Description

C.I. Acid Yellow 176 is a synthetic monoazo acid dye widely used for its bright, stable yellow hue. This high-performance colorant is valued for its excellent lightfastness, wash fastness, and compatibility with various substrates. It is primarily utilized by manufacturers in the textile, leather, and paper industries seeking reliable and vibrant coloration for nylon, wool, and silk fibers.

Application

• Primary dyeing and printing of nylon, wool, and silk textiles.
• Coloration of leather goods, including footwear, apparel, and accessories.
• Production of colored paper and specialty paper products.
• Ink formulation for applications requiring good acid dye properties.
• Dyeing of polyamide-based technical fabrics and carpets.

Basic Information

Product Name	C.I. Acid Yellow 176
CAS No.	12270-08-5
Molecular Formula	C21H18N4Na2O8S2
Molecular Weight	556.50 g/mol
Synonyms	Acid Yellow 176; Acid Leather Yellow N-GL; Acid Fast Yellow E-3GL; Nylosan Yellow E-3GL; Telon Yellow GRL; Supranol Yellow 3GL; C.I. 18970; 7-Hydroxy-8-[(2-methoxy-5-methyl-4-sulfophenyl)azo]-1,3-naphthalenedisulfonic acid disodium salt
EINECS	Contact for details

Quality Control

Our production of C.I. Acid Yellow 176 adheres to stringent quality management protocols to ensure batch-to-batch consistency and performance. Every lot is tested against key parameters for color strength, shade, solubility, and impurity profile. A Certificate of Analysis (COA) documenting purity, physical properties, and conformance to specification is provided with each shipment.

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 strong oxidizing agents.

Specification

Item	Specification
Appearance	Yellow to orange-yellow powder
Identification (IR)	Conforms
Color Strength	100 ± 3% (vs. Standard)
Moisture Content	≤ 5.0%
Water Insoluble Matter	≤ 0.5%
Shade	Within agreed tolerance
Solubility in Water	Conforms

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