Description

Fast Red B Salt Zinc Sulfate is a specialized 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, lightfast red hues with excellent tinctorial strength and substrate adhesion. It is an essential chemical intermediate for manufacturers in the textile, leather, ink, and specialty coatings industries seeking to develop high-performance colorants.

Application

• Azo Dye Synthesis: A key coupling agent for producing high-quality red and scarlet azo dyes for textiles and fibers.
• Pigment Manufacturing: Used in the creation of organic pigments for inks, paints, and industrial coatings requiring color stability.
• Leather Coloring: Employed in dye formulations for achieving deep, uniform coloration on leather goods.
• Paper Dyeing: A component in specialty dyes for coloring paper and paperboard products.
• Biological Staining: Can be utilized in histology and microbiology as a staining agent or intermediate for diagnostic reagents.
• Chemical Research: Serves as a valuable reagent in organic synthesis and materials science research for introducing diazonium functional groups.

Basic Information

Product Name	Fast Red B Salt Zinc Sulfate
CAS No.	120-17-2
Molecular Formula	C17H13N3O3S · 1/2ZnSO4
Molecular Weight	Contact for details
Synonyms	Fast Red B Salt; Fast Red B Base Zinc Double Salt; 5-Nitro-2-aminophenol Diazonium Salt Zinc Sulfate Double Salt; 2-Amino-5-nitrophenol Diazonium Salt Zinc Sulfate; C.I. 37125; Azoic Diazo Component 5; Fast Red Salt B; Diazo Fast Red B
EINECS	Contact for details

Quality Control

Our Fast Red B Salt Zinc Sulfate is produced under stringent quality management protocols to ensure batch-to-batch consistency and performance reliability. Each lot is tested for critical parameters including purity, strength, and solubility to meet the exacting standards of the dye and pigment industries. A comprehensive Certificate of Analysis (COA) documenting identity, assay, and impurity profiles is provided with every shipment.

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 hygroscopic (moisture-sensitive) and light-sensitive; containers must be kept tightly sealed after opening to minimize exposure to atmospheric moisture and light, which can degrade product performance.

Specification

Item	Specification
Appearance	Light yellow to beige powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (Diazotizable Amine)	≥ 95.0%
Solubility	Soluble in water, slightly soluble in organic solvents
Moisture Content (KF)	≤ 3.0%
Heavy Metals (as Pb)	≤ 20 ppm

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