Description

2-Hydroxy-5-[[4-[(1-Hydroxy-5-Sodiosulfo-2-Naphthalenyl)Azo]-1-Naphthalenyl]Azo]Benzoic Acid Sodium Salt is a high-purity, water-soluble azo dye intermediate of significant commercial importance. This compound is valued for its ability to impart strong, vibrant colors and its role as a key precursor in the synthesis of complex dyes and pigments. It is primarily required by manufacturers in the textile, ink, and specialty chemical industries for producing high-performance colorants.

Application

• Primary Intermediate for Azo Dyes: Serves as a critical building block in the synthesis of acid dyes, direct dyes, and reactive dyes used for coloring wool, silk, nylon, and paper.
• Textile Industry: Used in the production of dyes for textile fibers, offering good wash and light fastness properties.
• Ink Manufacturing: Employed in the formulation of inks for packaging, printing, and writing instruments.
• Pigment Production: Acts as a precursor for lake pigments and other insoluble colorants used in plastics and coatings.
• Laboratory & Research: Utilized in chemical research and development for studying azo coupling reactions and developing new chromophores.
• Specialty Chemicals: Finds application in the synthesis of more complex, value-added dye molecules for niche markets.

Basic Information

Product Name	2-Hydroxy-5-[[4-[(1-Hydroxy-5-Sodiosulfo-2-Naphthalenyl)Azo]-1-Naphthalenyl]Azo]Benzoic Acid Sodium Salt
CAS No.	6406-50-4
Molecular Formula	C27H16N4Na2O8S
Molecular Weight	618.48 g/mol
Synonyms	Benzoic acid, 2-hydroxy-5-[[4-[(1-hydroxy-5-sulfo-2-naphthalenyl)azo]-1-naphthalenyl]azo]-, disodium salt; C.I. 27290; Acid Red 299; Disodium 5-[(E)-[4-[(E)-(1-hydroxy-5-sulphonatonaphthalen-2-yl)diazenyl]naphthalen-1-yl]diazenyl]-2-hydroxybenzoate; 2-Hydroxy-5-({4-[(1-hydroxy-5-sulfo-2-naphthyl)azo]-1-naphthyl}azo)benzoic acid disodium salt
EINECS	229-077-6

Quality Control

Our production of 2-Hydroxy-5-[[4-[(1-Hydroxy-5-Sodiosulfo-2-Naphthalenyl)Azo]-1-Naphthalenyl]Azo]Benzoic Acid Sodium Salt adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure consistency and meet precise customer specifications. Certificates of Analysis (COA) documenting all critical parameters are provided with each shipment.

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 (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 properties.

Specification

Item	Specification
Appearance	Dark red to brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content	≤ 5.0%
pH (1% Solution)	6.0 - 8.0
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.