Description

Fast Red Rbe Base is a diazo component used in the synthesis of azo pigments and dyes. This compound is valued for its ability to produce vibrant, lightfast red shades with excellent application properties. It is a critical intermediate for manufacturers in the pigments, inks, coatings, and plastics industries seeking high-performance colorants.

Application

Fast Red Rbe Base serves as a key coupling agent in the production of various high-performance colorants. Its primary applications include:

• Azo Pigment Synthesis: As a diazonium salt precursor for manufacturing high-grade organic red pigments.
• Printing Inks: Production of pigments for industrial and packaging inks requiring strong color strength and stability.
• Coatings and Paints: Formulation of pigments for automotive, industrial, and decorative coatings with good weatherfastness.
• Plastics and Masterbatches: Coloring of polymers and engineering plastics where heat stability is crucial.
• Textile Dyes: Intermediate in the synthesis of specific dyes for synthetic fibers.
• Specialty Colorants: Used in the production of colorants for specialty applications requiring specific hue and performance characteristics.

Basic Information

Product Name	Fast Red Rbe Base
CAS No.	2580-80-5
Molecular Formula	C₁₇H₁₃ClN₂O₃
Molecular Weight	328.75 g/mol
Synonyms	Fast Red RBE Base; 5-Chloro-2-toluidino-4-sulfobenzoic Acid; 4-[(5-Chloro-2-methylphenyl)amino]-4-oxo-3-sulfobenzoic Acid; 5-Chloro-2-methyl-4'-sulfobenzanilide; C.I. Azoic Diazo Component 8; Azoic Diazo Component 8; Fast Red Base RBE; C.I. 37135
EINECS	219-949-5

Quality Control

Our Fast Red Rbe Base is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure consistent purity, color value, and performance. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, and physical specifications is provided with each 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 product performance.

Specification

Item	Specification
Appearance	Light beige to brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Moisture (KF)	≤ 1.0%
Ash Content	≤ 0.5%
Solubility	Soluble in alkaline aqueous solutions

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