{"product_id":"hydrochloric-acid-31-acs-grade","title":"Hydrochloric Acid 31% ACS Grade","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eAlliance Chemical supplies Hydrochloric Acid 31% ACS Grade, an aqueous solution of hydrogen chloride (HCl, CAS 7647-01-0) prepared by dilution of ACS Reagent Grade hydrochloric acid with deionized water. It is a clear, colorless to slightly yellow liquid with a pungent, irritating odor, supplied at a nominal 31% w\/w concentration so that operations receive a ready-to-use strength without diluting concentrated acid on site.\u003c\/p\u003e\u003cp\u003eBecause the solution is made from ACS Reagent Grade feedstock and deionized water, it carries the low trace-impurity profile of the ACS article rather than the wider tolerances of a technical grade — the practical difference between the two grades is impurity content, not strength.\u003c\/p\u003e\u003ch3\u003eWhy This Grade\u003c\/h3\u003e\u003cp\u003eThe ACS \u003cem\u003eReagent Chemicals\u003c\/em\u003e monograph for hydrochloric acid specifies an assay of 36.5–38.0% together with the trace-impurity ceilings below. That assay band describes the concentrated article; this product is the diluted 31% strength prepared from it, so the impurity limits apply proportionally while the assay is the nominal 31%. Where a procedure calls for the undiluted ACS article, order \u003ca href=\"\/products\/hydrochloric-acid-37-acs-reagent-grade\"\u003eHydrochloric Acid 37% ACS Reagent Grade\u003c\/a\u003e.\u003c\/p\u003e\u003cdiv class=\"chemical-profile\"\u003e\n\u003cdl\u003e\n\u003cdt\u003eColor (APHA)\u003c\/dt\u003e\n\u003cdd\u003e10\u003c\/dd\u003e\n\u003cdt\u003eResidue after ignition\u003c\/dt\u003e\n\u003cdd\u003e5 ppm\u003c\/dd\u003e\n\u003cdt\u003eFree chlorine (Cl)\u003c\/dt\u003e\n\u003cdd\u003e1 ppm\u003c\/dd\u003e\n\u003cdt\u003eSulfate (SO₄)\u003c\/dt\u003e\n\u003cdd\u003e1 ppm\u003c\/dd\u003e\n\u003cdt\u003eSulfite (SO₃)\u003c\/dt\u003e\n\u003cdd\u003e1 ppm\u003c\/dd\u003e\n\u003cdt\u003eAmmonium (NH₄)\u003c\/dt\u003e\n\u003cdd\u003e3 ppm\u003c\/dd\u003e\n\u003cdt\u003eArsenic (As)\u003c\/dt\u003e\n\u003cdd\u003e0.01 ppm\u003c\/dd\u003e\n\u003cdt\u003eHeavy metals (as Pb)\u003c\/dt\u003e\n\u003cdd\u003e1 ppm\u003c\/dd\u003e\n\u003cdt\u003eIron (Fe)\u003c\/dt\u003e\n\u003cdd\u003e0.2 ppm\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003cp class=\"chemical-profile__note\"\u003eACS \u003cem\u003eReagent Chemicals\u003c\/em\u003e limits for the concentrated article, shown as the basis for this dilution.\u003c\/p\u003e\n\u003c\/div\u003e\u003ch3\u003eChemical Profile\u003c\/h3\u003e\u003cdiv class=\"chemical-profile\"\u003e\u003cdl\u003e\n\u003cdt\u003eCAS Number\u003c\/dt\u003e\n\u003cdd\u003e7647-01-0\u003c\/dd\u003e\n\u003cdt\u003eChemical Formula\u003c\/dt\u003e\n\u003cdd\u003eHCl\u003c\/dd\u003e\n\u003cdt\u003eMolecular Weight\u003c\/dt\u003e\n\u003cdd\u003e36.46 g\/mol\u003c\/dd\u003e\n\u003cdt\u003eConcentration\u003c\/dt\u003e\n\u003cdd\u003e31% w\/w\u003c\/dd\u003e\n\u003cdt\u003eGrade\u003c\/dt\u003e\n\u003cdd\u003eACS Reagent Grade\u003c\/dd\u003e\n\u003cdt\u003eAppearance\u003c\/dt\u003e\n\u003cdd\u003eClear, colorless to slightly yellow liquid\u003c\/dd\u003e\n\u003cdt\u003eOdor\u003c\/dt\u003e\n\u003cdd\u003ePungent, irritating\u003c\/dd\u003e\n\u003cdt\u003epH\u003c\/dt\u003e\n\u003cdd\u003e\u0026lt;1\u003c\/dd\u003e\n\u003cdt\u003eSpecific Gravity (20 °C)\u003c\/dt\u003e\n\u003cdd\u003e1.155\u003c\/dd\u003e\n\u003cdt\u003eBoiling Point\u003c\/dt\u003e\n\u003cdd\u003e~85-90 °C (fumes)\u003c\/dd\u003e\n\u003cdt\u003eMelting Point\u003c\/dt\u003e\n\u003cdd\u003e\u0026lt; -40 °C\u003c\/dd\u003e\n\u003cdt\u003eFlash Point\u003c\/dt\u003e\n\u003cdd\u003eNot flammable\u003c\/dd\u003e\n\u003cdt\u003eSolubility in Water\u003c\/dt\u003e\n\u003cdd\u003eMiscible\u003c\/dd\u003e\n\u003c\/dl\u003e\u003c\/div\u003e\u003ch3\u003eIndustrial Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMetal pickling and descaling\u003c\/li\u003e\n\u003cli\u003eChemical synthesis and pH control\u003c\/li\u003e\n\u003cli\u003eOil- and gas-well acidizing\u003c\/li\u003e\n\u003cli\u003eIon-exchange resin regeneration\u003c\/li\u003e\n\u003cli\u003eIndustrial-strength cleaning and surface preparation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eHazmat \u0026amp; Shipping\u003c\/h3\u003e\u003cp\u003eShipped as \u003cstrong\u003eUN1789, Hydrochloric acid, Class 8, PG II\u003c\/strong\u003e. GHS signal word \u003cstrong\u003eDanger\u003c\/strong\u003e: May be corrosive to metals; Causes severe skin burns and eye damage; May cause respiratory irritation. All packaging is UN-rated for the assigned packing group, and every shipment shows the required Class 8 corrosive labeling and markings. Drums, totes and pallet quantities move by LTL freight; smaller packages ship ground.