Description

Phthalic Acid CAS NO 88-99-3 is a white crystalline organic compound belonging to the class of aromatic dicarboxylic acids. It serves as a fundamental building block in the chemical industry, prized for its versatility in synthesizing a wide range of high-value derivatives. This compound is essential for manufacturers in the plastics, coatings, and specialty chemical sectors seeking reliable raw material quality and consistent supply for their production processes.

Application

• Plasticizer Production: Primary raw material for manufacturing phthalate plasticizers like DOP and DINP, which impart flexibility to PVC products such as cables, flooring, and films.
• Unsaturated Polyester Resins (UPR): Key intermediate in the production of UPRs used for fiberglass-reinforced plastics in automotive parts, marine hulls, and construction panels.
• Alkyd Resins: A crucial component in the synthesis of alkyd resins, which are widely used in industrial and decorative paints and coatings for their durability and gloss.
• Dyes and Pigments: Acts as a precursor in the manufacture of anthraquinone and phthalein dyes, as well as certain high-performance pigments.
• Pharmaceutical Intermediates: Used in the synthesis of certain active pharmaceutical ingredients (APIs) and other fine chemicals.
• Flame Retardants: Employed in the production of certain halogen-free flame retardant additives for polymers.

Basic Information

Product Name	Phthalic Acid
CAS No.	88-99-3
Molecular Formula	C8H6O4
Molecular Weight	166.13 g/mol
Synonyms	1,2-Benzenedicarboxylic Acid; o-Phthalic Acid; Benzene-1,2-dicarboxylic Acid; ortho-Phthalic Acid; Phthalandione (dione form); o-Dicarboxybenzene; Sunftal 20; Vulnopol NM
EINECS	201-873-2

Quality Control

Our Phthalic Acid is manufactured under a stringent quality management system to ensure batch-to-batch consistency and high purity. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing key parameters such as assay, melting point, and impurity profiles. Our quality protocols are designed to meet the demanding requirements of industrial and fine chemical applications, ensuring reliable performance in your formulations.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials such as strong bases and oxidizing agents. Recommended storage temperature is between 15°C and 25°C. The product is hygroscopic (moisture-sensitive); keep the container tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	White crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 99.5%
Melting Point	210 - 211 °C
Loss on Drying	≤ 0.5%
Sulfated Ash	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm

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