{"product_id":"phosphoric-acid-85-acs-grade","title":"Phosphoric Acid 85% ACS Grade","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003eAlliance Chemical provides \u003ca href=\"\/products\/phosphoric-acid-85-acs-grade\"\u003ePhosphoric Acid 85% ACS Grade\u003c\/a\u003e as a high-purity mineral acid designed for demanding industrial, analytical, and manufacturing processes. Formulated to meet the precise standards set by the American Chemical Society, this solution is a clear, colorless, and odorless liquid that exhibits a high density of 1.892 at 77 °F. It serves as a vital component in chemical synthesis, metal surface treatment, and catalyst preparation where impurities must be kept to a minimum to avoid interfering with sensitive reactions. This premium quality formulation is ideal for laboratories and high-specification manufacturing facilities requiring absolute consistency. You can explore our complete catalog of high-purity \u003ca href=\"\/collections\/acids\"\u003eacids\u003c\/a\u003e to find additional reagent-grade solutions.\u003c\/p\u003e\u003cp\u003eAs a premier Texas chemical distributor, we ensure this acid maintains its exact chemical properties under strict quality control. Phosphoric acid (CAS 7664-38-2) is highly miscible in water and is classified as a strong inorganic acid with a pH of 1.5 in a 0.1 N aqueous solution. It serves critical functions in modern industry, functioning as a reactant, pH adjuster, and surface preparation agent. We supply this material in multiple sizes, from single quarts to multi-gallon cases, to meet diverse commercial requirements. Our packaging processes adhere to stringent containment protocols to preserve the purity of the ACS Grade specification from our facility to yours.\u003c\/p\u003e\u003ch3\u003eWhy This Grade\u003c\/h3\u003e\u003cp\u003eSelecting the correct concentration and grade is critical when working with phosphoric acid. Phosphoric Acid 85% ACS Grade offers a highly concentrated formulation with minimal trace impurities, which is vital for applications requiring high reproducibility. In \u003ca href=\"\/pages\/industries\/metal-finishing\"\u003emetal surface finishing\u003c\/a\u003e or chemical polishing, utilizing a lower-grade alternative can introduce unwanted transition metals or chlorides. These impurities can compromise the integrity of the surface finish, leading to pitting, discoloration, or poor adhesion. For operations requiring highly sensitive analytical methods or precise synthesis, ACS Grade represents the standard of reliability.\u003c\/p\u003e\u003cp\u003eUsing an incorrect concentration or lower grade also introduces specific failure modes in catalyst preparation and industrial manufacturing. If a technical or commercial grade is substituted, the presence of heavy metals or sulfate contaminants can poison catalysts, leading to premature deactivation and costly process downtime. Additionally, precise pH adjustment in sensitive industrial workflows requires a predictable concentration. A concentration variance or the presence of unlisted chemical buffers in lower-grade acids can skew titration curves, causing process drifts that disrupt bulk manufacturing runs.\u003c\/p\u003e\n\u003cdiv class=\"chemical-profile\" data-source=\"canonical\"\u003e\n\u003ch3\u003eChemical Profile\u003c\/h3\u003e\n\u003cdl\u003e\n\u003cdt\u003eCAS Number\u003c\/dt\u003e\n\u003cdd\u003e7664-38-2\u003c\/dd\u003e\n\u003cdt\u003eChemical Formula\u003c\/dt\u003e\n\u003cdd\u003eH3O4P\u003c\/dd\u003e\n\u003cdt\u003eMolecular Weight\u003c\/dt\u003e\n\u003cdd\u003e97.995 g\/mol\u003c\/dd\u003e\n\u003cdt\u003eBoiling Point\u003c\/dt\u003e\n\u003cdd\u003egreater than 266 °F at 760 mmHg (USCG, 1999)\u003c\/dd\u003e\n\u003cdt\u003eMelting Point\u003c\/dt\u003e\n\u003cdd\u003e108 °F (NIOSH, 2024)\u003c\/dd\u003e\n\u003cdt\u003eFlash Point\u003c\/dt\u003e\n\u003cdd\u003eNon-flammable °C\u003c\/dd\u003e\n\u003cdt\u003eSpecific Gravity\u003c\/dt\u003e\n\u003cdd\u003e1.892 at 77 °F (USCG, 1999) - Denser than water; will sink\u003c\/dd\u003e\n\u003cdt\u003eAppearance\u003c\/dt\u003e\n\u003cdd\u003ePhosphoric acid appears as a clear colorless liquid or transparent crystalline solid. The pure solid melts at 42.35 °C and has a density of 1.834 g \/ cm3. Liquid is usually an 85% aqueous solution. Shipped as both a solid and liquid. Corrosive to metals and tissue. Used in making fertilizers and detergents and in food processing.