Description
Specifications Table
Product Name – Sulfuric acid, 0.5 mol/L (1N) AVS TITRINORM® volumetric solution
Quantity/Pack Size – 10 L
Form – Liquid (aqueous solution)
Grade – AVS TITRINORM® (Analytical Volumetric Standard)
Application – Acid-base titrations, volumetric analysis, standardization of bases
Product Overview
This 0.5 mol/L (1N) sulfuric acid volumetric solution is a pre-standardized, high-precision reagent designed for analytical laboratories requiring exact concentration accuracy. Formulated under stringent quality controls, it adheres to AVS TITRINORM® standards, eliminating the need for in-house standardization and reducing procedural errors. The solution is prepared using ultra-pure sulfuric acid and deionized water, ensuring minimal impurities that could interfere with titration endpoints or spectroscopic measurements. Its stable shelf life is maintained through specialized packaging that prevents carbon dioxide absorption, which could alter molarity over time. The amber HDPE container with a tamper-evident seal protects against light-induced degradation while facilitating safe handling. This reagent is particularly valued in environments where reproducibility is critical, as its certified concentration (0.5000 ± 0.0005 mol/L at 20°C) is traceable to NIST standards. The solution’s low heavy metal content (<0.1 ppm) and negligible chloride interference make it suitable for sensitive applications like environmental water testing or pharmaceutical assays. For laboratories prioritizing efficiency, this ready-to-use formulation eliminates the hazards and time associated with preparing concentrated sulfuric acid dilutions.
FAQs
1. What is the exact molarity tolerance for this sulfuric acid solution?
The solution is certified to 0.5000 ± 0.0005 mol/L at 20°C, with tolerance values provided on the certificate of analysis included with each batch. This precision is maintained through automated dispensing systems during production.
2. Can this solution be used directly for titrating weak bases like ammonia?
Yes, the 0.5M concentration is ideal for titrating weak bases, though you may need to use a mixed indicator (e.g., methyl red-bromocresol green) for sharper endpoint detection. The solution’s low impurity profile ensures accurate equivalence point determination even with less distinct color changes.
3. How does the AVS TITRINORM® certification differ from standard analytical grade?
AVS TITRINORM® certification guarantees that the solution has undergone dynamic standardization against primary standards (e.g., sodium carbonate) in an ISO-accredited process, whereas analytical grade typically refers to purity without volumetric assurance. This means you can use the stated molarity directly without in-house verification.
4. What is the recommended storage temperature to maintain stability?
Store between 15–25°C in the original tightly sealed container. Avoid refrigeration, as temperature fluctuations can cause condensation that may dilute the solution. The HDPE bottle is designed to minimize permeability, but prolonged exposure to temperatures above 30°C should be avoided.
5. Is this solution compatible with automatic titrators?
The solution is fully compatible with automatic titrators, provided the instrument is calibrated for sulfuric acid titrations. Its low viscosity and absence of particulate matter prevent clogging in microburettes or dosing systems. For best results, use a dedicated acid-resistant tubing kit if your titrator requires it.
