Description

Fast Blue B Salt is a high-purity diazonium salt primarily used as a versatile coupling agent in the synthesis of azo dyes and pigments. Its consistent reactivity and color strength make it a critical component for manufacturers requiring reliable and reproducible color development. This product is essential for industries involved in the production of inks, textile dyes, and specialized colorants for various substrates.

Application

• Primary coupling component for the synthesis of azo dyes and pigments.
• Key intermediate in the manufacturing of textile dyes for cotton, silk, and nylon.
• Used in the formulation of printing inks, including those for packaging and security applications.
• Production of colorants for paper and leather.
• Manufacture of biological stains and histochemical reagents for laboratory diagnostics.
• Potential use in the development of functional dyes for optical and electronic applications.

Basic Information

Product Name	Fast Blue B Salt
CAS No.	84633-94-3
Molecular Formula	C17H18ClN3O3
Molecular Weight	347.80 g/mol
Synonyms	Fast Blue B Base; 4-Benzoylamino-2,5-diethoxybenzenediazonium Chloride; 4-(Benzoylamino)-2,5-diethoxybenzenediazonium Chloride; C.I. 37235; Diazo Fast Blue B; Fast Blue Salt B; Variamine Blue B Salt
EINECS	Contact for details

Quality Control

Our Fast Blue B Salt is manufactured under strict quality management protocols to ensure batch-to-batch consistency and high purity. The product undergoes rigorous analytical testing, including HPLC for assay and identification by IR spectroscopy. A Certificate of Analysis (COA) detailing purity, moisture content, and other critical parameters is provided with every shipment to guarantee compliance with your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). This material is light-sensitive and easily oxidized; prolonged exposure to air and light should be avoided to maintain stability and performance.

Specification

Item	Specification
Appearance	Light beige to tan powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Moisture (KF)	≤ 2.0%
Solubility	Soluble in polar organic solvents
Heavy Metals	< 20 ppm

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