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 chemical intermediate for manufacturers in the textile, ink, and specialty coatings industries seeking consistent color performance.

Application

• Azo Dye Synthesis: A key coupling agent for producing high-performance red and scarlet azo dyes.
• Textile Dyeing and Printing: Used in the formulation of dyes for coloring natural and synthetic fibers.
• Ink Manufacturing: Employed in the production of pigments for printing inks, including packaging and publication inks.
• Pigment Production: Serves as an intermediate in manufacturing organic pigments for plastics and coatings.
• Leather Finishing: Utilized in dye formulations for coloring leather goods.
• Paper Coloring: Applied in the production of dyes for specialty and decorative papers.
• Biological Staining: Can be used as a diazonium salt in specific histochemical staining applications.

Basic Information

Product Name	Fast Red Rc Salt
CAS No.	85252-22-8
Molecular Formula	C14H14ClN3O4S
Molecular Weight	355.80 g/mol
Synonyms	Fast Red RC Salt; Fast Red RC Base; 5-Chloro-2-methoxy-4-(methylsulfonamido)benzenediazonium Chloride Zinc Chloride Double Salt; 4-Amino-5-chloro-2-methoxy-N-methylbenzenesulfonamide Diazonium Salt; C.I. 37120; Azoic Diazo Component 10; Fast Red RC; Fast Red R Salt
EINECS	286-520-1

Quality Control

Our Fast Red Rc Salt is manufactured under strict quality control protocols to ensure batch-to-batch consistency and high purity. Each lot is tested against stringent in-house specifications, which typically include assay, identification, and impurity profile analysis. A Certificate of Analysis (COA) detailing the results is provided with every shipment to support your quality assurance processes.

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 (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent degradation from atmospheric moisture.

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 water, acetone; slightly soluble in ethanol

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