniac, is a white, free-flowing crystalline salt supplied in a 500 g size. This ACS reagent-grade material meets American Chemical Society specifications, with a minimum assay of 99.5% and defined limits for calcium, iron, heavy metals, sulfate, phosphate, insoluble matter, and residue after ignition.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWhy ACS grade matters.\u003c\/strong\u003e Ammonium chloride is a building block for analytical buffers, and trace calcium, magnesium, iron, or heavy metals carried in by the salt shift titration endpoints and raise blanks. ACS limits keep those impurities low and consistent from lot to lot, which supports reproducible complexometric, gravimetric, and qualitative results.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSolubility and dissolving behavior.\u003c\/strong\u003e Ammonium chloride is highly soluble, about 372 g per liter of water at 20 °C, and dissolves with a noticeable temperature drop because the process absorbs heat. In temperature-sensitive procedures, return concentrated solutions to room temperature before pH adjustment or final dilution.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAcidity in solution.\u003c\/strong\u003e The ammonium ion is a weak acid, so ammonium chloride solutions are mildly acidic: a 5% solution measures pH 4.5 to 5.5. Paired with ammonia, the ammonium\/ammonia system has a pKa near 9.25, so mixtures of ammonium chloride and ammonium hydroxide make dependable alkaline buffers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe pH 10 ammonia buffer for hardness testing.\u003c\/strong\u003e Its best-known lab role is the ammonia-ammonium chloride buffer used in EDTA titrations of calcium and magnesium for total water hardness. Combined with Lab Pro's \u003ca href=\"https:\/\/labproinc.com\/products\/ammonium-hydroxide-28-30-solution-acs-grade-1-pint-1-gallon\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eAmmonium Hydroxide 28 to 30% Solution, ACS Grade\u003c\/a\u003e, it maintains a pH near 10, where \u003ca href=\"https:\/\/labproinc.com\/products\/eriochrome-black-t-indicator-25-grams-eb0000-25\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eEriochrome Black T Indicator\u003c\/a\u003e gives a sharp wine-red-to-blue endpoint with EDTA Titrant 0.1 N \/ 0.05 M.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBehavior on heating.\u003c\/strong\u003e Ammonium chloride does not melt. Near 338 °C it sublimes, dissociating into ammonia and hydrogen chloride gases that recombine as white fumes on cooler surfaces. That behavior underlies its use in fluxes, where hot vapors help strip oxide films from metal, and it also explains why the salt should be heated only under ventilation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUses in biology and microbiology.\u003c\/strong\u003e Ammonium chloride supplies nitrogen in defined microbial culture media and is the active component of ammonium chloride lysis buffers that selectively lyse red blood cells while leaving white blood cells intact for flow cytometry and cell isolation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIndustrial and electrochemical uses.\u003c\/strong\u003e Beyond the lab, ammonium chloride is used in soldering, tinning, and galvanizing fluxes, as an electrolyte in zinc-carbon dry cells, and as a supporting electrolyte in electrochemistry. In qualitative analysis schemes, it controls pH and supplies common ions for selective precipitation.\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\u003eAmmonium chloride\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 Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left;\"\u003e\u003cstrong\u003e12125-02-9\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\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left;\"\u003e\u003cstrong\u003e235-186-4\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\u003ePubChem CID\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left;\"\u003e\u003cstrong\u003e25517\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\u003eSal ammoniac, salmiac, ammonium muriate\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\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left;\"\u003e\u003cstrong\u003eNH4Cl\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\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left;\"\u003e\u003cstrong\u003e53.49 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\u003eGrade\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left;\"\u003e\u003cstrong\u003eACS reagent\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\u003eAssay\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left;\"\u003e\u003cstrong\u003e99.5% min\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\u003epH (5% solution, 25 °C)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left;\"\u003e\u003cstrong\u003e4.5 to 5.5\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\u003eInsoluble Matter\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left;\"\u003e\u003cstrong\u003e0.005% max\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\u003eResidue after