Description

Terephthalic Dihydrazide is a high-purity organic compound with the CAS number 136-64-1, serving as a critical building block and cross-linking agent in advanced polymer synthesis. Its bifunctional hydrazide structure makes it an essential intermediate for creating high-performance materials with enhanced thermal and mechanical properties. This product is primarily sought by manufacturers in the polymer, specialty chemical, and pharmaceutical industries for applications ranging from epoxy curing to the synthesis of functional polymers and pharmaceutical intermediates.

Application

• Polymer Cross-linking Agent: Used as a curing agent and chain extender for epoxy resins, polyurethanes, and other thermosetting polymers to improve heat resistance and mechanical strength.
• Pharmaceutical Intermediate: Serves as a key synthon in the production of active pharmaceutical ingredients (APIs) and various hydrazide-based drug molecules.
• Synthesis of Polyhydrazides: A fundamental monomer for the production of aromatic polyhydrazides, which are high-temperature engineering plastics.
• Metal Chelation: Utilized in the formulation of chelating agents and metal ion scavengers for water treatment and analytical chemistry.
• Adhesive & Coating Formulations: Incorporated into specialty adhesives and coating systems to enhance adhesion, chemical resistance, and durability.
• Chemical Research & Development: Employed in organic synthesis laboratories as a versatile reagent for constructing heterocyclic compounds and functional materials.

Basic Information

Product Name	Terephthalic Dihydrazide
CAS No.	136-64-1
Molecular Formula	C8H10N4O2
Molecular Weight	194.19 g/mol
Synonyms	1,4-Benzenedicarboxylic acid, dihydrazide; Terephthalic acid dihydrazide; p-Phthalic dihydrazide; TPAH; Terephthaloyl dihydrazide; p-Phenylenediacetic acid dihydrazide; Benzene-1,4-dicarbohydrazide; TDH
EINECS	205-250-9

Quality Control

Our Terephthalic Dihydrazide is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure it meets precise chemical and physical specifications. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing purity, identity, and impurity profiles. Our quality commitment ensures batch-to-batch consistency for your critical industrial and research applications.

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 container tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0%
Melting Point	300 - 310 °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.