Description

2-Amino-3,6,8-Naphthalenetrisulfonic Acid is a high-purity, multi-sulfonated aromatic intermediate essential for advanced organic synthesis. Its value lies in its unique molecular structure, which provides multiple reactive sites for creating complex, water-soluble dyes and functional materials. This compound is critically needed by manufacturers in the dye and pigment, pharmaceutical, and specialty chemical industries for producing vibrant, stable colors and sophisticated chemical entities.

Application

• Primary intermediate for the synthesis of acid dyes and reactive dyes, particularly for textiles like wool, silk, and nylon.
• Key building block in the production of fluorescent whitening agents (optical brighteners) for paper and detergent formulations.
• Precursor for specialty pigments and lake colors used in inks, coatings, and plastics.
• Intermediate in pharmaceutical research for creating sulfonated drug candidates with enhanced water solubility.
• Used in the synthesis of chemical sensors and diagnostic agents due to its fluorescent properties.
• Starting material for ion-exchange resins and other functional polymers.

Basic Information

Product Name	2-Amino-3,6,8-Naphthalenetrisulfonic Acid
CAS No.	118-03-6
Molecular Formula	C₁₀H₉NO₉S₃
Molecular Weight	383.37 g/mol
Synonyms	2-Aminonaphthalene-3,6,8-trisulfonic Acid; 3,6,8-Aminonaphthalenetrisulfonic Acid; 2-Naphthylamine-3,6,8-trisulfonic Acid; Acid Yellow 44 Intermediate; C.I. 56200; 2-Amino-1-naphthalenesulfonic acid, 3,6,8-trisulfo derivative; 118-03-6; 2-Amino-3,6,8-trisulfonaphthalene
EINECS	204-226-5

Quality Control

Our 2-Amino-3,6,8-Naphthalenetrisulfonic Acid is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets exacting industry specifications. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee traceability and compliance.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent absorption of atmospheric moisture, which can affect product quality and handling.

Specification

Item	Specification
Appearance	Off-white to light brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
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.