Description

Acid Red 359 is a synthetic organic dye belonging to the azo dye class, valued for its bright and stable red color. It is a critical component for achieving consistent, high-quality coloration in demanding industrial applications. This product is essential for manufacturers in the textile, leather, and specialty ink sectors seeking reliable and effective red dye solutions.

Application

• Textile Dyeing: Primarily used for dyeing nylon, silk, and wool fibers, providing excellent color fastness and levelness.
• Leather Finishing: Applied in the dyeing of leather goods, such as apparel, footwear, and accessories, to produce vibrant red shades.
• Ink Manufacturing: Serves as a colorant in the formulation of specialty inks, including inks for ballpoint pens and other writing instruments.
• Paper Staining: Used for the surface coloring of specialty papers and paper products requiring a red hue.
• Biological Staining: May be employed as a histological stain in laboratory settings for microscopic analysis.
• Plastics and Polymers: Can be used for the mass coloration of certain plastics where compatibility is confirmed.

Basic Information

Product Name	Acid Red 359
CAS No.	61814-65-1
Molecular Formula	C24H20N4Na2O8S2
Molecular Weight	606.55 g/mol
Synonyms	Acid Red 359; C.I. 18280; Acid Leather Red G; Nylosan Red F-3GL; Acid Leather Red G (C.I. 18280); 7-Hydroxy-8-[(E)-2-(4-nitrophenyl)diazen-1-yl]-1,3-naphthalenedisulfonic acid disodium salt; 1,3-Naphthalenedisulfonic acid, 7-hydroxy-8-[(2-(4-nitrophenyl)diazenyl]-, disodium salt
EINECS	Contact for details

Quality Control

Our Acid Red 359 is manufactured under a strict quality management system. Each batch is tested to ensure it meets high-purity standards and consistent performance characteristics for color strength and solubility. A Certificate of Analysis (COA) detailing key parameters such as assay, shade, and impurity profile is provided with every shipment to guarantee supply reliability and quality assurance.

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	Red to dark red powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 95.0%
Color Strength	100 ± 3% (vs. Standard)
Moisture Content	≤ 5.0%
Water Solubility	Conforms
Ash Content	≤ 1.0%

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