Product Overview

Benzene 99.5% AR/ACS (CAS No. 71-43-2) is the parent monocyclic aromatic hydrocarbon, characterised by a planar six-membered carbon ring and a delocalised π-electron system. Its non-polar, aprotic character and symmetrical aromatic structure provide a distinct solvating environment for many non-polar and weakly polar organic substances. These properties have established benzene as a classical reagent solvent and reference compound in analytical and physical-organic chemistry.

The AR/ACS grade is intended for analytical reagent preparation, sample-treatment procedures, extraction and partition studies, and laboratory quality-control methods that specifically prescribe reagent-grade benzene. It is appropriate for established analytical work in which solvent-related impurities may affect reagent blanks, dissolution, phase separation, recovery, or interpretation of experimental results.

Typical Applications

• Preparation of analytical reagent, sample, and test solutions in procedures that specifically prescribe benzene.
• Liquid–liquid extraction and partition procedures involving non-polar or weakly polar organic substances.
• Solvent for selected classical colour reactions, derivatisation procedures, and non-aqueous analytical operations.
• Reagent-blank, recovery, and method-verification studies requiring an ACS-quality aromatic solvent.
• Solubility, distribution, molecular-interaction, and phase-behaviour investigations involving aromatic media.
• Laboratory quality-control procedures and recognised standard methods in which benzene is specified as the solvent or reagent medium.

Common Synonyms

• Benzol
• Benzole
• Cyclohexa-1,3,5-triene
• 1,3,5-Cyclohexatriene
• [6]Annulene

Storage Conditions

Store in a tightly closed container in a cool, dry, and well-ventilated area. Protect from direct sunlight, heat, ignition sources, evaporation, and contamination. Minimise unnecessary container opening and reseal promptly after use to maintain concentration and analytical cleanliness.