Description

Fast Scarlet R Salt is a diazonium salt primarily used as a key coupling component in the synthesis of azo dyes and pigments. This compound is valued for its ability to produce vivid, lightfast red and scarlet hues in various industrial applications. It is essential for manufacturers in the textile, leather, ink, and specialty chemical industries seeking consistent and high-performance colorants.

Application

• Primary coupling agent for the production of azo dyes and pigments, particularly for red and scarlet shades.
• Coloration of textile fibers including cotton, wool, and synthetic blends.
• Dyeing and finishing of leather goods.
• Manufacturing of printing inks for packaging and publications.
• Production of paper colorants and specialty coatings.
• Intermediate in the synthesis of specialty chemicals and functional colorants.
• Research and development of novel photographic and imaging materials.

Basic Information

Product Name	Fast Scarlet R Salt
CAS No.	61919-18-4
Molecular Formula	C12H10ClN3O3S
Molecular Weight	311.74 g/mol
Synonyms	4-Chloro-2-methylbenzenediazonium-5-sulfonate; 2-Methyl-5-sulfo-4-chlorobenzenediazonium salt; Fast Scarlet Salt R; C.I. Azoic Diazo Component 12; Azoic Diazo No. 12; Scarlet Base R Salt; Fast Red R Salt; 4-Chloro-o-toluidine-5-sulfonic acid diazonium salt
EINECS	Contact for details

Quality Control

Our Fast Scarlet R Salt is manufactured under strict process controls to ensure batch-to-batch consistency and high purity. The product undergoes rigorous quality testing, including assay, identification, and impurity profiling, to meet industry specifications. Certificates of Analysis (COA) documenting all critical parameters are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); keep the original container tightly sealed to prevent absorption of atmospheric moisture. Keep away from heat, sparks, and open flame.

Specification

Item	Specification
Appearance	Light beige to tan powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 95.0%
Moisture (KF)	≤ 5.0%
Insoluble Matter	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

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