Ignition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left;\"\u003e\u003cstrong\u003e0.01% max\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\u003eHeavy Metals (as Pb)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left;\"\u003e\u003cstrong\u003e0.0005% max\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\u003eIron (Fe)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left;\"\u003e\u003cstrong\u003e0.0002% max\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\u003eSulfate (SO4)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left;\"\u003e\u003cstrong\u003e0.002% max\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\u003ePhosphate (PO4)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left;\"\u003e\u003cstrong\u003e0.0002% max\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\u003eWhite crystalline solid\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\u003eWater Solubility\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 g\/L at 20 °C\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\u003eSublimation Point\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left;\"\u003e\u003cstrong\u003e338 °C (decomposes)\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\u003eCalcium (Ca)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left;\"\u003e\u003cstrong\u003e0.001% max\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\u003eDensity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left;\"\u003e\u003cstrong\u003e1.53 g\/cm3\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\u003eOral LD50 (rat)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"border:1px solid #cfcfcf; padding:8px 12px; vertical-align:top; text-align:left;\"\u003e\u003cstrong\u003e1,410 mg\/kg\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\u003e500 g\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\u003eEDTA titration buffer:\u003c\/strong\u003e Forms the pH 10 ammonia buffer used in water hardness testing with Eriochrome Black T.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrolyte preparation:\u003c\/strong\u003e Supplies a conductive, non-interfering salt for electrochemistry and battery research.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMicrobiology and cell work:\u003c\/strong\u003e Serves as a nitrogen source in media and as the active agent in red blood cell lysis buffers.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMetal finishing:\u003c\/strong\u003e Used in soldering, tinning, and galvanizing fluxes to clean oxide films from metal surfaces.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eQualitative and gravimetric analysis:\u003c\/strong\u003e Controls pH and supplies common ions in classic precipitation and separation schemes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch4\u003eStorage, Handling \u0026amp; Shipping\u003c\/h4\u003e\n\u003cp\u003eStore ammonium chloride in a tightly closed container in a cool, dry, ventilated area. The crystals can absorb moisture and cake, so close it promptly after weighing. Keep it away from strong bases (which release ammonia gas) and from strong oxidizers and nitrates. Avoid creating dust when weighing, and never heat the solid in a closed space, since it releases ammonia and hydrogen chloride fumes.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eIncompatible materials:\u003c\/strong\u003e Strong bases, strong oxidizers, nitrates, and potassium chlorate.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePersonal protection:\u003c\/strong\u003e Safety glasses, nitrile gloves, and dust control when weighing large amounts.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSpill response:\u003c\/strong\u003e Sweep up without raising dust and place in a closed container; rinse residue 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\u003cli\u003e\n\u003cstrong\u003eGHS signal word:\u003c\/strong\u003e Warning. Harmful if swallowed; causes serious eye irritation.\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\/collections\/acs-grade-laboratory-chemicals\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eACS Grade Laboratory Chemicals\u003c\/a\u003e for related products in this category.\u003c\/li\u003e\n\u003cli\u003eExplore \u003ca href=\"https:\/\/labproinc.com\/collections\/inorganic-chemicals\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eInorganic Chemicals\u003c\/a\u003e and \u003ca href=\"https:\/\/labproinc.com\/collections\/high-purity-inorganics\" target=\"_blank\" rel=\"noopener noreferrer\"\u003eHigh Purity Inorganics\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\/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\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\u003c\/ul\u003e","brand":"Lab Pro Inc","offers":[{"title":"Default Title","offer_id":47266342862997,"sku":"ZA1270-450","price":56.3,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0757\/2327\/6437\/files\/MainImage_49212fe5-4557-4d54-a5bf-4fc7e0340427.png?v=1791837990","url":"https:\/\/checkout.labproinc.com\/products\/ammonium-chloride-acs-500gm-za1270-450","provider":"Lab Pro Inc Plus","version":"1.0","type":"link"}