Description

Fast Red Rc 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 and scarlet shades in various materials. It is an essential intermediate for manufacturers in the textile, ink, and specialty coatings industries requiring high-performance colorants.

Application

• Primary coupling agent for the production of azo pigments and dyes.
• Manufacture of colorants for textile printing and dyeing processes.
• Key intermediate in the synthesis of pigments for inks, including printing and packaging inks.
• Production of colorants for industrial coatings and paints.
• Used in the coloration of plastics and synthetic fibers.
• Potential use in the preparation of biological stains and indicators for laboratory applications.

Basic Information

Product Name	Fast Red Rc Salt
CAS No.	68025-25-2
Molecular Formula	C14H14ClN3O4S
Molecular Weight	355.80 g/mol
Synonyms	Fast Red RC Salt; 5-Chloro-2-methoxy-4-methylbenzenesulfonic acid diazonium salt; 2-Methoxy-5-methyl-4-chlorobenzenesulfonic acid diazonium salt; Fast Red RC Base; Azoic Diazo Component 11; C.I. 37050; Diazo Fast Red RC; Red RC Salt
EINECS	Contact for details

Quality Control

Our Fast Red Rc Salt is manufactured under strict quality protocols to ensure batch-to-batch consistency and performance. Each lot is tested to confirm identity, purity, and suitability for its intended industrial applications. A Certificate of Analysis (COA) detailing specific test results is provided with every shipment.

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 to exclude moisture and light exposure to maintain stability.

Specification

Item	Specification
Appearance	Light beige to tan powder
Identification (IR)	Conforms to structure
Assay (Diazotizable Amine)	Min. 95%
Moisture Content	Max. 2.0%
Insoluble Matter	Max. 0.5%
Compatibility Test	Passes standard coupling test

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