Description

Mordant Red 19 CAS NO 1934-24-3 is a synthetic azo dye belonging to the mordant dye class, valued for its ability to form stable, colorfast complexes with metal ions. This property is critical for achieving vibrant and durable coloration on substrates like textiles, leather, and paper. It is an essential chemical for manufacturers in the dyeing and finishing industries who require consistent, high-quality pigments for their production processes.

Application

• Textile Dyeing: Primarily used for dyeing wool, silk, and nylon, where it forms stable complexes with chromium or aluminum mordants to produce rich, wash-fast red shades.
• Leather Coloring: Employed in the tanning and finishing industry to impart durable and uniform color to leather goods.
• Paper Staining: Used for the coloration of specialty papers, including decorative and packaging materials.
• Biological Staining: Can be utilized as a histological stain in laboratory settings for microscopic analysis.
• Ink Formulation: A component in the manufacture of certain types of inks requiring good lightfastness.
• Wood Staining: Applied for coloring wood, providing a penetrated and lasting finish.

Basic Information

Product Name	Mordant Red 19
CAS No.	1934-24-3
Molecular Formula	C20H13N2NaO5S
Molecular Weight	416.38 g/mol
Synonyms	Acid Alizarin Red GG; Alizarin Red GG; Alizarin Red GGN; Alizarin Red S; Alizarin Red WG; C.I. 18735; C.I. Mordant Red 19; Chromotrope FB; Eriochrome Red B; Mordant Red 19 sodium salt; Sodium 3,4-dihydroxy-2-[(2-hydroxy-1-naphthyl)azo]naphthalene-1-sulfonate
EINECS	217-710-3

Quality Control

Our Mordant Red 19 is manufactured under a stringent quality management system. Every batch undergoes comprehensive analytical testing, including assay, shade strength, and impurity profiling, to ensure it meets precise customer specifications and industry standards. A Certificate of Analysis (COA) detailing purity, physical properties, and performance metrics is provided with each shipment.

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). Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Reddish-brown powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 95.0%
Moisture Content	≤ 5.0%
Ash Content	≤ 1.0%
Water Solubility	Conforms
Shade & Strength	Match to reference standard

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