Description

5-(Acetylamino)-4-Hydroxy-3-(Phenylazo)Naphthalene-2,7-Disulphonic Acid is a specialized azo dye intermediate with a complex naphthalene disulphonic acid structure. This compound matters for its role as a key precursor in the synthesis of high-value, colorfast dyes and pigments, offering precise chromophoric properties. Industries that require it include textile manufacturing, ink and toner production, and research laboratories focused on advanced organic colorants and chemical sensors.

Application

• Primary intermediate for the synthesis of azo dyes and pigments used in textile coloring.
• Key building block in the production of specialty inks for packaging and security printing applications.
• Used in the manufacture of toner colorants for photocopiers and laser printers.
• Research chemical for developing novel optical sensors and pH indicators.
• Potential intermediate in the synthesis of biological stains for microscopy.
• Starting material for creating functional dyes with specific light-absorption properties.

Basic Information

Product Name	5-(Acetylamino)-4-Hydroxy-3-(Phenylazo)Naphthalene-2,7-Disulphonic Acid
CAS No.	25317-20-8
Molecular Formula	C18H15N3O8S2
Molecular Weight	465.46 g/mol
Synonyms	5-Acetamido-4-hydroxy-3-(phenylazo)naphthalene-2,7-disulfonic Acid; C.I. 18050; Acid Red 1 Intermediate; 3-(Phenylazo)-5-acetylamino-4-hydroxynaphthalene-2,7-disulphonic Acid; N-[4-Hydroxy-3-(phenylazo)-2,7-disulfo-1-naphthyl]acetamide; 1-Naphthalenesulfonic acid, 5-(acetylamino)-4-hydroxy-3-(2-phenyldiazenyl)-2,7-disulfo-; Azo Dye Intermediate 25317-20-8
EINECS	Contact for details

Quality Control

Our production of 5-(Acetylamino)-4-Hydroxy-3-(Phenylazo)Naphthalene-2,7-Disulphonic Acid adheres to stringent quality management protocols to ensure batch-to-batch consistency and purity. The product undergoes rigorous analytical testing, including HPLC for assay and impurity profiling. A Certificate of Analysis (COA) detailing identity, purity, and related substance data is provided with each shipment to support your quality assurance 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 nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect product stability and performance.

Specification

Item	Specification
Appearance	Brownish to reddish powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Related Substances (HPLC)	Total impurities ≤ 3.0%
Sulfated Ash	≤ 0.5%

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