Description

Acid Red 154 is a synthetic, water-soluble azo dye belonging to the acid dye class, widely recognized by its CAS number 6507-79-5. It is valued for its bright, vivid red color and strong affinity for protein-based and polyamide fibers, providing excellent colorfastness properties. This dye is essential for manufacturers in the textile, leather, and paper industries seeking reliable and consistent coloration for their products.

Application

• Textile Dyeing: Primary application for dyeing wool, silk, and nylon fibers, offering good leveling and wash-fastness.
• Leather Finishing: Used for coloring leather goods, providing uniform and deep shades with good lightfastness.
• Paper Coloring: Employed in the production of colored papers, tissues, and specialty packaging materials.
• Ink Formulation: A component in the manufacture of inks for markers, stamp pads, and other aqueous-based systems.
• Biological Staining: Potential use as a histological stain in laboratory settings for microscopic analysis.
• Cosmetics (where approved): Used in certain cosmetic formulations such as hair dyes and soaps, subject to regional regulatory compliance.

Basic Information

Product Name	Acid Red 154
CAS No.	6507-79-5
Molecular Formula	C22H14N4Na2O7S2
Molecular Weight	556.48 g/mol
Synonyms	Acid Red 154; C.I. 24800; Acid Leather Red G; Naphthalene Scarlet 4R; Acid Fast Red EG; Acid Brilliant Red 3B; Lissamine Red 2G; Acid Red 2G; Azo Rubine S; Acid Leather Red 2G
EINECS	229-409-3

Quality Control

Our Acid Red 154 is manufactured under a stringent quality management system to ensure batch-to-batch consistency and performance. Each lot is tested against rigorous in-house specifications for critical parameters including color strength, shade, solubility, and impurity profile. A comprehensive Certificate of Analysis (COA) detailing purity, physical properties, and conformance is provided with every shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after use to prevent absorption of atmospheric moisture, which can affect product performance and handling.

Specification

Item	Specification
Appearance	Red to dark red powder
Identification (IR)	Conforms to standard
Assay (HPLC)	Min. 95%
Color Strength	100 ± 5%
Moisture Content	Max. 5.0%
Water Solubility	Conforms
Ash Content	Max. 1.0%
Heavy Metals (as Pb)	Max. 20 ppm

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