Description

Fast Violet B Salt is a diazonium salt primarily used as a coupling component in the synthesis of azo dyes and pigments. This compound is valued for its ability to produce vibrant violet and blue shades with good fastness properties. It is a critical intermediate for manufacturers in the textile, leather, ink, and specialty paper industries seeking consistent and high-purity colorants.

Application

• Textile Dyeing and Printing: A key intermediate for producing azo dyes used to color natural and synthetic fibers, including cotton, wool, and nylon.
• Leather Finishing: Employed in the synthesis of pigments and dyes for coloring leather goods, providing rich, durable colors.
• Ink Manufacturing: Used to create violet and blue pigments for various printing inks, including packaging and security inks.
• Paper Coloring: Acts as a coupling agent in the production of dyes for specialty and decorative papers.
• Biological Staining: Serves as a histochemical reagent in laboratory settings for tissue staining and diagnostic applications.
• Pigment Production: A fundamental building block in the manufacture of organic pigments for plastics, paints, and coatings.

Basic Information

Product Name	Fast Violet B Salt
CAS No.	14726-28-4
Molecular Formula	C13H12ClN3O3
Molecular Weight	293.71 g/mol
Synonyms	Fast Violet B Base; Variamine Blue B Salt; 4-Methoxy-2-nitrobenzenediazonium chloride; 4-Methoxy-2-nitroaniline diazonium salt; Diazo Fast Blue VB; C.I. 37175; Azoic Diazo Component 41; Fast Blue VB Salt
EINECS	Contact for details

Quality Control

Our Fast Violet B Salt is manufactured under strict quality control protocols to ensure batch-to-batch consistency and high purity. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing key parameters such as assay, impurity profile, and solubility. Our quality system is designed to meet the stringent requirements of industrial dye and pigment synthesis.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) and strictly light-sensitive nature, the container must be kept sealed in original packaging and protected from all light exposure to maintain stability and prevent decomposition.

Specification

Item	Specification
Appearance	Light beige to yellowish powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Moisture Content (KF)	≤ 2.0%
Solubility (in water)	Clear, yellow solution
Heavy Metals (as Pb)	≤ 20 ppm

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