Description

1-Naphthol-3,8-Disulfonic Acid Disodium Salt is a high-purity, water-soluble aromatic sulfonate derivative, serving as a critical intermediate in advanced chemical synthesis. Its value lies in providing a functionalized naphthalene backbone with excellent solubility and reactivity for creating complex molecules. This compound is essential for manufacturers in the dye, pigment, and specialty chemical industries seeking reliable intermediates for high-performance products.

Application

• Dye and Pigment Intermediate: A key precursor for the synthesis of acid dyes, reactive dyes, and azo pigments, particularly for textiles and inks.
• Chemical Synthesis Building Block: Used in organic synthesis to introduce sulfonated naphthol groups into larger molecules for pharmaceuticals or agrochemicals.
• Research & Development: Employed in laboratory settings for developing new chromophores, fluorescent markers, or specialty polymers.
• Analytical Reagent: Can serve as a standard or reagent in analytical chemistry for method development and calibration.

Basic Information

Product Name	1-Naphthol-3,8-Disulfonic Acid Disodium Salt
CAS No.	83732-80-3
Molecular Formula	C₁₀H₆Na₂O₇S₂
Molecular Weight	372.23 g/mol
Synonyms	1-Naphthol-3,8-disulfonic acid sodium salt; 3,8-Dihydroxy-5,10-naphthalenedisulfonic acid disodium salt; Disodium 1-naphthol-3,8-disulfonate; 8-Hydroxy-5,7-naphthalenedisulfonic acid disodium salt; 1-Hydroxynaphthalene-3,8-disulfonic acid disodium salt; NSC 403119; Acid Brown 14 intermediate
EINECS	Contact for details

Quality Control

Our 1-Naphthol-3,8-Disulfonic Acid Disodium Salt is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure identity, purity, and consistency. Certificates of Analysis (COA) documenting key parameters are available for all commercial shipments to support your quality assurance protocols.

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 must be kept in a dry environment to prevent caking or degradation.

Specification

Item	Specification
Appearance	Off-white to light brown powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
pH (5% Solution)	6.0 - 8.0
Heavy Metals (as Pb)	≤ 20 ppm

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