Description

1,2-Benzenedicarboxylic Acid Dihydrazide is a high-purity organic chemical intermediate with the CAS registry number 3645-45-2. This compound is valued for its dual hydrazide functional groups, which make it a versatile building block for synthesizing polymers, cross-linking agents, and specialty chemicals. It is essential for manufacturers in the polymer, pharmaceutical, and agrochemical industries seeking to develop products with enhanced thermal stability and mechanical properties.

Application

• Polymer Cross-Linking Agent: A key component in the production of heat-resistant polyimide resins and polybenzoxazoles (PBO).
• Epoxy Curing Agent: Used to formulate high-performance epoxy resin systems with excellent chemical and thermal resistance.
• Pharmaceutical Intermediate: Serves as a precursor in the synthesis of active pharmaceutical ingredients (APIs) and hydrazide-based drugs.
• Agrochemical Synthesis: Employed in the manufacture of herbicides, fungicides, and plant growth regulators.
• Metal Deactivator & Antioxidant: Functions as an additive in lubricants and fuels to chelate metal ions and inhibit oxidation.
• Flame Retardant Synergist: Used in polymer compositions to enhance flame-retardant properties.
• Analytical Reagent: Utilized as a derivatization agent in chromatography for the detection of carbonyl compounds.
• Adhesive & Coating Formulations: Imparts improved adhesion and durability in high-performance coatings and adhesives.

Basic Information

Product Name	1,2-Benzenedicarboxylic Acid Dihydrazide
CAS No.	3645-45-2
Molecular Formula	C8H10N4O2
Molecular Weight	194.19 g/mol
Synonyms	Phthalic Dihydrazide; Phthaloyl Dihydrazide; 1,2-Phthalic Dihydrazide; o-Phthalic Dihydrazide; PHD; PDH; Benzene-1,2-dicarboxylic acid dihydrazide; Terephthalic Dihydrazide (isomer)
EINECS	222-889-7

Quality Control

Our 1,2-Benzenedicarboxylic Acid Dihydrazide is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, identity, and impurity profiles. Certificates of Analysis (COA) documenting results for assay, moisture, and related substances are available for every shipment. We adhere to cGMP principles where applicable to ensure batch-to-batch consistency and traceability for our global B2B clients.

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). This material is hygroscopic (moisture-sensitive); the container must be kept tightly sealed after opening to prevent absorption of atmospheric moisture, which can affect product quality and performance.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 98.5%
Melting Point	300 - 305 °C
Loss on Drying	≤ 0.5%
Heavy Metals (as Pb)	≤ 10 ppm
Residue on Ignition	≤ 0.1%
Related Substances (HPLC)	Total impurities ≤ 1.0%

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