\u003c\/dd\u003e\n\u003cdt\u003eSolubility\u003c\/dt\u003e\n\u003cdd\u003eMiscible (NIOSH, 2024)\u003c\/dd\u003e\n\u003cdt\u003eUN Number\u003c\/dt\u003e\n\u003cdd\u003eUN1805\u003c\/dd\u003e\n\u003cdt\u003eHazard Class\u003c\/dt\u003e\n\u003cdd\u003eClass 8\u003c\/dd\u003e\n\u003cdt\u003ePacking Group\u003c\/dt\u003e\n\u003cdd\u003eIII\u003c\/dd\u003e\n\u003cdt\u003eProper Shipping Name\u003c\/dt\u003e\n\u003cdd\u003ePHOSPHORIC ACID SOLUTION\u003c\/dd\u003e\n\u003cdt\u003eGHS Signal Word\u003c\/dt\u003e\n\u003cdd\u003eDanger\u003c\/dd\u003e\n\u003c\/dl\u003e\n\u003cp class=\"chemical-profile__note\"\u003e\u003cem\u003eValues sourced from Alliance Chemical's canonical chemistry registry. Certificate of Analysis (COA) per lot.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3\u003eIndustrial Applications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eMetal Surface Treatment: Used in phosphatizing and rust conversion processes to create a corrosion-resistant protective coating on iron and steel surfaces.\u003c\/li\u003e\n\u003cli\u003eChemical Synthesis: Serves as a vital reagent and catalyst in the production of high-purity phosphate salts and organic chemical derivatives.\u003c\/li\u003e\n\u003cli\u003epH Adjustment: Employed in industrial water treatment and manufacturing workflows to precisely lower pH levels in highly alkaline process streams.\u003c\/li\u003e\n\u003cli\u003eAnodizing and Polishing: Acts as an active electrolyte in the chemical polishing and electro-polishing of aluminum, copper, and stainless steel alloys.\u003c\/li\u003e\n\u003cli\u003eCatalyst Manufacture: Utilized as a phosphoric acid catalyst substrate or binder in the production of petrochemical and isomerization catalysts.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eHazmat \u0026amp; Shipping\u003c\/h3\u003e\u003cp\u003ePhosphoric Acid 85% ACS Grade is a regulated hazardous material. For transportation, it is classified under the United Nations system as \u003cstrong\u003eUN1805\u003c\/strong\u003e. It belongs to \u003cstrong\u003eHazard Class 8\u003c\/strong\u003e, which covers corrosive substances, and is assigned to \u003cstrong\u003ePacking Group III\u003c\/strong\u003e. The proper shipping name is \u003cstrong\u003ePHOSPHORIC ACID SOLUTION\u003c\/strong\u003e. The canonical signal word for this product is \u003cstrong\u003eDanger\u003c\/strong\u003e. As a corrosive liquid, it is subject to strict shipping regulations to ensure safety during transit across both regional and interstate commerce.\u003c\/p\u003e\u003cp\u003eThis chemical holds the hazard classification statement H314, indicating that it causes severe skin burns and eye damage. When handling this material, personnel must wear appropriate personal protective equipment (PPE) as dictated by the precautionary statements P260 and P280. This includes chemical-resistant gloves, a protective face shield, protective clothing, and eye protection. Ensuring adequate ventilation or respiratory protection is also mandatory under conditions where mists may be generated. A Safety Data Sheet (SDS) is provided with every order to assist your safety compliance officer.\u003c\/p\u003e\u003ch3\u003eHandling \u0026amp; Storage\u003c\/h3\u003e\u003cp\u003eStore Phosphoric Acid 85% ACS Grade in a cool, dry, well-ventilated area, ideally between 60°F and 85°F to prevent freezing, as pure phosphoric acid melts at 108 °F. This corrosive acid is highly incompatible with strong bases, active metals, and strong oxidizing agents, which can react violently or release flammable hydrogen gas. Ensure storage containers are constructed of compatible materials, such as high-density polyethylene (HDPE), polypropylene, or glass. Do not store this material in carbon steel, aluminum, or unprotected metal containers that are prone to severe corrosive attack.