Description

Acid Yellow 11 is a synthetic organic dye belonging to the azo class, widely recognized for its bright and stable yellow hue. This high-performance colorant is valued for its excellent tinctorial strength and good solubility in water, making it a versatile and efficient choice for industrial coloration. It is primarily utilized by manufacturers in the textile, paper, and leather industries seeking consistent and vibrant yellow shades for their products.

Application

• Textile Dyeing: Used for dyeing wool, silk, and nylon fibers to achieve bright yellow colors with good wash and light fastness.
• Paper Coloring: Employed in the production of colored papers, tissues, and specialty packaging materials.
• Leather Finishing: Applied in the dyeing of leather goods, including footwear, apparel, and accessories.
• Ink Formulation: Serves as a colorant in the manufacture of inks for various printing applications.
• Biological Staining: Used in specific histological and cytological staining procedures in laboratory settings.
• Specialty Chemical Intermediate: Acts as a precursor or intermediate in the synthesis of more complex dyes and pigments.

Basic Information

Product Name	Acid Yellow 11
CAS No.	6359-82-6
Molecular Formula	C16H13N4NaO4S
Molecular Weight	380.35 g/mol
Synonyms	Acid Yellow 2G; C.I. 18820; Food Yellow 9; Tartrazine Yellow A; Wool Yellow 2G; Lissamine Yellow 2G; Acid Leather Yellow T; Kiton Yellow 2G
EINECS	228-782-5

Quality Control

Our Acid Yellow 11 is manufactured under a stringent quality management system to ensure batch-to-batch consistency and reliability. Each lot is tested against comprehensive specifications for color strength, purity, and solubility. A detailed Certificate of Analysis (COA) is provided with every shipment, documenting key parameters such as assay, shade, and impurity profiles to meet the specific needs of our global B2B clients.

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). This material is hygroscopic (moisture-sensitive); ensure the container is kept tightly sealed to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Yellow to orange powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 95.0%
Color Strength	100 ± 3%
Moisture Content	≤ 5.0%
Water Solubility	Clear solution at 1%
Ash Content	≤ 0.5%

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