Description

4-[[4-(Diethylamino)-2-Hydroxyphenyl]Azo]-3-Hydroxy-2,7-Naphthalenedisulfonic Acid is a high-purity, water-soluble azo dye intermediate of significant commercial importance. Its core value lies in its ability to impart vibrant and stable coloration, making it a critical precursor for the synthesis of specialized dyes and pigments. This compound is essential for manufacturers in the textile, ink, and specialty chemical industries seeking to produce high-performance colorants with excellent light and wash fastness properties.

Application

• Primary Intermediate for Acid Dyes: Key building block for synthesizing acid dyes used in wool, silk, and nylon fiber coloration.
• Specialty Ink Production: Used in the formulation of high-quality inks for packaging, security printing, and digital applications.
• Functional Dye Synthesis: Precursor for dyes with specific properties, such as those used in biological staining or as pH indicators.
• Research & Development: Serves as a standard or starting material in chemical R&D for novel chromophore development.
• Pigment Manufacturing: Can be complexed with metals to create lakes and pigments for plastics and coatings.

Basic Information

Product Name	4-[[4-(Diethylamino)-2-Hydroxyphenyl]Azo]-3-Hydroxy-2,7-Naphthalenedisulfonic Acid
CAS No.	91999-87-0
Molecular Formula	C20H21N3O8S2
Molecular Weight	495.52 g/mol
Synonyms	Acid Orange 116; C.I. 26410; 2,7-Naphthalenedisulfonic acid, 4-[[4-(diethylamino)-2-hydroxyphenyl]azo]-3-hydroxy-; 4-[(4-Diethylamino-2-hydroxyphenyl)azo]-3-hydroxy-2,7-naphthalenedisulfonic acid; 3-Hydroxy-4-[(2-hydroxy-4-diethylaminophenyl)azo]-2,7-naphthalenedisulfonic acid; Azo dye intermediate 91999-87-0; 4-[(4-Diethylamino-2-hydroxyphenyl)diazenyl]-3-hydroxynaphthalene-2,7-disulfonic acid
EINECS	Contact for details

Quality Control

Our production of 4-[[4-(Diethylamino)-2-Hydroxyphenyl]Azo]-3-Hydroxy-2,7-Naphthalenedisulfonic Acid adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure consistency and compliance with customer specifications. Certificates of Analysis (COA) detailing all critical parameters are provided and available upon request 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). Keep away from strong oxidizing agents. The compound is light-sensitive; prolonged exposure to light should be avoided to maintain product integrity.

Specification

Item	Specification
Appearance	Dark red to brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content	≤ 5.0%
Sulfated Ash	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Freely soluble

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