{"product_id":"phosphoric-acid-75-usp-food-grade","title":"Phosphoric Acid 75% USP Food Grade","description":"\u003ch2\u003eProduct Overview\u003c\/h2\u003e\u003cp\u003ePhosphoric acid 75% USP (CAS 7664-38-2) is a highly purified, concentrated aqueous solution of orthophosphoric acid, represented by the chemical formula H3O4P with a molecular weight of 97.995 g\/mol. As an essential mineral acid, this clear, odorless, and colorless liquid is widely utilized across diverse technical and industrial sectors where high-purity chemical processing is mandatory. Alliance Chemical distributes this high-specification acid to meet the stringent demands of modern manufacturing, ensuring consistent density and pH profiles across every delivered volume. Users can easily browse our extensive catalog of \u003ca href=\"\/collections\/acids\"\u003eindustrial acids\u003c\/a\u003e to find the ideal strength for their specific applications.\u003c\/p\u003e\u003cp\u003eOperating as a reliable Texas-based chemical supplier, we focus on delivering raw materials that satisfy strict purity benchmarks. This 75% concentration provides an optimal balance of active chemical strength and manageable viscosity, making it highly efficient for dilution, neutralization, and formulation tasks. Unlike weaker concentrations, the 75% variant minimizes water content, reducing freight costs and storage space requirements while maintaining a stable liquid state at standard operating temperatures. Every shipment is carefully managed to preserve chemical integrity from our facility to your receiving dock, backed by comprehensive quality control documentation.\u003c\/p\u003e\u003ch3\u003eWhy This Grade\u003c\/h3\u003e\u003cp\u003eUtilizing the USP grade of phosphoric acid ensures an exceptionally low threshold of heavy metals, arsenic, and other impurities that are commonly found in technical or agricultural grades. In high-precision manufacturing processes, even minuscule trace contaminants can catalyze unwanted side reactions, degrade sensitive process equipment, or compromise the final product's quality. This specific high-purity grade is formulated to meet the exact standards required by sensitive industrial workflows, providing peace of mind for quality assurance teams who require uncompromised chemical purity. Selecting a lesser grade can lead to costly batch failures, precipitate formation, or unexpected shifts in chemical behavior during critical production steps.\u003c\/p\u003e\u003cp\u003eChoosing a 75% concentration over other variations like 85% or 50% is critical for specific thermal and operational parameters. The 75% solution has a lower freezing point than the highly concentrated 85% version, which is prone to crystallization at cooler room temperatures—a physical transition that complicates handling and requires heated storage solutions. Conversely, using a weaker 50% solution introduces excess water into chemical formulations, which can dilute active mixtures and throw off precise stoichiometry in manufacturing. This balanced 75% formulation prevents these operational failure modes, offering reliable liquid stability and high reaction efficiency without the risk of premature crystallization or unwanted water volume.\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 preparation and rust removal — Phosphoric acid is applied to steel surfaces in \u003ca href=\"\/pages\/industries\/metal-finishing\"\u003emetal finishing\u003c\/a\u003e workflows to remove rust and form a protective iron phosphate coating that enhances corrosion resistance.\u003c\/li\u003e\n\u003cli\u003eIndustrial pH neutralization — Used extensively in wastewater neutralization and chemical processing facilities to neutralize alkaline streams and maintain precise pH levels in process water.