Description

1,2-Naphthalic Anhydride is a high-purity, versatile organic intermediate of significant industrial importance. Its unique fused aromatic structure makes it a valuable precursor for synthesizing advanced dyes, pigments, and optical brighteners. This compound is essential for manufacturers in the agrochemical, specialty chemical, and advanced materials sectors seeking to develop high-performance products.

Application

• Dye and Pigment Intermediate: A key building block for the synthesis of high-value vat dyes, fluorescent dyes, and organic pigments.
• Agrochemical Synthesis: Used in the production of certain herbicides and plant growth regulators.
• Optical Brightener Production: Serves as a crucial starting material for manufacturing fluorescent whitening agents used in paper, textiles, and detergents.
• Polymer Additives: Employed in the creation of specialty monomers and additives to enhance polymer properties.
• Pharmaceutical Intermediate: Utilized in the research and synthesis of complex pharmaceutical molecules.
• Organic Synthesis: Acts as a versatile reagent in various organic reactions, including Diels-Alder and condensation reactions, for academic and industrial R&D.

Basic Information

Product Name	1,2-Naphthalic Anhydride
CAS No.	5343-99-7
Molecular Formula	C₁₂H₆O₃
Molecular Weight	198.18 g/mol
Synonyms	1,2-Naphthalenedicarboxylic Anhydride; Naphthalene-1,2-dicarboxylic Anhydride; 1,2-Naphthalic Acid Anhydride; 1,2-Naphthoic Anhydride; 3H-Naphtho[1,2-c]furan-1,3-dione; Naphtho[1,2-c]furan-1,3-dione; 1,2-NA
EINECS	226-291-2

Quality Control

Our 1,2-Naphthalic Anhydride is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure it meets the highest standards of purity and consistency. A detailed Certificate of Analysis (COA) is provided with every shipment, confirming compliance with agreed specifications.

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) and light-sensitive; therefore, containers must be kept tightly sealed after opening to minimize exposure to atmospheric moisture and light.

Specification

Item	Specification
Appearance	Off-white to light yellow crystalline powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 98.0%
Melting Point	268 - 272 °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.