Description

Acid Red 8 is a synthetic azo dye known for its vibrant red color. This product is valued for its strong tinctorial strength and good solubility in water, making it a versatile and effective coloring agent. It is primarily used by manufacturers in the textile, paper, and leather industries for dyeing and printing applications.

Application

• Textile Dyeing: Used for coloring natural and synthetic fibers, including cotton, wool, and nylon.
• Paper Coloring: Imparts a stable red hue to various types of paper and paperboard products.
• Leather Finishing: Applied in the dyeing of leather goods to achieve consistent and durable red shades.
• Ink Formulation: Serves as a colorant in the production of inks for specific printing applications.
• Biological Staining: May be utilized as a histological stain in laboratory settings for microscopic analysis.
• Specialty Coatings: Incorporated into coatings and paints where a specific red pigment is required.

Basic Information

Product Name	Acid Red 8
CAS No.	4787-93-3
Molecular Formula	C20H12N2Na2O7S2
Molecular Weight	502.42 g/mol
Synonyms	Acid Red 8; C.I. 15575; Acid Red 8, disodium salt; 4-Hydroxy-3-[(2-methoxy-5-methyl-4-sulfophenyl)azo]-1-naphthalenesulfonic acid disodium salt; 1-Naphthalenesulfonic acid, 4-hydroxy-3-[(2-methoxy-5-methyl-4-sulfophenyl)azo]-, disodium salt; Naphthalene Red; Amido Naphthol Red G; Lissamine Red 2G
EINECS	225-326-7

Quality Control

Our Acid Red 8 is manufactured under a strict quality management system. Each batch undergoes rigorous testing for key parameters including color strength, purity, solubility, and heavy metal content to ensure it meets the high standards required for industrial applications. Certificates of Analysis (COA) 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, and well-ventilated area at room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Red to dark red powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 95.0%
Color Strength	100 ± 5%
Moisture Content	≤ 5.0%
Water Solubility	Clear solution
Ash Content	≤ 1.0%
Heavy Metals (as Pb)	≤ 20 ppm

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