Description

Acid Yellow 17 is a synthetic anionic azo dye known for its bright, clear yellow hue and good water solubility. This product is valued for its strong tinctorial strength and compatibility with a variety of substrates, making it a versatile and cost-effective coloring agent. It is primarily used by manufacturers in the textile, paper, leather, and ink industries for dyeing and printing applications.

Application

• Textile Dyeing: Used for dyeing natural and synthetic fibers, particularly wool, silk, and nylon, producing vibrant yellow shades.
• Leather Finishing: Applied in the coloring of leather goods, providing uniform and durable coloration.
• Paper Coloring: Employed in the manufacture of colored papers, tissues, and specialty packaging materials.
• Ink Formulation: A key component in the production of writing inks, stamp pad inks, and other liquid colorants.
• Biological Staining: Utilized in histology and microscopy as a staining agent for biological tissues.
• Wood Staining: Used to impart a yellow color to wood surfaces and products.

Basic Information

Product Name	Acid Yellow 17
CAS No.	642-62-6
Molecular Formula	C16H13N3Na2O7S2
Molecular Weight	477.40 g/mol
Synonyms	Acid Yellow A; C.I. 18965; Food Yellow 4 (discontinued); Tartrazine O; Wool Yellow S; Kiton Yellow S; Lissamine Yellow 2G; Acid Leather Yellow T; 5-Hydroxy-1-(4-sulfonatophenyl)-4-[(4-sulfonatophenyl)azo]pyrazole-3-carboxylic acid trisodium salt
EINECS	211-403-8

Quality Control

Our Acid Yellow 17 is manufactured under a strict quality management system. Each batch undergoes comprehensive analytical testing to ensure consistent purity, color strength, and compliance with industry specifications. A Certificate of Analysis (COA) detailing key parameters such as assay, hue, and impurity profile is provided with every shipment to guarantee product integrity and traceability.

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 heat. Under these conditions, the product remains stable for an extended period.

Specification

Item	Specification
Appearance	Yellow to orange-yellow powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 85% (as is)
Color Strength	100 ± 5% (vs. Standard)
Moisture Content	≤ 5.0%
Water Insoluble Matter	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
pH (1% Solution)	6.0 - 8.0

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