Reagent Grade Basic Inorganic Chemicals 41% Purity Liquid Sulfuric Acid

Reagent Sulfuric Acid 41% is a high-purity acid solution (typically meeting ACS specifications) that delivers moderate acidity with low viscosity, minimal fuming, and very low heat generation upon dilution. This specific concentration is particularly convenient for preparing lead-acid battery electrolyte, performing analytical procedures that require precise moderate acid strength, and carrying out mild chemical transformations where aggressive charring or dehydration must be avoided.

• Lead-Acid Battery Filling: The target specific gravity for most lead-acid battery electrolytes (1.22–1.28, equivalent to 33–37% H₂SO₄) can be achieved safely and accurately by diluting 41% acid with distilled water. The small dilution factor generates far less heat than using 50–98% grades, reducing risk.

• Electrolyte Topping-Up and Adjustment: Used in battery manufacturing, service centers, and telecom backup power maintenance to adjust electrolyte levels with a high-purity, trace-metal-controlled acid source.

• Extremely Safe Dilution Stock: Ideal for preparing dilute sulfuric acid solutions (0.05 M to 2 M) for titrations, pH adjustment, and reagent preparation, with virtually no fuming or splashing.

• pH Control and Sample Preservation: Used to acidify water, wastewater, culture media, and buffer solutions; the moderate strength makes field handling easier and reduces accidental over-acidification.

• COD and Wet Digestion Methods: Applied in Chemical Oxygen Demand determinations and mild sample digestions where a defined, moderate sulfuric acid concentration is specified.

• Colorimetric and Spectrophotometric Analysis: Provides the acidic medium for phosphate, silica, and other color-development reactions where precise control of acid normality is critical.

• Mild Hydrolysis and Catalysis: Promotes the hydrolysis of esters, amides, and nitriles without the charring or decarboxylation risks associated with stronger acid. Suitable for sensitive intermediates in pharmaceutical and fragrance synthesis.

• Diazotization and Azo Coupling: Serves as the acid source in forming diazonium salts and subsequent coupling to produce azo dyes, pigments, and indicators.

• Protecting Group Removal: Applied in peptide and carbohydrate chemistry for selective cleavage of acid‑labile protecting groups under gentle, controlled conditions.

• Water and Wastewater Acidification: Preserves samples for ammonia, nitrate, phosphate, and trace metal analysis; the lower concentration reduces handling hazards in the field.

• Cation Exchange Resin Regeneration: Conveniently diluted on-site to 5–10% for regenerating resins in water softeners and demineralizers, with minimal heavy metal contamination.

• Soil and Plant Tissue Extraction: Used in standard soil nutrient extractants (e.g., Mehlich‑III) and plant ash digestion, where dilute sulfuric acid is a required component.

• Mild Pickling and Activation: Cleans light oxides from copper, brass, and mild steel surfaces prior to plating, soldering, or coating. The 41% strength provides effective cleaning without aggressive etching or hazardous fuming.

• Electroplating Bath Component: Used in certain copper, nickel, and zinc plating baths to maintain acidity and conductivity.

• Cleaning Solution Preparation: Component in mild, dichromate‑free glassware cleaning solutions, effective for removing organic residues with enhanced operator safety.

• High-Purity Sulfate Production: Starting material for preparing reagent‑grade metal sulfates used in analytical standards, catalysts, and pharmaceutical excipients.