Product Overview

Benzene 99.9% GC (CAS No. 71-43-2) is the parent monocyclic aromatic hydrocarbon, built from a planar six-membered carbon ring with a delocalised π-electron system. Its molecular symmetry, low polarity, and ability to dissolve many non-polar and weakly polar organic compounds give benzene a distinct solvent profile in analytical sample preparation.

The GC grade is intended for gas-chromatographic procedures requiring a high-purity aromatic solvent with controlled chromatographically detectable impurities and low non-volatile residue. It is suitable for preparing samples, calibration mixtures, and solvent blanks, and for extraction or dilution steps in validated methods that specifically prescribe benzene. Method suitability should account for the benzene solvent peak and its separation from the analytes of interest.

Typical Applications

• Diluent for samples and calibration mixtures in gas-chromatographic methods that specifically prescribe benzene.
• Preparation of solvent blanks for evaluating chromatographic background and system cleanliness.
• Extraction of compatible non-polar and weakly polar organic analytes before GC analysis.
• Preparation of aromatic hydrocarbon mixtures for method development and comparative chromatographic studies.
• Sample-preparation procedures requiring a volatile, non-polar aromatic medium.
• Evaluation of solvent effects, peak separation, and retention behaviour in compatible GC methods.

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 heat, direct sunlight, ignition sources, evaporation, moisture ingress, and volatile or particulate contamination. Minimise unnecessary container opening and use clean, solvent-compatible dispensing equipment to preserve chromatographic cleanliness.