Description
Specifications Table
Product Name – BENZENE 99.5% AR/ACS
Quantity/Pack Size – 500 ml, 1000 ml, 2500 ml
Form – Liquid
Grade – AR/ACS
Application – Solvent, synthesis, chromatography
Product Overview
Benzene 99.5% AR/ACS is a high-purity, colorless liquid hydrocarbon with a characteristic aromatic odor, widely recognized for its role as a fundamental solvent in laboratory settings. This grade meets both Analytical Reagent (AR) and American Chemical Society (ACS) standards, ensuring exceptional purity and consistency for critical applications. Its non-polar nature and low viscosity make it an excellent choice for dissolving non-polar compounds, while its high volatility allows for efficient evaporation in processes like recrystallization and thin-layer chromatography. The product is meticulously distilled to remove impurities, including water, sulfur compounds, and other organic contaminants, guaranteeing reliable performance in sensitive analytical procedures. Its stability under standard laboratory conditions further enhances its utility as a reference solvent in spectroscopic and chromatographic analyses. The 99.5% purity level minimizes interference in experimental results, making it indispensable for precise quantitative and qualitative analyses. Proper handling is essential due to its flammability and potential health hazards, requiring storage in tightly sealed containers away from ignition sources.
FAQs
1. What is the shelf life of Benzene 99.5% AR/ACS when stored properly?
When stored in a cool, well-ventilated area in tightly sealed original containers, away from direct sunlight and ignition sources, Benzene 99.5% AR/ACS typically maintains its specified purity for up to 24 months from the date of manufacture. Regularly check for any signs of contamination or evaporation before use.
2. Can this grade of benzene be used as a substitute for HPLC-grade benzene in chromatographic applications?
While Benzene 99.5% AR/ACS offers high purity, HPLC-grade benzene undergoes additional purification steps to remove UV-absorbing impurities, making it more suitable for high-performance liquid chromatography. For critical HPLC applications, it is recommended to use benzene specifically labeled for HPLC to avoid potential interference in detection.
3. What precautions should be taken when handling Benzene 99.5% AR/ACS in a laboratory?
Always handle benzene in a fume hood or well-ventilated area, wearing appropriate personal protective equipment, including chemical-resistant gloves, safety goggles, and a lab coat. Avoid skin contact, inhalation of vapors, and ingestion, as benzene is classified as a carcinogen. Use spark-proof tools and equipment to prevent ignition, and ensure proper grounding when transferring the liquid.
4. Is this benzene compatible with plastic containers for short-term storage?
Benzene can dissolve or degrade many plastics, including polyethylene and polypropylene, over time. For short-term storage, use containers made of glass or PTFE (polytetrafluoroethylene), which are resistant to benzene. Always transfer the solvent to a compatible container if the original packaging is compromised.
5. How does the AR/ACS grade differ from technical-grade benzene in terms of impurities?
AR/ACS-grade benzene undergoes rigorous purification to meet strict standards, with maximum allowable limits for impurities such as water (typically <0.05%), sulfur compounds, and non-volatile residues. Technical-grade benzene, on the other hand, contains higher levels of impurities and is generally used in industrial applications where high purity is not critical. The AR/ACS grade is preferred for laboratory and analytical work due to its consistency and reliability.
