Description

2-Hydroxyterephthalic Acid is a valuable aromatic dicarboxylic acid derivative, distinguished by the presence of a hydroxyl group on the terephthalic acid backbone. This functionalization makes it a versatile and high-value intermediate for synthesizing advanced polymers, specialty chemicals, and functional materials. It is essential for manufacturers and R&D teams in the polymer, pharmaceutical, and fine chemical industries seeking to develop products with enhanced properties such as modified solubility, reactivity, or biocompatibility.

Application

• Polymer Modification: A key monomer for producing modified polyesters (PET) and polyamides to alter crystallinity, thermal stability, and dyeability.
• Metal-Organic Frameworks (MOFs): Serves as a functional organic linker to construct MOFs with specific pore geometries and surface functionalities for gas storage, separation, and catalysis.
• Pharmaceutical Intermediates: Used in the synthesis of complex drug molecules and active pharmaceutical ingredients (APIs), particularly those requiring a rigid, functionalized aromatic core.
• Liquid Crystal Polymers (LCPs): An important building block for high-performance LCPs used in electronics, aerospace, and automotive applications.
• Coordination Chemistry & Chelating Agents: Acts as a chelating ligand for various metal ions, useful in catalysis and the preparation of metal complexes.
• Dye & Pigment Synthesis: Intermediate for manufacturing specialized dyes, pigments, and optical brighteners.
• Research & Development: A valuable reagent in academic and industrial R&D for exploring new materials and chemical processes.

Basic Information

Product Name	2-Hydroxyterephthalic Acid
CAS No.	636-94-2
Molecular Formula	C8H6O5
Molecular Weight	182.13 g/mol
Synonyms	2-Hydroxybenzene-1,4-dicarboxylic Acid; 1,4-Benzenedicarboxylic Acid, 2-Hydroxy-; Terephthalic Acid, 2-Hydroxy-; 2-Carboxy-4-hydroxybenzoic Acid; 4-Carboxy-2-hydroxybenzoic Acid; 2,5-Dicarboxyphenol; 2-HTA
EINECS	211-277-8

Quality Control

Our 2-Hydroxyterephthalic Acid is produced under a stringent quality management system. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets exacting standards for research and industrial use. Certificates of Analysis (COA) detailing all specifications are provided with every shipment to guarantee traceability and batch-to-batch consistency.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). This product is hygroscopic (moisture-sensitive); keep the original container tightly sealed to minimize exposure to atmospheric humidity.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 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.