Description

Disodium 4-Hydroxy-3-[[2-[4-(tert-Pentyl)Phenoxy]Phenyl]Azo]Naphthalene-2,7-Disulphonate is a high-purity, synthetic azo dye intermediate known for its excellent chromophore properties and stability. This compound is critical for manufacturers requiring precise color development and consistent batch-to-batch performance in demanding applications. It is primarily utilized by producers of industrial dyes, pigments, and specialty colorants for textiles, inks, and plastics.

Application

• Primary Intermediate for Azo Dyes & Pigments: Serves as a key building block in the synthesis of high-performance orange to red azo dyes and organic pigments.
• Textile Dyeing: Used in the manufacturing of dyes for coloring synthetic and natural fibers, offering good light and wash fastness.
• Ink Formulations: Incorporated into the production of industrial and printing inks, providing vibrant and stable coloration.
• Plastic and Polymer Coloring: Acts as a colorant intermediate for masterbatches and compounded plastics, ensuring uniform dispersion and heat stability.
• Specialty Chemical Synthesis: Employed as a precursor in the research and development of novel functional dyes and photoactive materials.
• Analytical Reagents: Can be used in the formulation of specific chemical indicators and stains for laboratory use.

Basic Information

Product Name	Disodium 4-Hydroxy-3-[[2-[4-(tert-Pentyl)Phenoxy]Phenyl]Azo]Naphthalene-2,7-Disulphonate
CAS No.	94158-04-0
Molecular Formula	C33H28N2Na2O9S2
Molecular Weight	714.68 g/mol
Synonyms	Disodium 4-hydroxy-3-{[2-(4-tert-pentylphenoxy)phenyl]diazenyl}naphthalene-2,7-disulfonate; C.I. Acid Orange 156; Acid Orange 156; Azo dye intermediate 94158-04-0; 4-Hydroxy-3-[[2-[4-(1,1-dimethylpropyl)phenoxy]phenyl]azo]-2,7-naphthalenedisulfonic acid disodium salt; 2,7-Naphthalenedisulfonic acid, 4-hydroxy-3-[[2-[4-(1,1-dimethylpropyl)phenoxy]phenyl]azo]-, disodium salt; Tert-pentyl azo naphthalene disulfonate
EINECS	Contact for details

Quality Control

Our Disodium 4-Hydroxy-3-[[2-[4-(tert-Pentyl)Phenoxy]Phenyl]Azo]Naphthalene-2,7-Disulphonate 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. A comprehensive Certificate of Analysis (COA) detailing purity, impurity profile, and physical characteristics is provided with each shipment to guarantee consistency and reliability for your production 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). This material is hygroscopic (moisture-sensitive) and light-sensitive; containers must be kept tightly sealed when not in use to prevent degradation and moisture absorption.

Specification

Item	Specification
Appearance	Orange to red powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Moisture (KF Titration)	≤ 5.0%
Solubility (in water)	Freely soluble
Heavy Metals (as Pb)	≤ 20 ppm
Sulfated Ash	≤ 1.0%

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