Description

Pyromellitic Acid CAS NO 89-05-4 is a high-purity, multifunctional aromatic tetracarboxylic acid, serving as a critical building block in advanced polymer synthesis. Its unique molecular structure, featuring four carboxyl groups, enables the creation of materials with exceptional thermal stability and mechanical properties. This compound is essential for manufacturers in the polymer, electronics, and specialty chemical industries seeking to develop high-performance products.

Application

• Polyimide Synthesis: A key monomer for producing high-temperature resistant polyimide films, coatings, and engineering plastics used in aerospace and electronics.
• Epoxy Resin Curing Agent: Imparts superior heat resistance and mechanical strength to cured epoxy systems for advanced composites and adhesives.
• Pharmaceutical Intermediate: Used in the synthesis of complex drug molecules and active pharmaceutical ingredients (APIs).
• Dye and Pigment Manufacturing: Acts as an intermediate for producing high-performance, light-fast organic pigments and dyes.
• Crosslinking Agent: Enhances the thermal and chemical resistance of various polymers through crosslinking reactions.
• Chelating Agent: Forms stable complexes with metal ions for applications in water treatment and catalysis.
• Laboratory Research & Development: Serves as a versatile reagent in organic synthesis and material science research.

Basic Information

Product Name	Pyromellitic Acid
CAS No.	89-05-4
Molecular Formula	C10H6O8
Molecular Weight	254.15 g/mol
Synonyms	1,2,4,5-Benzenetetracarboxylic Acid; PMA; Benzene-1,2,4,5-tetracarboxylic Acid; Pyromellitic Acid Anhydride Precursor; 1,2,4,5-Tetracarboxybenzene; NSC 20189; Pyromellitic Acid (PMA)
EINECS	201-879-5

Quality Control

Our Pyromellitic Acid is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets exacting specifications for high-performance applications. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment to guarantee traceability and compliance.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic nature, the container must be kept tightly sealed after opening to prevent moisture absorption, which can affect product quality. Keep away from strong bases and incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0%
Melting Point	281 - 286 °C
Loss on Drying	≤ 1.0 %
Residue on Ignition	≤ 0.1 %
Heavy Metals (as Pb)	≤ 20 ppm

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