Description

4-Acetamido-5-Hydroxynaphthalene-2,7-Disulfonic Acid is a high-purity, multi-functional naphthalene derivative essential for advanced chemical synthesis. This compound serves as a critical intermediate in the production of high-value dyes, pigments, and specialty chemicals, where its unique sulfonic acid and acetamido functionalities enable precise molecular design. It is primarily required by manufacturers in the dye and pigment, pharmaceutical, and fine chemical industries seeking reliable, high-quality intermediates for complex synthesis.

Application

• Dye and Pigment Intermediate: A key building block for synthesizing azo dyes, acid dyes, and reactive dyes, particularly for textiles and leather.
• Pharmaceutical Synthesis: Used as a versatile intermediate in the development of active pharmaceutical ingredients (APIs) and other bioactive molecules.
• Fine Chemical Production: Employed in the manufacture of specialty chemicals, including optical brighteners and complex organic compounds.
• Research & Development: Serves as a valuable reagent in academic and industrial R&D labs for exploring new synthetic pathways.
• Chemical Analysis: Can be utilized as a standard or reagent in analytical chemistry applications.

Basic Information

Product Name	4-Acetamido-5-Hydroxynaphthalene-2,7-Disulfonic Acid
CAS No.	134-34-9
Molecular Formula	C₁₂H₁₁NO₈S₂
Molecular Weight	361.35 g/mol
Synonyms	5-Acetamido-4-hydroxynaphthalene-2,7-disulfonic Acid; 4-Acetylamino-5-hydroxy-2,7-naphthalenedisulfonic Acid; 1-Acetamido-8-hydroxynaphthalene-3,6-disulfonic Acid; 4-Acetamido-5-hydroxy-2,7-naphthalenedisulfonic Acid; 5-Acetylamino-4-hydroxy-2,7-naphthalenedisulfonic Acid; 4-Acetylamino-5-hydroxynaphthalene-2,7-disulfonic Acid; 5-Acetamido-4-hydroxynaphthalene-2,7-disulphonic Acid
EINECS	205-139-7

Quality Control

Our 4-Acetamido-5-Hydroxynaphthalene-2,7-Disulfonic Acid is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity. Each lot undergoes rigorous analytical testing, including HPLC for assay and purity determination. A comprehensive Certificate of Analysis (COA) detailing identity, purity, and impurity profiles is provided with every shipment to support your quality assurance protocols.

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). This product is hygroscopic (moisture-sensitive); the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product quality.

Specification

Item	Specification
Appearance	Off-white to light brown powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
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.