Phosphoric Acid 85% ACS Grade

Product Overview

Alliance Chemical provides Phosphoric Acid 85% ACS Grade 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 acids to find additional reagent-grade solutions.

As 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.

Why This Grade

Selecting 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 metal surface finishing 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.

Using 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.

Industrial Applications

• Metal Surface Treatment: Used in phosphatizing and rust conversion processes to create a corrosion-resistant protective coating on iron and steel surfaces.
• Chemical Synthesis: Serves as a vital reagent and catalyst in the production of high-purity phosphate salts and organic chemical derivatives.
• pH Adjustment: Employed in industrial water treatment and manufacturing workflows to precisely lower pH levels in highly alkaline process streams.
• Anodizing and Polishing: Acts as an active electrolyte in the chemical polishing and electro-polishing of aluminum, copper, and stainless steel alloys.
• Catalyst Manufacture: Utilized as a phosphoric acid catalyst substrate or binder in the production of petrochemical and isomerization catalysts.

Hazmat & Shipping

Phosphoric Acid 85% ACS Grade is a regulated hazardous material. For transportation, it is classified under the United Nations system as UN1805. It belongs to Hazard Class 8, which covers corrosive substances, and is assigned to Packing Group III. The proper shipping name is PHOSPHORIC ACID SOLUTION. The canonical signal word for this product is Danger. As a corrosive liquid, it is subject to strict shipping regulations to ensure safety during transit across both regional and interstate commerce.

This 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.

Handling & Storage

Store 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.

Order & Documentation

We 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 Request a Quote to receive volume-based pricing or Download the SDS for your facility records.

Why Buy from Alliance Chemical

Since 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.