\u003c\/p\u003e\u003ch3\u003eHandling \u0026amp; Storage\u003c\/h3\u003e\u003cp\u003eStore in the original closed container in a cool, dry, well-ventilated area away from metals, alkalis, oxidizers and cyanides. Use corrosion-resistant containment — HDPE, PVC, PTFE, PVDF, borosilicate glass or FRP; do not use ordinary carbon steel, aluminum or copper alloys. Wear chemical splash goggles, a face shield, acid-resistant gloves and protective clothing, and work with adequate ventilation. Always add acid to water, never water to acid.\u003c\/p\u003e\u003ch3\u003eOrder \u0026amp; Documentation\u003c\/h3\u003e\u003cp\u003eEvery order ships with a Safety Data Sheet and a Certificate of Analysis. The current SDS (English, French, Spanish and Japanese), Technical Data Sheet and a sample certificate are published at \u003ca href=\"https:\/\/docs.alliancechemical.com\/sds\/hydrochloric-acid-31-acs-grade\"\u003edocs.alliancechemical.com\u003c\/a\u003e. Lot-specific certificates are available on request.\u003c\/p\u003e\u003ch3\u003eWhy Buy from Alliance Chemical\u003c\/h3\u003e\u003cp\u003eAlliance Chemical blends, packages and ships hydrochloric acid solutions from our facility in Taylor, Texas. Packaging runs from 1 quart to 330-gallon IBC totes, so the same material and the same documentation follow you from bench testing to full production. For volume pricing or a freight quote, contact our sales team.\u003c\/p\u003e\u003cp\u003e\u003ca class=\"cta-button\" href=\"\/collections\/acids\"\u003eBrowse all industrial acids\u003c\/a\u003e\u003c\/p\u003e","brand":"Alliance Chemical","offers":[{"title":"1 Quart \/ 1 Quart","offer_id":44417773797418,"sku":"5C8-GWK-5T1","price":18.0,"currency_code":"USD","in_stock":true},{"title":"1 Quart \/ 2 Quarts","offer_id":44417773830186,"sku":"5KM-DJU-QVB","price":23.5,"currency_code":"USD","in_stock":true},{"title":"1 Quart \/ 4 Quarts","offer_id":44417773862954,"sku":"HC6-S7V-R55","price":31.5,"currency_code":"USD","in_stock":true},{"title":"1 Quart \/ 8 Quarts","offer_id":44417773895722,"sku":"LRE-TLS-ER2","price":57.0,"currency_code":"USD","in_stock":true},{"title":"1 Gallon \/ 1 Gallon","offer_id":44417773928490,"sku":"TC4-NXX-LFG","price":27.0,"currency_code":"USD","in_stock":true},{"title":"1 Gallon \/ 2 Gallons","offer_id":44417773961258,"sku":"Y8J-97N-UMS","price":54.0,"currency_code":"USD","in_stock":true},{"title":"1 Gallon \/ 4 Gallon Case","offer_id":44417773994026,"sku":"7T5-EAL-KCJ","price":108.0,"currency_code":"USD","in_stock":true},{"title":"1 Gallon \/ 4 Gallons x 36 Cases","offer_id":44417774026794,"sku":"FY9-PPQ-HV5","price":3590.0,"currency_code":"USD","in_stock":true},{"title":"5 Gallon \/ 5 Gallon Pail","offer_id":44417774059562,"sku":"Y6X-TT4-VCV","price":135.0,"currency_code":"USD","in_stock":true},{"title":"5 Gallon \/ 4 x 5 Gallon Pails","offer_id":44417774092330,"sku":"9N3-AR4-CKK","price":500.0,"currency_code":"USD","in_stock":true},{"title":"5 Gallon \/ 36 x 5 Gallons (Pallet)","offer_id":44417774125098,"sku":"EUU-AG2-XH0","price":4490.0,"currency_code":"USD","in_stock":true},{"title":"15 Gallon \/ 15 Gallon Drum","offer_id":44417774157866,"sku":"6PS-GZZ-VUY","price":375.0,"currency_code":"USD","in_stock":true},{"title":"55 Gallon \/ 55 Gallon Drum","offer_id":44417774190634,"sku":"JYS-XZU-QYP","price":1370.0,"currency_code":"USD","in_stock":true},{"title":"55 Gallon \/ 4 x 55 Gallon Drums","offer_id":44417774223402,"sku":"P93-FSF-GLV","price":5480.0,"currency_code":"USD","in_stock":true},{"title":"275 Gallon \/ 275 Gallon IBC Tote","offer_id":44417774256170,"sku":"B6S-R78-9XF","price":6850.0,"currency_code":"USD","in_stock":true},{"title":"330 Gallon \/ 330 Gallon IBC Tote","offer_id":44417774288938,"sku":"EUU-9CP-VXL","price":8220.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0588\/2734\/1866\/files\/5C8-GWK-5T1--organic-8db72853.png?v=1787254523","url":"https:\/\/alliancechemical.com\/products\/hydrochloric-acid-31-acs-grade","provider":"Alliance Chemical","version":"1.0","type":"link"}