Description

Acid Red 94 is a synthetic, water-soluble azo dye known for its vibrant red color and good lightfastness. This high-purity colorant is essential for achieving consistent and reliable coloration in demanding industrial applications. It is primarily utilized by manufacturers in the textile, paper, and leather industries, as well as in the formulation of inks and specialty coatings where a stable red hue is required.

Application

• Textile Dyeing: Used for dyeing protein fibers like wool, silk, and nylon, as well as for coloring leather goods.
• Paper Coloring: Imparts a bright red color to various types of paper, including tissue, packaging, and specialty papers.
• Ink Formulation: A key pigment in the production of inks for writing instruments, stamp pads, and flexographic printing.
• Biological Staining: Employed as a histological stain in laboratory settings for microscopic analysis.
• Cosmetic Additive: Used in the formulation of certain cosmetic products, such as hair dyes and colorants, where approved.
• Specialty Coatings: Provides coloration for coatings and surface treatments where a specific red shade is needed.

Basic Information

Product Name	Acid Red 94
CAS No.	632-69-9
Molecular Formula	C20H11N2Na3O10S3
Molecular Weight	604.48 g/mol
Synonyms	Acid Red 94; Eosin Y; Eosin Yellowish; C.I. 45430; Bromoeosin; Eosin Yellowish Disodium Salt; Eosin Y Disodium; 2',4',5',7'-Tetrabromofluorescein Disodium Salt; Eosin Water Soluble
EINECS	211-199-1

Quality Control

Our Acid Red 94 is manufactured under strict quality management systems to ensure batch-to-batch consistency and high purity. The product is tested against stringent in-house specifications, which include parameters for color strength, hue, solubility, and impurity profiles. A Certificate of Analysis (COA) detailing the results of these quality tests is provided with every shipment to guarantee compliance with your 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). Keep away from incompatible materials and sources of ignition.

Specification

Item	Specification
Appearance	Red to brownish-red powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 85.0%
Loss on Drying	≤ 10.0%
Water Solubility	Completely soluble
pH (1% Solution)	7.0 - 9.0
Heavy Metals (as Pb)	≤ 20 ppm

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