Description

1,3,7-Naphthalenetrisulfonic Acid is a key organic intermediate and sulfonating agent, valued for its high reactivity and ability to introduce sulfonic acid groups into other molecules. Its primary commercial importance lies in the synthesis of dyes, pigments, and fluorescent whitening agents, where it acts as a crucial building block. This product is essential for manufacturers in the chemical, textile, and specialty materials industries seeking to produce vibrant colors and advanced functional compounds.

Application

• Dye and Pigment Intermediate: A fundamental precursor in the manufacture of acid dyes, direct dyes, and other colorants.
• Fluorescent Whitening Agent (FWA) Production: Used in the synthesis of optical brighteners for paper, textiles, and detergents.
• Chemical Synthesis: Serves as a versatile sulfonating agent and building block for more complex organic molecules.
• Research & Development: Employed in laboratories for developing new sulfonated compounds and studying reaction mechanisms.
• Surfactant and Dispersant Precursor: Can be used to create specialized anionic surfactants with unique properties.

Basic Information

Product Name	1,3,7-Naphthalenetrisulfonic Acid
CAS No.	85-49-4
Molecular Formula	C₁₀H₈O₉S₃
Molecular Weight	368.36 g/mol
Synonyms	Naphthalene-1,3,7-trisulfonic Acid; 1,3,7-NTSA; 1-Naphthol-3,6,8-trisulfonic Acid; Naphthalenetrisulfonic Acid; 1,3,7-Trisulfonaphthalene; Acid Naphthalene Trisulfonic Acid
EINECS	201-613-7

Quality Control

Our 1,3,7-Naphthalenetrisulfonic Acid is produced under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure consistent purity and performance, meeting the specifications required for industrial synthesis. A Certificate of Analysis (COA) detailing key parameters such as assay, moisture content, and impurity profile is available for every shipment upon request.

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 material is hygroscopic (moisture-sensitive); ensure the container is kept tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Off-white to light brown powder or crystals
Identification (IR)	Conforms
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
Sulfate Ash	≤ 0.5%

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