Description

Fast Red Tr Salt Hemi(Zinc Chloride) is a diazonium salt complex used as a key coupling component in the synthesis of azo dyes and pigments. This compound is valued for its ability to produce vivid, lightfast red hues and its reactivity in diazotization and coupling reactions. It is primarily required by manufacturers in the textile, ink, and specialty chemical industries for creating high-performance colorants.

Application

• Azo Dye & Pigment Synthesis: As a critical intermediate for producing high-quality red and scarlet azo dyes and organic pigments.
• Textile Printing and Dyeing: For coloring natural and synthetic fibers, offering good wash and light fastness.
• Ink Manufacturing: Used in the formulation of printing inks for packaging, publications, and security applications.
• Biological Staining: Employed in histology and cytology as a coupling salt in enzyme histochemistry (e.g., for alkaline phosphatase detection).
• Liquid Crystal Display (LCD) Color Filters: As a photochemical component in the production of color filters for electronic displays.
• Research & Development: Serves as a reagent in organic synthesis and chemical research for developing new chromogenic compounds.

Basic Information

Product Name	Fast Red Tr Salt Hemi(Zinc Chloride)
CAS No.	89453-69-0
Molecular Formula	C₁₇H₁₈ClN₃O₃S • ½ZnCl₂
Molecular Weight	Contact for details
Synonyms	Fast Red TR Salt; Fast Red TR Zinc Chloride Salt; 5-Chloro-2-toluidine Diazonium Salt, Zinc Chloride Double Salt; 4-Chloro-2-methylbenzenediazonium Zinc Chloride Salt; Fast Red TR Hemi(Zinc Chloride); Azoic Diazo Component 11; C.I. 37085; Fast Red TR Salt (Zinc Chloride Complex)
EINECS	Contact for details

Quality Control

Our Fast Red Tr Salt Hemi(Zinc Chloride) is produced under strict quality management protocols. Each batch undergoes comprehensive analytical testing to ensure consistent purity, reactivity, and color strength. A Certificate of Analysis (COA) detailing assay, impurity profile, and performance characteristics is provided with every shipment to guarantee it meets your specific application requirements.

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). Due to its hygroscopic nature, the container must be kept tightly sealed to prevent moisture absorption, which can affect reactivity and stability.

Specification

Item	Specification
Appearance	Light yellow to beige powder
Identification (IR)	Conforms to standard
Assay (Diazotizable Amine)	≥ 95.0%
Moisture Content	≤ 5.0%
Solubility	Soluble in water, slightly soluble in ethanol
Heavy Metals (as Pb)	≤ 20 ppm

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