Description

Acid Yellow 120 is a synthetic anionic dye belonging to the azo chemical class, widely recognized for its bright and stable yellow hue. This high-performance colorant is valued for its excellent lightfastness, wash fastness, and compatibility with various substrates, ensuring consistent and durable coloration. It is primarily used by manufacturers in the textile, leather, and paper industries seeking reliable and vibrant yellow shades for their products.

Application

• Textile Dyeing: Primary application for dyeing natural and synthetic fibers, including wool, silk, and nylon, to achieve bright yellow colors.
• Leather Finishing: Used in the coloration of leather goods, providing uniform and fast color with good penetration.
• Paper Coloring: Employed in the production of colored papers, tissues, and specialty packaging materials.
• Ink Formulation: A key component in the manufacture of inks for writing, printing, and marking applications.
• Biological Staining: Potential use as a histological stain in laboratory settings for microscopic analysis.
• Plastics and Polymers: Can be used for mass coloration of certain plastics where color stability is required.

Basic Information

Product Name	Acid Yellow 120
CAS No.	6421-67-6
Molecular Formula	C26H19N4NaO8S2
Molecular Weight	610.57 g/mol
Synonyms	Acid Yellow MR; C.I. Acid Yellow 120; Lissamine Yellow 2G; Acid Fast Yellow EFC; Acid Leather Yellow MR; Acidol Yellow M-RL; Aizen Acid Yellow MRH; Amacid Yellow MR; Derma Yellow G; Elbenyl Yellow G; Erionyl Yellow MR; Java Yellow MR; Leather Yellow MR; Naphthalene Yellow MR; Sandolan Yellow E-RL; Supranol Yellow RL; Telon Yellow M-RL; Yellow 2G
EINECS	229-185-2

Quality Control

Our Acid Yellow 120 is manufactured under a strict quality management system to ensure batch-to-batch consistency and performance. Each lot is tested against stringent in-house specifications for critical parameters such as color strength, shade, solubility, and impurity profile. A Certificate of Analysis (COA) detailing these results is provided with every shipment to guarantee compliance with your technical requirements.

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 such as strong oxidizing agents.

Specification

Item	Specification
Appearance	Yellow to orange-brown powder
Identification (IR)	Conforms to standard
Assay (HPLC)	Min. 95%
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.