\u003c\/p\u003e\u003ch3\u003eOrder \u0026amp; Documentation\u003c\/h3\u003e\u003cp\u003eWe are dedicated to providing clear documentation and reliable logistics for your industrial requirements. You can verify batch specifications easily as a Certificate of Analysis (COA) is available upon request for every shipment. To secure your supply or coordinate bulk transport options, please contact our team. Please \u003ca href=\"\/pages\/contact\" class=\"cta-button\"\u003eRequest a Quote\u003c\/a\u003e to receive volume-based pricing or \u003ca href=\"\/pages\/safety-data-sheets\"\u003eDownload the SDS\u003c\/a\u003e for your facility records.\u003c\/p\u003e\u003ch3\u003eWhy Buy from Alliance Chemical\u003c\/h3\u003e\u003cp\u003eSince 1997, Alliance Chemical has supplied premium industrial chemicals from Taylor, Texas under CAGE Code 1LT50, with a COA and SDS included on every order. For industrial use only.\u003c\/p\u003e\u003cdiv style=\"margin-top:18px;padding:14px 16px;background:#f7f6fc;border-left:4px solid #5f59f7;border-radius:8px;font-size:.95rem;\"\u003e\n\u003cstrong\u003e📘 Related reading:\u003c\/strong\u003e \u003ca href=\"\/blogs\/articles\/phosphoric-acid-uses-grades-rust-removal-and-lfp-batteries\"\u003ePhosphoric Acid: From Cola to EV Batteries — Uses, Grades \u0026amp; Rust Removal\u003c\/a\u003e — which grade and concentration you need, how phosphoric acid removes rust, food \u0026amp; beverage uses, and the LFP battery story.\u003c\/div\u003e","brand":"Alliance Chemical","offers":[{"title":"1 Quart \/ 1 Quart","offer_id":41292118097962,"sku":"CGS-CDL-LHN","price":28.71,"currency_code":"USD","in_stock":true},{"title":"1 Quart \/ 2 Quarts","offer_id":41292118130730,"sku":"WH-OX76-LD9C","price":52.8,"currency_code":"USD","in_stock":true},{"title":"1 Quart \/ 4 Quarts","offer_id":41292118163498,"sku":"WXY-901-NT0","price":75.94,"currency_code":"USD","in_stock":true},{"title":"1 Quart \/ 8 Quarts","offer_id":41884778561578,"sku":"ZAB-234-OU1","price":129.1,"currency_code":"USD","in_stock":true},{"title":"1 Gallon \/ 1 Gallon","offer_id":41292118229034,"sku":"WW-L490-IYO0","price":75.94,"currency_code":"USD","in_stock":true},{"title":"1 Gallon \/ 2 Gallons","offer_id":41884778594346,"sku":"CDE-567-PV2","price":129.1,"currency_code":"USD","in_stock":true},{"title":"1 Gallon \/ 4 Gallon Case","offer_id":41884778627114,"sku":"DL9-XAJ-4W6","price":215.75,"currency_code":"USD","in_stock":true},{"title":"1 Gallon \/ 4 Gallons x 36 Cases","offer_id":41891047407658,"sku":"SKE-TS4-S35","price":5987.52,"currency_code":"USD","in_stock":true},{"title":"5 Gallon \/ 5 Gallon Pail","offer_id":41884778659882,"sku":"35R-LCC-LDF","price":266.99,"currency_code":"USD","in_stock":true},{"title":"5 Gallon \/ 4 x 5 Gallon Pails","offer_id":41884778692650,"sku":"FGH-890-QW3","price":982.53,"currency_code":"USD","in_stock":true},{"title":"5 Gallon \/ 36 x 5 Gallons (Pallet)","offer_id":41884778725418,"sku":"XBC-112-AZ4","price":7394.87,"currency_code":"USD","in_stock":true},{"title":"15 Gallon \/ 15 Gallon Drum","offer_id":41884778758186,"sku":"DC9-WKW-3GF","price":770.0,"currency_code":"USD","in_stock":true},{"title":"55 Gallon \/ 55 Gallon Drum","offer_id":41292118491178,"sku":"LC9-X8U-WB5","price":2310.0,"currency_code":"USD","in_stock":true},{"title":"55 Gallon \/ 4 x 55 Gallon Drums","offer_id":41884778790954,"sku":"DMK-ELJ-3S5","price":8131.2,"currency_code":"USD","in_stock":true},{"title":"275 Gallon \/ 275 Gallon IBC Tote","offer_id":41292118556714,"sku":"JO-L06L-VIHY","price":10062.36,"currency_code":"USD","in_stock":true},{"title":"330 Gallon \/ 330 Gallon IBC Tote","offer_id":43829838643242,"sku":"GQF-SL3-B5G","price":11676.9,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0588\/2734\/1866\/files\/Phoshoric-Acid-85-ACS-Grade-1-Quart.jpg?v=1748983698","url":"https:\/\/alliance-chemical-store.myshopify.com\/products\/phosphoric-acid-85-acs-grade","provider":"Alliance Chemical","version":"1.0","type":"link"}