Description

4-Nitrophthalic Anhydride is a key nitrated aromatic anhydride intermediate of significant industrial importance. This compound is valued for its reactive anhydride group and electron-withdrawing nitro substituent, making it a versatile building block for synthesizing more complex molecules. It is primarily sought after by manufacturers in the agrochemical, pharmaceutical, and specialty dye industries for the production of advanced intermediates, active ingredients, and functional materials.

Application

• Agrochemical Intermediate: A crucial precursor in the synthesis of certain herbicides, fungicides, and plant growth regulators.
• Pharmaceutical Synthesis: Used as a building block for creating complex heterocyclic compounds and active pharmaceutical ingredients (APIs).
• Dye and Pigment Manufacturing: Serves as an intermediate for producing nitro-substituted phthalocyanine dyes and other high-performance colorants.
• Polymer Modification: Employed to introduce nitro-functional groups into polymer chains, altering properties like solubility and thermal stability for advanced materials.
• Research & Development: Utilized in organic synthesis laboratories for developing novel compounds and conducting structure-activity relationship (SAR) studies.
• Liquid Crystal and OLED Materials: Acts as a starting material for synthesizing electron-transport or emissive layer components in electronic displays.

Basic Information

Product Name	4-Nitrophthalic Anhydride
CAS No.	466-84-2
Molecular Formula	C8H3NO5
Molecular Weight	193.11 g/mol
Synonyms	4-Nitrophthalic anhydride; 5-Nitro-1,3-isobenzofurandione; 1,3-Dioxo-5-isobenzofurancarboxylic acid, 5-nitro-; 4-Nitro-1,3-dihydro-1,3-dioxoisobenzofuran; 5-Nitrophthalic anhydride; 4-Nitro-phthalsaeure-anhydrid; NSC 403107
EINECS	207-391-8

Quality Control

Our 4-Nitrophthalic Anhydride is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise specifications for industrial and research applications. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee traceability and 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). Due to its hygroscopic nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect product quality and reactivity.

Specification

Item	Specification
Appearance	Yellow to pale brown crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	160 - 165 °C
Loss on Drying	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm

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