Phosphoric Acid 75% USP Food Grade for Printing

In offset lithography, the chemistry of the dampening system determines print quality. Phosphoric acid serves as the backbone of that chemistry. At 75% concentration, it offers a high-strength starting point that allows press operators to dilute and blend to their exact specifications — reducing waste and giving tighter control over pH targets in fountain solutions.

Unlike weaker concentrations that require higher volumes and more frequent replenishment, 75% phosphoric acid delivers more active chemistry per gallon. For busy print facilities running multiple presses, that efficiency matters.

This SKU ships as four 55-gallon drums — 220 gallons total. For printing facilities that consume phosphoric acid regularly in fountain solution mixing or plate processing lines, the 4-drum configuration reduces per-gallon cost and cuts down on reorder frequency. It also means fewer deliveries to coordinate, which simplifies receiving and inventory management.

Need a different quantity? Alliance Chemical also offers Phosphoric Acid 75% in quart, gallon, 5-gallon pail, individual 55-gallon drum, and 275-gallon tote configurations.

Exact lot specifications — including assay, trace metals, and clarity — are detailed on the Certificate of Analysis provided with each shipment.

Phosphoric acid at 75% concentration is a strong acid that requires proper handling protocols. In a printing facility, where it's often transferred to mixing tanks or dispensed into smaller containers, these precautions are especially important:

• Review the SDS before first use and keep copies accessible at every point of handling
• Wear appropriate PPE — chemical-resistant gloves (nitrile or neoprene), splash goggles, and a face shield during transfer operations. A chemical-resistant apron is recommended when handling drums
• Use compatible materials — Store and transfer using HDPE, polypropylene, or PTFE-lined equipment. Phosphoric acid will corrode mild steel, cast iron, and most common metals over time
• Store drums upright in a cool, dry, well-ventilated area away from bases, oxidizers, and metals. Keep containers sealed when not in use to prevent moisture absorption and concentration changes
• Contain spills immediately — Maintain spill kits with appropriate neutralizing agents (sodium bicarbonate) near storage and dispensing areas
• Follow OSHA, EPA, and DOT regulations for storage quantities, secondary containment, and transportation of corrosive materials

Alliance Chemical serves printing operations of all sizes — from single-press shops to multi-facility commercial print groups. When you order:

• COA and SDS ship with every order — no need to request separately
• Bulk pricing is available for recurring orders or quantities beyond the 4-drum pack
• Shipments leave from multiple U.S. distribution points for faster transit times
• Technical support is available if you need help selecting the right concentration or package size for your application

Every shipment of Phosphoric Acid 75% from Alliance Chemical includes:

• Certificate of Analysis (COA) — Lot-specific analytical data confirming concentration, purity, and trace element levels
• Safety Data Sheet (SDS) — Complete hazard, handling, storage, and emergency response information per GHS standards

Need Phosphoric Acid 75% for your printing operation? Contact Alliance Chemical for pricing on the 4-drum pack, individual drums, or tote quantities. We're available to answer technical questions about concentration selection, compatibility with your existing fountain solution chemistry, or storage requirements for your facility.