Description

2-Hydroxy-5-[[4-[(2-Hydroxy-6-Sodiosulfo-1-Naphthalenyl)Azo]-1-Naphthalenyl]Azo]Benzoic Acid Sodium Salt is a high-purity, water-soluble azo dye intermediate known for its excellent chromophore properties and consistent batch-to-batch performance. This compound is critical for manufacturers requiring precise color development and reliable chemical reactivity in advanced formulations. It is primarily utilized by the textile, ink, and specialty chemical industries for producing vivid, stable dyes and pigments.

Application

• Textile Dyeing: As a key intermediate for synthesizing acid and direct dyes for wool, silk, nylon, and paper.
• Ink Manufacturing: For the production of high-performance inks, including those for packaging and security printing.
• Pigment Synthesis: Used in the creation of organic pigments for plastics, coatings, and paints.
• Analytical Chemistry: Employed as a colorimetric reagent or indicator in specific laboratory assays.
• Research & Development: Serves as a building block for novel chromophores and functional materials in chemical research.
• Leather Coloring: Utilized in the formulation of dyes for the leather processing industry.

Basic Information

Product Name	2-Hydroxy-5-[[4-[(2-Hydroxy-6-Sodiosulfo-1-Naphthalenyl)Azo]-1-Naphthalenyl]Azo]Benzoic Acid Sodium Salt
CAS No.	6262-09-5
Molecular Formula	C27H16N4Na2O8S
Molecular Weight	610.48 g/mol
Synonyms	Benzoic acid, 2-hydroxy-5-[[4-[(2-hydroxy-6-sodiosulfo-1-naphthalenyl)azo]-1-naphthalenyl]azo]-, sodium salt; C.I. 27290; Acid Red 299; Sodium 5-[(E)-[4-[(E)-(2-hydroxy-6-sulfonatonaphthalen-1-yl)diazenyl]naphthalen-1-yl]diazenyl]-2-hydroxybenzoate; 2-Hydroxy-5-[(4-[(2-hydroxy-6-sulfo-1-naphthyl)azo]-1-naphthyl)azo]benzoic acid disodium salt; C.I. Acid Red 299; Azo dye intermediate 6262-09-5
EINECS	Contact for details

Quality Control

Our 2-Hydroxy-5-[[4-[(2-Hydroxy-6-Sodiosulfo-1-Naphthalenyl)Azo]-1-Naphthalenyl]Azo]Benzoic Acid Sodium Salt is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise specifications for dye intermediate applications. Certificates of Analysis (COA) documenting purity, heavy metal content, and other critical parameters are available upon request 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 room temperature (15-25°C). Keep away from incompatible materials. Due to its light-sensitive nature, prolonged exposure to direct 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%
Loss on Drying	≤ 5.0%
Sulfated Ash	Contact for details
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.