Description

Fast Red Al Salt is a high-purity diazonium salt primarily used as a coupling agent in the synthesis of azo dyes and pigments. This compound is valued for its ability to produce vivid, lightfast red and scarlet hues in various industrial applications. It is an essential intermediate for manufacturers in the textile, ink, and specialty coatings industries seeking consistent color performance and batch-to-batch reliability.

Application

• Azo Dye & Pigment Synthesis: A key coupling component for producing high-performance red and scarlet azo dyes and organic pigments.
• Textile Dyeing & Printing: Used in the formulation of dyes for coloring natural and synthetic fibers, including cotton, polyester, and nylon.
• Ink Manufacturing: Imparts intense color in the production of printing inks for packaging, publications, and textiles.
• Coatings & Paints: Serves as a colorant intermediate in industrial paints, automotive coatings, and architectural finishes.
• Plastics & Polymers: Employed in the mass coloration of plastics, resins, and synthetic materials.
• Biological Staining: Used in histology and cytology as a diazonium salt for specific staining techniques in laboratory diagnostics.
• Research & Development: Acts as a chemical intermediate in organic synthesis and material science research.

Basic Information

Product Name	Fast Red Al Salt
CAS No.	16048-40-1
Molecular Formula	C17H13N3O3·ZnCl2
Molecular Weight	Approx. 458.6 g/mol
Synonyms	Fast Red AL Salt; Fast Red AL; C.I. 37135; C.I. Azoic Diazo Component 36; Azoic Diazo No. 36; 5-Nitro-2-aminophenol Diazonium Salt, Zinc Chloride Double Salt; 2-Amino-5-nitrophenol Diazonium Salt Zinc Chloride Double Salt; Fast Red AL Base Diazonium Salt
EINECS	240-187-6

Quality Control

Our Fast Red Al Salt is manufactured under a strict quality management system to ensure high purity and consistent performance. Each batch is analyzed using advanced techniques including HPLC and titration to verify the assay and control impurity levels. A comprehensive Certificate of Analysis (COA) detailing purity, physical characteristics, and test results is provided with every shipment to guarantee compliance with your specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at a controlled room temperature (15-25°C). This material is strictly light-sensitive and easily oxidized; it must be protected from all light exposure and is best stored under an inert atmosphere for long-term stability. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Yellow to brown powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (Diazonium Content)	Min. 95%
Moisture Content (KF)	Max. 2.0%
Insoluble Matter	Max. 0.5%
Zinc Content	Conforms to theoretical

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