Description

Dinitronaphthalenesulphonic Acid is a specialized aromatic sulfonic acid derivative, serving as a crucial intermediate in the synthesis of dyes, pigments, and other fine chemicals. Its value lies in providing the naphthalene backbone and sulfonic acid functionality necessary for creating colorants with specific solubility and fastness properties. This compound is primarily needed by manufacturers in the dye and pigment industry, as well as by research institutions developing advanced organic materials.

Application

• Dye and Pigment Intermediate: A key building block for the synthesis of azo dyes, acid dyes, and other complex colorants.
• Chemical Synthesis: Used as a sulfonating agent or precursor in organic synthesis for pharmaceuticals and agrochemicals.
• Research & Development: Employed in laboratories for developing new polymeric materials and functional chemicals.
• Textile Industry: Integral to producing dyes used for coloring nylon, wool, and silk fibers.
• Paper Coloring: Used in the manufacture of dyes for specialty paper products.
• Analytical Reagent: Can serve as a standard or reagent in certain analytical chemistry methods.

Basic Information

Product Name	Dinitronaphthalenesulphonic Acid
CAS No.	71873-00-2
Molecular Formula	C₁₀H₆N₂O₇S
Molecular Weight	298.23 g/mol
Synonyms	Dinitronaphthalenesulfonic Acid; 1,5-Dinitronaphthalene-3-sulfonic Acid; Dinaphthol Sulfonic Acid (related); Naphthalenedisulfonic acid, dinitro derivative; Dinitronaphthalene Sulfonate; Dinitronaphthalene Sulphonate; Dinitronaphthalene-3-sulfonate; Dinitronaphthalene Sulphonic Acid
EINECS	Contact for details

Quality Control

Our Dinitronaphthalenesulphonic Acid is produced under strict quality management protocols. Each batch undergoes rigorous analytical testing to ensure consistency, purity, and compliance with agreed specifications. A comprehensive Certificate of Analysis (COA) detailing identity, assay, and impurity profiles is provided with every shipment to guarantee traceability and quality assurance for your processes.

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 (moisture-sensitive) nature, the container must be kept sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Yellow to brown 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.