Description

7-Amino-3-Nitro-1-Naphthalenesulfonic Acid is a specialized naphthalene-based sulfonic acid derivative that serves as a critical intermediate in the synthesis of complex organic molecules. Its unique structure, featuring both amino and nitro functional groups on the naphthalene ring, makes it a valuable building block for creating high-value dyes and pigments. This compound is primarily sought by manufacturers in the colorant and specialty chemical industries who require consistent quality and reliable supply chains for their production processes.

Application

• Dye and Pigment Intermediate: A key precursor in the synthesis of azo dyes, acid dyes, and other complex colorants, particularly for textiles, leather, and paper.
• Chemical Synthesis Building Block: Used in organic synthesis to introduce the naphthalenesulfonic acid moiety into larger molecules for pharmaceuticals or agrochemical research.
• Research & Development: Employed in academic and industrial R&D laboratories for studying sulfonation reactions and developing new chromophores.
• Specialty Chemical Manufacturing: Serves as an intermediate in the production of optical brighteners, fluorescent whiteners, and other performance chemicals.

Basic Information

Product Name	7-Amino-3-Nitro-1-Naphthalenesulfonic Acid
CAS No.	35439-66-8
Molecular Formula	C₁₀H₈N₂O₅S
Molecular Weight	268.25 g/mol
Synonyms	7-Amino-3-nitronaphthalene-1-sulfonic acid; 1-Naphthalenesulfonic acid, 7-amino-3-nitro-; 3-Nitro-7-amino-1-naphthalenesulfonic acid; 7-Amino-3-nitro-1-naphthalenesulphonic acid; 7-Amino-3-nitro-1-naphthalenesulfonate; 35439-66-8; 7-Amino-3-nitro-1-naphthalenesulfonic acid (ACI)
EINECS	Contact for details

Quality Control

Our production of 7-Amino-3-Nitro-1-Naphthalenesulfonic Acid adheres to stringent quality management protocols. Each batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise specifications. Certificates of Analysis (COA) documenting all critical parameters are available upon request to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); keep the container tightly sealed to minimize exposure to atmospheric humidity.

Specification

Item	Specification
Appearance	Yellow to brownish powder or crystals
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

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