Description

Fast Red Gl 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, lightfast red hues in various industrial applications. It is an essential chemical intermediate for manufacturers in the textile, leather, ink, and specialty chemical industries seeking consistent color performance.

Application

• Primary coupling agent for the synthesis of azo dyes and pigments, particularly for red shades.
• Key intermediate in the production of textile dyes for cotton, silk, and synthetic fibers.
• Manufacturing of leather dyes and finishing agents.
• Production of printing inks for packaging and publications.
• Used in the formulation of paper colorants and specialty coatings.
• Research and development of novel colorimetric indicators and analytical reagents.
• Potential use in the synthesis of functional polymers and advanced materials.

Basic Information

Product Name	Fast Red Gl Salt
CAS No.	85223-03-6
Molecular Formula	C12H10ClN3O3S
Molecular Weight	311.74 g/mol
Synonyms	Fast Red GL Salt; Fast Red GL Base; 2-Methoxy-5-chlorobenzenediazonium 4-methylbenzenesulfonate; 5-Chloro-2-methoxybenzenediazonium Tosylate; 5-Chloro-o-anisidine Diazonium Salt; C.I. 37120; Diazonium, (5-chloro-2-methoxyphenyl)-, 4-methylbenzenesulfonate
EINECS	286-410-3

Quality Control

Our Fast Red Gl Salt is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure it meets precise chemical and physical specifications. A Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with each shipment to guarantee traceability and consistency for your production processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at 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 the product.

Specification

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

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