Product Overview
Sulfuric Acid 50% — Electrolyte Grade is a highly purified, mid-concentration aqueous solution designed specifically for applications requiring exact electrochemical properties. At this specific concentration, the solution provides an optimal balance of ionic conductivity and safety, minimizing the volatile reactions associated with concentrated 98% sulfuric acid. This specific grade is manufactured under stringent quality control protocols to ensure low trace metal impurities, preventing premature degradation of equipment and battery cells. As a primary mineral acid, it serves critical roles in energy storage, chemical processing, and industrial finishing.
This colorless, odorless liquid solution is highly miscible in water and exhibits high density, which requires specialized handling and dosing equipment. Alliance Chemical sources and distributes this product to meet the needs of testing laboratories, manufacturing facilities, and industrial operations across the United States. Whether utilized as an active electrolyte or a reactive chemical intermediate, our 50% sulfuric acid formulation delivers reliable performance across varied thermal ranges. We offer this material in multiple packaging configurations, from convenient individual quarts to bulk-scale industrial volumes, ensuring your operational requirements are met efficiently.
Why This Grade
Selecting Electrolyte Grade sulfuric acid at a 50% concentration is essential for maintaining strict control over electrochemical and chemical reactions. Unlike standard industrial grades, Electrolyte Grade undergoes rigorous filtration and purification processes to eliminate iron, copper, and other metallic contaminants that can compromise battery life or ruin precise chemical processes. Using an incorrect grade with higher impurity levels results in parasitic self-discharge in battery applications, reduced charge efficiency, and accelerated grid corrosion.
Furthermore, choosing a pre-diluted 50% concentration eliminates the extreme exothermic hazards associated with diluting concentrated 98% sulfuric acid on-site. The hydration reaction of concentrated sulfuric acid generates substantial heat, posing severe safety risks to operators and potential thermal stress to mixing vessels. Utilizing our pre-formulated 50% solution ensures consistency in concentration from batch to batch, protecting your systems from concentration drift and avoiding operational downtime or component failures.
Chemical Profile
- CAS Number
- 7664-93-9
- Chemical Formula
- H2O4S
- Molecular Weight
- 98.08 g/mol
- Boiling Point
- 554 °F at 760 mmHg (EPA, 1998)
- Melting Point
- 50.65 °F (EPA, 1998)
- Flash Point
- N/A °C
- Specific Gravity
- 1.841 (EPA, 1998) - Denser than water; will sink
- Appearance
- Sulfuric acid is a colorless oily liquid. It is soluble in water with release of heat. It is corrosive to metals and tissue. It will char wood and most other organic matter on contact, but is unlikely to cause a fire. Density 15 lb / gal. Long term exposure to low concentrations or short term exposure to high concentrations can result in adverse health effects from inhalation. It is used to make fertilizers and other chemicals, in petroleum refining, in iron and steel production, and for many other uses. Rate of onset: Immediate Persistence: Hours, days Odor threshold: Source/use/other hazard: Battery/dyes/paper/glue/metals industries; volcanic gas; toxic fumes when heated.
- Solubility
- Miscible (NIOSH, 2024)
- UN Number
- UN2796
- Hazard Class
- Class 8
- Packing Group
- II
- Proper Shipping Name
- Sulfuric acid, with not more than 51 percent acid
- GHS Signal Word
- Danger
Values sourced from Alliance Chemical's canonical chemistry registry. Certificate of Analysis (COA) per lot.
Industrial Applications
- Lead-Acid Battery Assembly: Used as the active electrolyte medium in commercial and industrial lead-acid batteries to facilitate reliable electrical charge transfer.
- Anodizing and Metal Finishing: Acts as a bath electrolyte in aluminum anodizing processes to create durable, corrosion-resistant protective oxide coatings on metal components.
- Chemical Synthesis and Manufacturing: Functions as a versatile reagent in the production of sulfates, inorganic salts, and other downstream industrial chemical compounds.
- pH Regulation in Industrial Systems: Serves as a highly effective pH neutralizer to adjust and stabilize process water chemistry in wastewater treatment facilities.
- Industrial Catalyst and Dehydrating Agent: Employed in specialized organic chemical processing where a controlled acidic medium is required to drive specific reaction pathways.
Hazmat & Shipping
Sulfuric Acid 50% — Electrolyte Grade is classified as a hazardous material due to its highly corrosive nature. According to Department of Transportation (DOT) regulations, this material must be shipped under the identifier UN2796, designated as Hazard Class 8 (Corrosive substances), and assigned to Packing Group II. The proper shipping name is Sulfuric acid, with not more than 51 percent acid. Every shipment is marked with the required Danger signal word to warn handlers of the chemical risks associated with corrosive liquids. GHS pictograms are not applicable as none are listed in the canonical authoritative profile for this dilution status.
Given the hazard statement H314 (Causes severe skin burns and eye damage), strict adherence to personal protective equipment (PPE) guidelines is mandatory when handling this material. Operators must wear chemical-resistant gloves (such as neoprene or nitrile), a full-face shield, splash-resistant goggles, and a protective apron to prevent direct dermal or ocular contact. A safety shower and eyewash station must be accessible in the immediate work area. We provide a Safety Data Sheet (SDS) provided with every order to ensure your facility maintains regulatory compliance and safe handling protocols.
Handling & Storage
Proper storage of this solution is critical for maintaining chemical integrity and operational safety. Store Sulfuric Acid 50% in a cool, dry, well-ventilated area, preferably within a temperature range of 50°F to 80°F (10°C to 27°C) to prevent thermal degradation or crystallization. Compatible container materials include high-density polyethylene (HDPE), polypropylene, and fluoropolymers. Avoid contact with incompatible materials, particularly strong bases, organic chemicals, active metals, and reducing agents, as reactions can release toxic fumes or generate dangerous levels of heat. Secondary containment is highly recommended.
Order & Documentation
Alliance Chemical provides reliable supply chains for Sulfuric Acid 50% - Electrolyte Grade in packages ranging from individual quarts to large drums. We ensure high-purity standards across all our offerings in our Acids collection. A Certificate of Analysis (COA) available upon request is provided for every production batch. To procure this material for your battery manufacturing facility or discuss specific shipping arrangements, please Request a Quote or Download the SDS.
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.
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