Description

C.I.Acid Yellow 75 is a synthetic organic dye belonging to the acid dye class, identified by CAS No. 12239-16-6. It is valued for its bright, stable yellow hue and strong affinity for protein-based and polyamide fibers. This dye is essential for manufacturers in the textile, leather, and paper industries seeking consistent coloration and good fastness properties. Its formulation is designed to meet the rigorous demands of industrial dyeing and printing processes.

Application

• Primary dyeing and printing of wool, silk, and nylon textiles.
• Coloration of leather goods, including apparel, upholstery, and accessories.
• Manufacture of colored paper and specialty paper products.
• Ink formulation for ballpoint pens and other writing instruments.
• Staining and tinting applications in the biomedical and research sectors.
• Production of cosmetic products such as soaps and hair dyes where applicable under regulations.

Basic Information

Product Name	C.I. Acid Yellow 75
CAS No.	12239-16-6
Molecular Formula	C16H12N4Na2O7S2
Molecular Weight	490.40 g/mol
Synonyms	Acid Yellow 75; C.I. 18835; Acid Leather Yellow G; Acid Fast Yellow G; Acid Yellow G; Wool Yellow G; Nylon Fast Yellow G; Lissamine Fast Yellow G; Acid Yellow 75 sodium salt
EINECS	Contact for details

Quality Control

Our C.I. Acid Yellow 75 is manufactured under a strict quality management system. Each batch undergoes comprehensive testing for key parameters including color strength, shade, solubility, and impurity profile to ensure batch-to-batch consistency and compliance with industry specifications. Certificates of Analysis (COA) documenting purity, physical properties, and performance characteristics are available upon request.

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. The product is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	Yellow to orange-yellow powder
Identification (IR)	Conforms to standard
Color Strength	100 ± 3% (vs. Standard)
Moisture Content	≤ 5.0%
Water Solubility	Conforms
Ash Content	≤ 30.0%
pH (1% Solution)	6.0 - 8.0
Heavy Metals (as Pb)	≤ 20 ppm

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