Description

Phthalonic Acid CAS NO 528-46-1 is a versatile aromatic dicarboxylic acid derivative, serving as a critical synthetic intermediate in advanced organic chemistry. Its unique structure, featuring both a carboxylic acid and a ketone group, makes it a valuable building block for creating complex molecules with specific functional properties. This compound is essential for research and development laboratories, pharmaceutical synthesis, and the production of specialty chemicals, including dyes, pigments, and polymer precursors.

Application

• Pharmaceutical Intermediate: Key precursor in the synthesis of active pharmaceutical ingredients (APIs) and complex heterocyclic compounds.
• Dye and Pigment Manufacturing: Used as a starting material for producing high-performance organic dyes, pigments, and colorants.
• Polymer Chemistry: Acts as a monomer or modifier in the synthesis of specialty polyesters, polyamides, and other performance polymers.
• Organic Synthesis Reagent: Employed in research laboratories for constructing complex molecular architectures, including ligands and catalysts.
• Analytical Chemistry: Can be used as a standard or derivatization agent in chromatographic analysis and other analytical methods.
• Agrochemical Synthesis: Intermediate in the production of certain herbicides, fungicides, and plant growth regulators.

Basic Information

Product Name	Phthalonic Acid
CAS No.	528-46-1
Molecular Formula	C8H6O4
Molecular Weight	166.13 g/mol
Synonyms	2-Carboxybenzaldehyde; 2-Formylbenzoic Acid; o-Formylbenzoic Acid; Phthalaldehydic Acid; Benzaldehyde-2-carboxylic acid; 1,2-Benzenedicarboxaldehyde; o-Carboxybenzaldehyde
EINECS	208-435-2

Quality Control

Our Phthalonic Acid is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing, including identification (IR), assay (HPLC), and impurity profile analysis, to ensure it meets the high-purity standards required for research and industrial synthesis. Certificates of Analysis (COA) detailing all test results are provided with every shipment to guarantee traceability and consistency.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). Keep away from strong bases, strong oxidizing agents, and sources of heat.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	96 - 100 °C
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.