Description
Diphenyl extra pure is most commonly the extra pure grade of biphenyl (also called diphenyl), an aromatic hydrocarbon consisting of two benzene rings linked by a single carbon–carbon bond. It is supplied as a high-purity crystalline solid for laboratory and industrial use, typically with assay ≥99%.
Product overview
Chemical name: Biphenyl
Synonyms: Diphenyl, phenylbenzene, bibenzene, lemonene.
CAS number: 92-52-4.
Grade: Extra pure / AR-type, purity usually not less than 99%.
Appearance: White to faint yellow crystals, flakes or powder, with a pleasant, mild aromatic odor.
Chemical properties
Molecular formula: C₁₂H₁₀.
Molecular weight: 154.21 g/mol.
Melting point: about 68–70 °C.
Boiling point: about 255 °C at 760 mmHg.
Solubility: Insoluble in water; soluble in alcohol, ether and many organic solvents such as benzene and carbon tetrachloride.
Uses and applications
Used as a solvent and high-boiling carrier or heat-transfer medium in organic synthesis and process chemistry.
Employed as a preservative and fungistatic agent for citrus or other fruits in industrial/technical settings (not for direct food use in lab grade).
Serves as an intermediate and structural building block in the synthesis of biphenyl derivatives, dyes, pharmaceuticals and specialty chemicals.
Storage and safety (catalogue style)
Storage: Keep in tightly closed container, in a cool, dry, well-ventilated place; typically stored below about 30 °C and away from strong oxidizing agents.
Hazard notes (short): Irritating to skin, eyes and respiratory tract and very toxic to aquatic life; harmful if swallowed and environmentally hazardous, so avoid release to the environment and handle with appropriate PPE.
Intended use: For laboratory and industrial use only; not for drug, food, cosmetic or household applications.