\u003c\/li\u003e\n\u003cli\u003eChemical synthesis and catalyst agent — Acts as an essential catalyst or reagent in the production of various phosphate salts, esters, and synthetic compounds in manufacturing.\u003c\/li\u003e\n\u003cli\u003eAnodizing and metal polishing — Utilized in electrochemical polishing baths for aluminum and other metals to create smooth, reflective surfaces by selectively dissolving microscopic high points.\u003c\/li\u003e\n\u003cli\u003eDetergent and cleaning formulations — Incorporated into industrial-strength descaling agents and specialized cleaners to dissolve mineral deposits, hard water scale, and metal oxides from process piping.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eHazmat \u0026amp; Shipping\u003c\/h3\u003e\u003cp\u003ePhosphoric Acid 75% USP is a regulated hazardous material due to its corrosive properties. For transport, it is classified under DOT regulations as \u003cstrong\u003eUN1805\u003c\/strong\u003e, Hazard Class \u003cstrong\u003e8\u003c\/strong\u003e (Corrosive), Packing Group \u003cstrong\u003eIII\u003c\/strong\u003e. The proper shipping name is PHOSPHORIC ACID SOLUTION. The GHS signal word is \u003cstrong\u003eDanger\u003c\/strong\u003e, reflecting its potential to cause severe skin burns and eye damage. To ensure full compliance and safety, all shipments are handled by authorized carriers in accordance with strict DOT hazmat standards. Our robust packaging is designed to withstand the physical demands of transit, preventing leaks and exposure.\u003c\/p\u003e\u003cp\u003eWhen handling this corrosive liquid, personnel must wear appropriate personal protective equipment (PPE) to mitigate risks associated with GHS hazard statement H314. Required safety gear includes chemical-resistant gloves (such as neoprene or nitrile), protective clothing, and a full-face shield or splash goggles to protect eyes and skin from accidental contact. Work areas must be equipped with functioning eye wash stations and safety showers. To review detailed safety parameters, toxicity metrics, and emergency response procedures, please consult the product's SDS. Alliance Chemical includes an SDS with every order and maintains a library of documentation for ongoing compliance support.\u003c\/p\u003e\u003ch3\u003eHandling \u0026amp; Storage\u003c\/h3\u003e\u003cp\u003eStore phosphoric acid 75% in a cool, dry, well-ventilated area, ideally at temperatures above its crystallization point of approximately 108 °F (though the 75% solution remains liquid at much lower temperatures than the pure solid or 85% forms). Suitable container materials include high-density polyethylene (HDPE), polypropylene, or specially lined steel, as the acid is highly corrosive to metals such as mild steel, aluminum, and brass. Keep containers tightly closed when not in use and store them away from incompatible substances, including strong bases, strong oxidizing agents, and active metals. Proper secondary containment should be implemented to prevent environmental release in the event of a spill.\u003c\/p\u003e\u003ch3\u003eOrder \u0026amp; Documentation\u003c\/h3\u003e\u003cp\u003eAt Alliance Chemical, we simplify procurement by offering multiple packaging sizes to match your specific operational demands. Whether you require single quarts, multiple gallons, or bulk quantities, our team is prepared to fulfill your order with speed and precision. A Certificate of Analysis (COA) is available upon request for every batch, ensuring full traceability and quality verification. To discuss your requirements, request bulk pricing, or obtain technical documentation, please contact our support team. \u003ca href=\"\/pages\/contact\" class=\"cta-button\"\u003eRequest a Quote\u003c\/a\u003e and \u003ca href=\"\/pages\/safety-data-sheets\"\u003eDownload the SDS\u003c\/a\u003e today.