Reagent Sulfuric Acid H2so4 50% High Purity Acid Solution For Battery And Water Testing

Reagent Sulfuric Acid 50% is a high-purity acid solution (typically meeting ACS specifications) that delivers moderate acidity with significantly reduced dehydrating, oxidizing, and charring action compared to concentrated grades. Its lower viscosity, safer handling characteristics, and ease of dilution make it ideal for analytical methods, mild synthetic transformations, and applications requiring precise acid control without aggressive reactivity.

• Convenient Dilution Stock: Safest and most practical concentration for preparing dilute sulfuric acid solutions (0.1 M to 2 M) with minimal heat generation and no fuming.
• pH Adjustment: Used to adjust the pH of buffers, culture media, and sample solutions where concentrated acid could cause localized overheating or spattering.
• Digestion and Decomposition: Applied in mild wet digestions for food, plant tissue, and environmental samples that are sensitive to strong oxidation; used in methods such as the determination of nitrogen by Kjeldahl where a 50% acid mix may be specified.
• Colorimetric and Photometric Analysis: Provides the acidic medium in phosphate (molybdenum blue), silica (molybdosilicate), and other color development reactions where moderate acid strength is optimal.
• Chromatography Mobile Phase Preparation: Convenient for preparing dilute acid modifiers for HPLC and ion chromatography without aggressive dilution effects.

• Mild Hydrolysis: Promotes the hydrolysis of esters, amides, and nitriles under controlled conditions; reduces the risk of over-oxidation, charring, or decarboxylation of sensitive substrates.
• Catalyst for Condensation Reactions: Effective in Knoevenagel, Pechmann, and aldol condensations where higher acid strengths could cause polymerization or dehydration side products.
• Deprotection and Cleavage: Applied in peptide and carbohydrate chemistry for selective removal of acid‑labile protecting groups (e.g., Boc, trityl) in a moderate acid environment.
• Diazotization and Azo Coupling: Serves as the acid source in the preparation of diazonium salts and subsequent coupling reactions to produce azo dyes and indicators.

• Sample Preservation: Acidifies water, wastewater, and soil extracts for ammonia, nitrate, phosphate, and trace metal preservation; its lower concentration minimizes splash risk during field use.
• Resin Regeneration: Can be easily diluted on-site to 5–10% solutions for regenerating cation exchange resins in water softeners and demineralization plants, ensuring high purity and low heavy metal contamination.
• TOC and TIC Analysis: Used in total organic carbon analyzers that specify a moderate sulfuric acid concentration for inorganic carbon removal, protecting sensitive instrument components.

• Lead-Acid Battery Electrolyte Adjustment: Used to top up or adjust the specific gravity of battery electrolyte when only a minor acid concentration increase is needed, avoiding the aggressive dilution of 98% acid.
• Electroplating and Metal Finishing: Provides the acid component in certain copper, nickel, and zinc plating baths; its moderate strength helps maintain bath stability and pH without causing aggressive attack on substrates.
• Surface Cleaning and Activation: Applied as a mild pickling solution for copper, brass, and mild steel prior to plating, soldering, or coating, effectively removing light oxides without excessive etching or fuming.

• Cleaning Solution Component: Used to prepare milder dichromate‑free or hydrogen peroxide‑based cleaning solutions for laboratory glassware, effective for removing organic residues without the extreme hazard of concentrated sulfuric acid.
• Desiccant Regeneration: Can be employed to regenerate silica gel and other drying agents where a less aggressive acid is preferred.