Description

C.I. Acid Yellow 141 is a synthetic organic 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 and strong affinity to polyamide fibers like nylon, ensuring vibrant and durable coloration. It is primarily utilized by manufacturers in the textile, leather, and paper industries seeking reliable and consistent dyeing results for their products.

Application

• Textile Dyeing: Primary application for dyeing nylon, wool, and silk fibers, providing excellent wash and light fastness.
• Leather Finishing: Used for coloring leather goods, offering rich and uniform shades with good penetration.
• Paper Coloration: Employed in the production of specialty papers, decorative paper, and packaging materials.
• Ink Formulation: A key component in the manufacture of inks for various printing applications.
• Plastics and Polymers: Suitable for coloring certain types of plastics where acid dye compatibility is required.

Basic Information

Product Name	C.I. Acid Yellow 141
CAS No.	72827-85-1
Molecular Formula	C21H20N4Na2O8S2
Molecular Weight	582.52 g/mol
Synonyms	Acid Yellow 141; Acid Fast Yellow E-3G; C.I. 24895; Acid Leather Yellow E-3G; Nylosan Yellow E-3G; Telon Yellow ANL; Acid Yellow E-3G; 2,7-Naphthalenedisulfonic acid, 5-(acetylamino)-4-hydroxy-3-[[2-methoxy-5-[(2-methylphenyl)azo]phenyl]azo]-, disodium salt
EINECS	Contact for details

Quality Control

Our C.I. Acid Yellow 141 is manufactured under strict quality management systems to ensure batch-to-batch consistency and performance. Quality is verified through comprehensive testing including spectrophotometric analysis, strength assessment, and shade matching against industry standards. A Certificate of Analysis (COA) detailing purity, strength, and physical parameters is provided with every shipment to guarantee it meets your specific application 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. The product is light-sensitive and should be stored away from direct light exposure to maintain stability.

Specification

Item	Specification
Appearance	Yellow to orange powder
Identification (IR)	Conforms to standard
Color Strength	100 ± 3% (vs. Standard)
Shade	Conforms to standard
Moisture Content	≤ 5.0%
Water Insoluble Matter	≤ 0.5%
pH (1% Solution)	6.0 - 8.0
Fastness Properties	Light: 5-6; Wash: 4-5

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