Description

3-Nitrophthalic Anhydride is a versatile and high-value aromatic anhydride derivative, serving as a critical synthetic intermediate in advanced organic chemistry. Its core value lies in its reactive anhydride group and strategically placed nitro substituent, enabling precise functionalization for creating complex molecular architectures. This compound is essential for researchers and manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries, particularly for the synthesis of dyes, pigments, and active pharmaceutical ingredients (APIs).

Application

• Pharmaceutical Intermediate: Key building block for synthesizing complex molecules, including potential APIs and diagnostic agents.
• Dye & Pigment Manufacturing: Core precursor for producing high-performance azo dyes, pigments, and optical brighteners.
• Agrochemical Synthesis: Intermediate in the development of advanced herbicides, fungicides, and plant growth regulators.
• Polymer Chemistry: Monomer or modifier for creating specialty polyimides and other high-temperature, engineering-grade polymers.
• Organic Synthesis & Research: Versatile reagent for academic and industrial R&D, used in coupling reactions and heterocyclic compound synthesis.
• Liquid Crystal & Electronic Materials: Starting material for synthesizing components used in display technologies and organic semiconductors.

Basic Information

Product Name	3-Nitrophthalic Anhydride
CAS No.	641-70-3
Molecular Formula	C8H3NO5
Molecular Weight	193.11 g/mol
Synonyms	3-Nitrophthalic Acid Anhydride; 4-Nitro-1,3-dihydro-2-benzofuran-1,3-dione; 1,3-Dioxo-1,3-dihydro-2-benzofuran-4-nitro; 4-Nitroisobenzofuran-1,3-dione; 3-Nitro-1,3-dihydroisobenzofuran-1,3-dione; Nitrophthalic Anhydride; 3-NPA
EINECS	211-380-8

Quality Control

Our 3-Nitrophthalic Anhydride is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including HPLC for assay and purity, and is supplied with a corresponding Certificate of Analysis (COA). We adhere to relevant industry standards, and our quality commitment ensures the material is suitable for demanding applications in research and commercial synthesis.

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 stability and performance.

Specification

Item	Specification
Appearance	Yellow to light brown crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	163 - 167 °C
Loss on Drying	≤ 0.5%
Heavy Metals	≤ 20 ppm

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