Description

5-(4-Diethylamino-2-Hydroxyphenylazo)-4-Hydroxynaphthalene-2,7-Disulfonic Acid Sodium Salt is a high-purity, water-soluble azo dye intermediate of significant commercial importance. Its core value lies in its ability to impart a vibrant color and its utility as a key precursor in the synthesis of specialized dyes and pigments. This compound is essential for manufacturers in the textile, ink, and specialty chemical industries who require consistent quality and reliable supply for their production processes.

Application

• Primary intermediate for the synthesis of acid dyes and direct dyes used in textile coloration.
• Key precursor in the manufacturing of specialty pigments for inks, coatings, and plastics.
• Used in the development of biological stains and histochemical dyes for laboratory and diagnostic applications.
• Potential use as a colorant or intermediate in the production of sensitizers for photographic and imaging technologies.
• Employed in research and development for novel functional dyes with specific optical or electronic properties.
• Acts as a chemical building block for azo coupling reactions in fine chemical synthesis.

Basic Information

Item	Details
Product Name	5-(4-Diethylamino-2-Hydroxyphenylazo)-4-Hydroxynaphthalene-2,7-Disulfonic Acid Sodium Salt
CAS No.	3627-04-1
Molecular Formula	C20H19N3Na2O8S2
Molecular Weight	539.48 g/mol
Synonyms	Acid Orange 63; C.I. 22870; 5-[(4-Diethylamino-2-hydroxyphenyl)azo]-4-hydroxy-2,7-naphthalenedisulfonic acid disodium salt; 2,7-Naphthalenedisulfonic acid, 5-[(4-(diethylamino)-2-hydroxyphenyl)azo]-4-hydroxy-, disodium salt; Azo Dye Intermediate 3627-04-1; 4-Hydroxy-5-[(2-hydroxy-4-(diethylamino)phenyl)azo]-2,7-naphthalenedisulfonic acid disodium salt
EINECS	222-851-8

Quality Control

Our production of 5-(4-Diethylamino-2-Hydroxyphenylazo)-4-Hydroxynaphthalene-2,7-Disulfonic Acid Sodium Salt adheres to stringent quality management protocols to ensure batch-to-batch consistency and purity. Each lot is subjected to comprehensive analytical testing, including HPLC for assay and impurity profiling. A Certificate of Analysis (COA) detailing identity, purity, and other critical parameters is provided with every shipment to support your quality assurance requirements.

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) and light-sensitive; therefore, containers must be kept sealed when not in use to prevent degradation and absorption of moisture.

Specification

Item	Specification
Appearance	Dark red to brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm
Water Solubility	Freely soluble

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