Description
Specifications Table
Product Name – Perchloric acid, 70% AnalaR NORMAPUR® ACS
Quantity/Pack Size – 500 ml
Form – Liquid
Grade – ACS, AnalaR NORMAPUR®
Application – Oxidation, digestion, analytical reagent, trace metal analysis
Product Overview
Perchloric acid (HClO₄), supplied at 70% concentration under the AnalaR NORMAPUR® ACS grade, is a highly pure and stable reagent designed for demanding laboratory applications. This grade ensures minimal metallic impurities, making it suitable for trace metal analysis, oxidation reactions, and sample digestion where contamination must be avoided. The ACS certification guarantees compliance with American Chemical Society standards, ensuring reliability in quantitative analytical procedures. Its strong oxidizing properties and low volatility at room temperature provide consistent performance in wet digestion protocols, particularly for organic matrices. The acid is stabilized to prevent decomposition, enhancing shelf life while maintaining reactivity. Packaged in high-density polyethylene (HDPE) bottles, it resists chemical corrosion and external contamination. For labs requiring high-precision reagents, this 70% perchloric acid delivers reproducibility in gravimetric and volumetric analyses, with a clear, colorless appearance indicating purity. Handle with appropriate safety measures, as it is highly corrosive and reactive with organic materials.
FAQs
1. What is the difference between AnalaR NORMAPUR® and standard ACS-grade perchloric acid?
The AnalaR NORMAPUR® designation indicates an additional layer of purity testing beyond standard ACS requirements, specifically targeting ultra-low metal content and consistent batch-to-batch performance. This makes it preferable for trace analysis where even ppb-level impurities could interfere with results.
2. Can this perchloric acid be used for digesting biological samples?
Yes, 70% perchloric acid is commonly employed in wet digestion of biological tissues due to its ability to completely oxidize organic matter. However, it should be used in a fume hood with proper ventilation, and the sample size must be optimized to avoid violent reactions.
3. Is this product compatible with glass containers for long-term storage?
No, perchloric acid should never be stored in glass containers due to the risk of explosive perchlorate formation. Always use the original HDPE bottle or transfer to a dedicated perchloric acid-safe container made of PTFE or other approved polymers.
4. What safety precautions are essential when handling 70% perchloric acid?
Mandatory precautions include wearing acid-resistant gloves, a full-face shield, and a lab coat, along with working in a certified perchloric acid fume hood. Neutralize spills immediately with sodium bicarbonate, and avoid contact with organic solvents or reducing agents to prevent fires or explosions.
5. How does the concentration of 70% compare to lower grades for analytical work?
The 70% concentration offers a balance between reactivity and ease of handling for most lab applications. Lower concentrations (e.g., 60%) may require larger volumes for complete digestion, while higher concentrations (e.g., 72%) increase hazards without significant performance benefits for routine use.
