Diphenic acid

CAS 482-05-32-(HO2C)C6H4C6H4-2-(CO2H)Chemical Synthesis

Diphenic acid (CAS 482-05-3) is a biphenyl-2,2′-dicarboxylic acid with the molecular formula C14H10O4. This white crystalline solid serves as a versatile organic building block in chemical synthesis. Its unique structure, featuring two carboxylic acid groups in ortho positions on a biphenyl core, allows for participation in various condensation and cyclization reactions. It is primarily used in the synthesis of complex organic molecules and advanced materials.

IUPAC: Biphenyl-2,2′-dicarboxylic acid

Email us

Diphenic acid (2-(HO2C)C6H4C6H4-2-(CO2H)) — chemical structure, CAS 482-05-3; Chemistry, fine chemical supplied by Tech Serve Solutions

Building BlocksC13 to C42+Carbonyl CompoundsCarboxylic AcidsChemical Synthesis

01 /Applications

Organic Synthesis Intermediate

Diphenic acid is a key intermediate in the synthesis of various organic compounds. Its dicarboxylic acid functionality enables its use in the formation of polymers, macrocycles, and other complex molecular architectures.

Ligand Synthesis

This compound is utilized in the preparation of specialized ligands for coordination chemistry. The biphenyl backbone and carboxylic acid groups provide a rigid framework suitable for chelating metal ions.

Material Science

Diphenic acid can be incorporated into the development of novel materials. Its structure is suitable for creating monomers for high-performance polymers or as a component in supramolecular assemblies.

02 /Properties

Molecular weight	242.23
Linear formula	2-(HO2C)C6H4C6H4-2-(CO2H)
Assay	≥95% (T)
Grade	technical
Melting point	227-229 °C(lit.)229-232 °C

03 /Safety & handling

GHS hazard pictogram: Harmful / irritant (GHS07) — Harmful / irritant

Warning

Hazard statements

H315Causes skin irritation
H319Causes serious eye irritation
H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust, fume, gas or vapours
P305IF IN EYES

Protective equipment	dust mask type N95 (US), Eyeshields, Gloves
Water hazard class (WGK, DE)	3
Hazard codes (EU)	Xi
Risk statements (R)	36/37/38
Safety statements (S)	26-37/39
Ignition residue	≤1%

Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.

04 /Identifiers & registry

CAS number

482-05-3

MDL number

MFCD00002464

PubChem substance

24866720

Beilstein registry

2053625

05 /Quality & supply

Documentation

Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.

Supply & logistics

Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.

06 /Frequently asked questions

What is Diphenic acid used for?

Diphenic acid is primarily used as an intermediate in organic synthesis, particularly for creating complex molecules, ligands for coordination chemistry, and components for material science applications. It is a key building block in chemical synthesis.

What is the CAS number and formula for Diphenic acid?

The CAS number for Diphenic acid is 482-05-3, and its linear formula is 2-(HO2C)C6H4C6H4-2-(CO2H).

What grade and purity does Tech Serve Solutions supply?

Tech Serve Solutions supplies Diphenic acid in technical grade with an assay of ≥95% (T). We do not represent this product as USP, BP, or EP grade.

How should Diphenic acid be handled safely?

Diphenic acid is classified with GHS07 symbol and the signal word 'Warning'. It causes skin irritation (H315), serious eye irritation (H319), and may cause respiratory irritation (H335). Recommended personal protective equipment includes a dust mask type N95 (US), eyeshields, and gloves. Ensure good ventilation.