Description

4,5-Dinitrophthalic Acid (CAS NO 90348-28-0) is a specialized aromatic nitro dicarboxylic acid derivative that serves as a critical high-purity intermediate in advanced chemical synthesis. Its value lies in providing a functionalized aromatic core for constructing complex molecules, particularly in the development of dyes, pigments, and performance materials. This compound is essential for manufacturers and R&D laboratories in the fine chemical, agrochemical, and advanced material sectors seeking to introduce specific nitro and carboxylic acid functionalities into their target structures.

Application

• Key intermediate in the synthesis of high-performance dyes and organic pigments.
• Precursor for the development of specialized agrochemicals and pharmaceutical active ingredients.
• Building block for advanced polymers and functional materials requiring specific aromatic architectures.
• Starting material for the preparation of phthalimide derivatives and other heterocyclic compounds.
• Used in research and development for creating novel fluorescent markers or sensor molecules.
• Intermediate in the production of corrosion inhibitors and specialty additives.

Basic Information

Product Name	4,5-Dinitrophthalic Acid
CAS No.	90348-28-0
Molecular Formula	C8H4N2O8
Molecular Weight	256.13 g/mol
Synonyms	4,5-Dinitro-1,2-benzenedicarboxylic Acid; 4,5-Dinitrophthalic Acid; 1,2-Benzenedicarboxylic acid, 4,5-dinitro-; Phthalic acid, 4,5-dinitro-
EINECS	Contact for details

Quality Control

Our 4,5-Dinitrophthalic Acid is produced under strict quality management protocols to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including assay, impurity profiling, and identity confirmation. A Certificate of Analysis (COA) detailing all specifications and test results is provided with every shipment to guarantee compliance with your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong bases and reducing agents.

Specification

Item	Specification
Appearance	Yellow to light brown crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

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