\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\n\u003c!-- PDP_ARTICLE_LINKS_START --\u003e\n\u003cdiv class=\"pdp-article-links\" style=\"margin-top:2rem;padding:1.5rem;border-top:1px solid #e5e5e5;\"\u003e\n  \u003ch3 style=\"margin:0 0 1rem 0;font-size:1.25rem;\"\u003eLearn more about Phosphoric Acid 75% USP Food Grade\u003c\/h3\u003e\n  \u003cul style=\"list-style:disc;padding-left:1.5rem;margin:0;\"\u003e\n    \u003cli\u003e\u003ca href=\"\/blogs\/articles\/how-to-use-phosphoric-acid-for-rust-removal-a-complete-guide\"\u003eHow to Use Phosphoric Acid for Rust Removal: A Complete Guide\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"\/blogs\/articles\/phosphoric-acid-in-agriculture-and-cannabis-cultivation-benefits-uses-and-growth-tips\"\u003ePhosphoric Acid in Agriculture and Cannabis Cultivation: Benefits, Uses, and Growth Tips\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"\/blogs\/articles\/phosphoric-acid-the-industrial-workhorse\"\u003ePhosphoric Acid: The Industrial Workhorse\u003c\/a\u003e\u003c\/li\u003e\n    \u003cli\u003e\u003ca href=\"\/blogs\/articles\/the-power-of-phosphoric-acid-industrial-and-food-grade-applications\"\u003eThe Power of Phosphoric Acid: Industrial and Food-Grade Applications\u003c\/a\u003e\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n\u003c!-- PDP_ARTICLE_LINKS_END --\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":41292116230186,"sku":"BS1-GBU-WJ4","price":18.0,"currency_code":"USD","in_stock":true},{"title":"1 Quart \/ 2 Quarts","offer_id":41292116262954,"sku":"10V-MX6-CEH","price":26.98,"currency_code":"USD","in_stock":true},{"title":"1 Quart \/ 4 Quarts","offer_id":41292116295722,"sku":"TSW-6XJ-W7X","price":41.14,"currency_code":"USD","in_stock":true},{"title":"1 Quart \/ 8 Quarts","offer_id":41884779216938,"sku":"Y10-PMQ-U2P","price":68.74,"currency_code":"USD","in_stock":true},{"title":"1 Gallon \/ 1 Gallon","offer_id":41292116361258,"sku":"DC7-721-G12","price":41.14,"currency_code":"USD","in_stock":true},{"title":"1 Gallon \/ 2 Gallons","offer_id":41884779249706,"sku":"BCD-890-GM3","price":65.22,"currency_code":"USD","in_stock":true},{"title":"1 Gallon \/ 4 Gallon Case","offer_id":41884779282474,"sku":"PAT-3KU-Y8E","price":121.78,"currency_code":"USD","in_stock":true},{"title":"1 Gallon \/ 4 Gallons x 36 Cases","offer_id":41891047473194,"sku":"QG0-45S-L5H","price":3592.31,"currency_code":"USD","in_stock":true},{"title":"5 Gallon \/ 5 Gallon Pail","offer_id":41884779315242,"sku":"Z8A-X6P-7AH","price":150.7,"currency_code":"USD","in_stock":true},{"title":"5 Gallon \/ 4 x 5 Gallon Pails","offer_id":41884779348010,"sku":"ZNW-NM0-BVX","price":554.58,"currency_code":"USD","in_stock":true},{"title":"5 Gallon \/ 36 x 5 Gallons (Pallet)","offer_id":41884779380778,"sku":"XME-T8T-0Q5","price":4302.46,"currency_code":"USD","in_stock":true},{"title":"15 Gallon \/ 15 Gallon Drum","offer_id":41884779413546,"sku":"J4D-18K-1UL","price":425.95,"currency_code":"USD","in_stock":true},{"title":"55 Gallon \/ 55 Gallon Drum","offer_id":41292116623402,"sku":"ZYU-5RT-CZA","price":1385.92,"currency_code":"USD","in_stock":true},{"title":"55 Gallon \/ 4 x 55 Gallon Drums","offer_id":41884779446314,"sku":"CS7-BAB-R7P","price":4628.33,"currency_code":"USD","in_stock":true},{"title":"275 Gallon \/ 275 Gallon IBC Tote","offer_id":41292116688938,"sku":"RN9-JG9-DNG","price":5471.87,"currency_code":"USD","in_stock":true},{"title":"330 Gallon \/ 330 Gallon IBC Tote","offer_id":43829838544938,"sku":"22F-MBP-GK4","price":6040.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0588\/2734\/1866\/files\/phosphoric-acid-usp-75-quart.jpg?v=1748983705","url":"https:\/\/alliance-chemical-store.myshopify.com\/products\/phosphoric-acid-75-usp-food-grade","provider":"Alliance Chemical","version":"1.0","type":"link"}