Description

Acid Red 26 is a synthetic azo dye known for its vibrant red color and good solubility in water. This dye matters for its excellent tinctorial strength and versatility in coloring a wide range of substrates, providing a cost-effective solution for achieving consistent, bright red hues. It is primarily needed by manufacturers in the textile, paper, and leather industries for dyeing and printing applications, where color fastness and batch-to-batch consistency are critical.

Application

• Textile Dyeing: Used for dyeing natural and synthetic fibers, including wool, silk, and nylon, to produce red shades.
• Leather Finishing: Applied in the dyeing of leather goods such as footwear, bags, and upholstery.
• Paper Coloring: Employed in the manufacture of colored papers, tissues, and specialty packaging.
• Ink Formulation: Serves as a colorant in the production of inks for various printing processes.
• Biological Staining: Used in histology and microscopy as a staining agent for tissue samples (specific grades).
• Industrial Coatings: Incorporated into coatings and paints where a red pigment is required.

Basic Information

Product Name	Acid Red 26
CAS No.	3761-53-3
Molecular Formula	C18H13N3Na2O7S2
Molecular Weight	493.42 g/mol
Synonyms	Acid Red 26; C.I. 16150; Food Red 7; Amaranth; Azorubin S; Acid Amaranth; C.I. Acid Red 26; FD&C Red No. 2 (historical); E123 (food additive code)
EINECS	223-178-3

Quality Control

Our Acid Red 26 is produced under a strict quality management system. Each batch undergoes rigorous testing to ensure it meets precise specifications for color strength, purity, and solubility. Certificates of Analysis (COA) detailing parameters such as assay, heavy metal content, and identification 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, which can affect product performance.

Specification

Item	Specification
Appearance	Red to dark red powder
Identification (IR)	Conforms to standard
Assay (HPLC)	Min. 85%
Color Strength	100 ± 5% (vs. Standard)
Moisture Content	Max. 5.0%
Water Solubility	Clear solution at 1%
Heavy Metals (as Pb)	Max. 20 ppm
Ash Content	Max. 1.0%

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