Description

Acid Red 13 is a synthetic anionic dye belonging to the azo chemical class, widely recognized for its vibrant red color and good solubility in water. This dye is valued for its strong tinctorial strength and compatibility with various substrates, making it a reliable choice for industrial coloring applications. It is primarily utilized in the textile, paper, and leather industries for dyeing and printing processes.

Application

• Textile Dyeing: Used for coloring nylon, silk, wool, and other protein-based fibers.
• Leather Finishing: Applied in the dyeing of leather goods to achieve consistent and durable red shades.
• Paper Coloring: Employed in the production of colored papers, tissues, and specialty packaging.
• Ink Formulation: A component in the manufacture of inks for stamp pads, ballpoint pens, and other writing instruments.
• Biological Staining: Used in histology and microscopy as a stain for biological tissues.
• Detergent & Soap: Incorporated to color household and industrial cleaning products.

Basic Information

Product Name	Acid Red 13
CAS No.	6039-95-8
Molecular Formula	C20H12N2Na2O7S2
Molecular Weight	502.42 g/mol
Synonyms	Acid Red 13; C.I. 16045; Food Red 10; Amaranth; Azorubin S; Acid Bordeaux; C.I. Acid Red 13; FD&C Red No. 2 (historical); E123 (Food additive code)
EINECS	227-921-5

Quality Control

Our Acid Red 13 is manufactured under a stringent quality management system. Each batch is tested to ensure it meets specifications for color strength, purity, and solubility. Relevant standards for industrial dyes are followed, and a Certificate of Analysis (COA) detailing assay, impurity profile, and physical properties is provided with every shipment.

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
Assay (HPLC)	Min. 85%
Moisture Content	Max. 5.0%
Water Solubility	Freely soluble
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.