Description

Fast Blue RR Salt is a stabilized diazonium salt primarily used as a high-performance coupling agent in the synthesis of azo dyes and pigments. This compound is critical for producing vivid, lightfast, and wash-fast colors, particularly in the blue to violet spectrum. It is an essential intermediate for manufacturers in the textile, leather, ink, and specialty chemical industries seeking consistent and reliable colorant production.

Application

• Primary coupling component for the synthesis of azo dyes and pigments used in textile dyeing and printing.
• Key intermediate in manufacturing colorants for leather finishing and coatings.
• Used in the production of inks, including those for packaging and specialty printing applications.
• Employed in the synthesis of functional dyes for research and analytical chemistry.
• Acts as a color-forming agent in specific detection and diagnostic kits within life sciences.
• Potential use as a reagent in histological staining for microscopy.

Basic Information

Product Name	Fast Blue RR Salt
CAS No.	27766-45-6
Molecular Formula	C14H14ClN3O3·ZnCl2
Molecular Weight	460.47 g/mol (as double salt)
Synonyms	Fast Blue RR Salt; 4-Benzoylamino-2,5-diethoxybenzenediazonium Chloride Zinc Chloride Double Salt; Diazo Fast Blue RR; C.I. 37155; Azoic Diazo Component 20; Fast Blue RR Base; 2,5-Diethoxy-4-(phenylcarbonylamino)benzenediazonium Chloride Zinc Chloride
EINECS	Contact for details

Quality Control

Our Fast Blue RR Salt is manufactured under strict quality management protocols. Each batch undergoes comprehensive analytical testing to ensure high purity and consistent performance. We provide detailed Certificates of Analysis (COA) upon request, documenting key parameters such as assay, strength, and impurity profiles to support your quality assurance 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 prevent degradation and moisture absorption.

Specification

Item	Specification
Appearance	Light beige to tan powder
Identification (IR)	Conforms to structure
Assay (Diazotizable Amine)	≥ 95.0%
Solubility	Soluble in water, acetone
Moisture Content	≤ 2.0%

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