Benzene 99.5% / 99.9% CAS No. 71-43-2 Industrial & Pharmaceutical Grade

Name: Benzene 99.5% / 99.9% CAS No. 71-43-2 Industrial & Pharmaceutical Grade
Brand: Richnow Chem

This high-purity Benzene, available in 99.5% and 99.9% concentrations, is produced via advanced hydrodesulfurization and fractionation technologies from coke oven gas or petroleum refining streams . It features excellent solvency power, high volatility, and exceptional chemical stability as the simplest aromatic hydrocarbon. As a fundamental petrochemical building block, it is widely used in the synthesis of styrene, phenol, cyclohexane, and numerous other chemical intermediates . Its high purity and consistent performance make it ideal for critical applications requiring precise chemical properties. Each batch is rigorously tested using GC analysis to ensure consistent quality meeting industrial and pharmaceutical standards.

Scope of Application
· Used as the primary raw material for styrene monomer production, which is further processed into polystyrene, synthetic rubber, and ABS resins ;
· Acts as a key feedstock for phenol production, leading to phenolic resins and epoxy resins ;
· Functions as a raw material for cyclohexane synthesis, which is converted into nylon 6 and nylon 66 ;
· Widely applied in the pharmaceutical industry for the synthesis of various drugs and pharmaceutical intermediates ;
· Serves as a solvent in paints, varnishes, thinners, paint removers, and industrial coatings ;
· Used in the production of synthetic dyes, photographic films, pesticides, and synthetic fibers ;
· Acts as a solvent for lubricating oils, greases, waxes, resins, and artificial leather manufacturing ;
· Functions as an adhesive solvent and industrial cleaning agent ;
· Serves as a laboratory reagent and analytical standard for chromatographic applications.

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Product Features

Benzene is manufactured using continuous fractionation and hydrotreating technologies, ensuring consistent quality and precise purity control. The product features exceptional solvency for non-polar and aromatic compounds, with a boiling point of 80.1°C enabling efficient recovery and processing . Its molecular weight of 78.11 and specific gravity of 0.879 provide predictable handling characteristics . Available in multiple purity grades including 99.5% and 99.9% to suit different application requirements, from industrial synthesis to pharmaceutical manufacturing. Advanced GC analysis is employed to guarantee product purity and precise impurity profiling, with strict control over thiophene content (<0.6 ppm), total sulfur (<1 ppm), and non-aromatic hydrocarbons (<0.1%) .

Packaging and Transportation

· Available in epoxy-lined steel drums (150kg-200kg), IBC totes, and ISO tanks;

· Nitrogen-blanketed packaging available for moisture-sensitive applications;

· Customized packaging options available upon request to meet specific customer requirements;

· Classified as flammable liquid (Class 3) and toxic substance (Class 6), comply with all transportation safety regulations including UN1114 classification with Packing Group II

Safety and Storage

· Store in a cool, well-ventilated warehouse away from kindling and heat sources, with storage temperature not exceeding 30°C ;

· Keep containers tightly sealed to prevent evaporation and contamination;

· Avoid storage with strong oxidizing agents, halogens, or food-grade chemicals ;

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FAQ

What are the main differences between the 99.5% and 99.9% purity grades of Benzene?

The 99.5% grade is suitable for most industrial applications including solvent use and general chemical synthesis, offering cost-effectiveness. The 99.9% grade provides higher purity for sensitive applications such as pharmaceutical intermediate synthesis, styrene production for food-grade polymers, and catalytic processes where trace impurities like thiophene (<0.6 ppm), toluene (<200 ppm), and non-aromatics (<1000 ppm) must be strictly controlled

What are the primary downstream products manufactured from Benzene?

Benzene serves as the fundamental building block for three major chemical families: styrene (for polystyrene, synthetic rubber, ABS resins), phenol (for phenolic resins, epoxy resins, bisphenol A), and cyclohexane (for nylon 6 and nylon 66) . These materials are further processed into countless everyday items including plastic products, clothing, packaging materials, and automotive components.

What specifications do you offer for pharmaceutical-grade Benzene?

Our pharmaceutical-grade Benzene meets strict standards including minimum 99.9% purity, thiophene content below 0.6 mg/kg, total sulfur below 1 ppm, crystallization point minimum 5.45°C, and strict control over non-aromatic hydrocarbons (<1000 ppm) . Certificates of analysis with comprehensive impurity profiling are provided with each shipment confirming compliance with pharmaceutical industry requirements.