Description
Specifications Table
Product Name – Hydrofluoric acid, 48% AR
Quantity/Pack Size – 500 ml
Form – Liquid
Grade – AR (Analytical Reagent)
Application – Etching, glass cleaning, mineral dissolution, analytical chemistry
Product Overview
Hydrofluoric acid (HF), 48% AR grade, is a highly corrosive and reactive inorganic acid widely used in laboratory settings for its unique ability to dissolve silicates and oxides. This analytical reagent-grade HF ensures minimal impurities, making it ideal for applications requiring precision, such as glass etching, surface cleaning of metals, and sample preparation in analytical chemistry. The 48% concentration provides a balanced strength for controlled reactions while maintaining stability during storage when handled properly. Due to its hazardous nature, it demands strict safety protocols, including the use of personal protective equipment (PPE) like gloves, goggles, and lab coats, along with proper ventilation. The acid is supplied in a high-density polyethylene (HDPE) bottle to prevent leakage and reactions with glass containers. Its versatility extends to industrial and research applications where selective dissolution of materials is critical. Always store in a cool, dry place away from incompatible substances like bases, metals, and organic compounds to prevent violent reactions. Neutralization with calcium gluconate gel should be readily available in case of accidental exposure. This product adheres to stringent quality standards, ensuring consistency and reliability for repetitive lab procedures.
FAQs
1. What precautions should be taken while handling 48% hydrofluoric acid?
Hydrofluoric acid requires extreme caution due to its ability to penetrate skin and cause deep tissue damage. Always wear nitrile or neoprene gloves, a face shield, and a lab coat. Work in a fume hood to avoid inhalation, and have calcium gluconate gel nearby for emergency treatment. Avoid glass containers, as HF reacts with silica.
2. Can this hydrofluoric acid be used for etching silicon wafers?
Yes, 48% AR-grade hydrofluoric acid is commonly used for etching silicon wafers in semiconductor and microfabrication processes. Its ability to dissolve silicon dioxide makes it effective for creating precise patterns. However, dilution and process parameters should be optimized based on the specific application to avoid over-etching.
3. What is the shelf life of hydrofluoric acid when stored properly?
When stored in its original HDPE container, tightly sealed, and kept in a cool, dry place away from direct sunlight and incompatible materials, hydrofluoric acid can retain its stability for up to 2 years. Over time, slight concentration changes may occur due to evaporation, so periodic verification of concentration is recommended for critical applications.
4. Is this hydrofluoric acid compatible with plastic containers?
This product is supplied in an HDPE (high-density polyethylene) bottle, which is resistant to hydrofluoric acid. However, not all plastics are compatible—avoid using containers made of PVC, PTFE, or other materials that may degrade or react. Always check chemical compatibility charts before transferring or storing HF in alternative containers.
5. How should spills of hydrofluoric acid be managed in the lab?
In case of a spill, immediately evacuate the area and restrict access. Neutralize small spills with calcium carbonate or soda ash, then absorb the residue with an inert material like vermiculite. For larger spills, use a HF-specific spill kit and follow institutional safety protocols. Never use water alone, as it can spread the acid. Dispose of contaminated materials as hazardous waste according to local regulations.
