Description

Mordant Blue 18 is a synthetic, water-soluble dye belonging to the mordant dye class, identified by CAS NO 6844-73-1. Its primary value lies in forming stable, colored complexes with metal ions, resulting in excellent colorfastness properties on various substrates. This dye is essential for industrial applications requiring durable coloration, particularly in the textile and leather industries for dyeing wool, silk, and other protein fibers.

Application

• Textile Dyeing: Primary application for dyeing wool, silk, and nylon, offering good wash and light fastness when used with appropriate metal mordants like chromium.
• Leather Coloring: Used in the tanning and finishing processes to impart durable and vibrant colors to leather goods.
• Biological Staining: Employed in histology and microscopy as a staining agent for tissue samples, often in combination with other dyes.
• Ink Formulation: A component in the manufacture of specialized inks for industrial marking or artistic purposes.
• Paper Coloring: Used for tinting specialty papers where specific color properties are required.
• Research & Development: Serves as a chemical intermediate or reference standard in analytical and synthetic chemistry laboratories.

Basic Information

Product Name	Mordant Blue 18
CAS No.	6844-73-1
Molecular Formula	C₁₇H₁₄N₂O₅S·Na
Molecular Weight	381.36 g/mol
Synonyms	Acid Chrome Blue K; Alizarin Cyanine Green G; Aizen Chrome Blue K; Calcomine Blue K; Chrome Blue K; C.I. Mordant Blue 18; C.I. 43815; Eriochrome Cyanine Green G; Mitsui Chrome Blue K; Solochrome Cyanine Green G
EINECS	229-931-3

Quality Control

Our Mordant Blue 18 is manufactured under a stringent quality management system. Each batch is tested to ensure consistent purity, color strength, and application performance. Key parameters include assay (dye content), shade, solubility, and fastness properties. A Certificate of Analysis (COA) detailing these specifications is provided with every shipment to guarantee compliance with your technical 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). This product is hygroscopic (moisture-sensitive); keep the container tightly sealed when not in use to prevent absorption of atmospheric moisture, which may affect performance.

Specification

Item	Specification
Appearance	Dark Blue to Black Powder
Identification (IR)	Conforms to Standard
Assay (Dye Content)	Min. 95%
Moisture Content	Max. 5.0%
Water Solubility	Conforms
Shade	Conforms to Standard
Ash Content	Max. 1.0%

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