Description

Acid Yellow 14 (C.I. 18960) is a synthetic, water-soluble azo dye belonging to the acid dye class. It is valued for its bright, clear yellow hue and good lightfastness properties, making it a reliable colorant for demanding applications. This dye is primarily used by manufacturers in the textile, paper, and leather industries for coloring protein-based fibers like wool, silk, and nylon, as well as for specialty ink formulations.

Application

• Primary dyeing and printing of wool, silk, and nylon textiles.
• Coloration of leather goods, including footwear and upholstery.
• Manufacturing of colored paper and paper products.
• Formulation of inks for ballpoint pens, stamp pads, and other writing instruments.
• Production of wood stains and other decorative coatings.
• As a colorant for soaps and detergents.
• Used in the coloring of food packaging materials (where regulatory approved).
• Research and development applications in analytical chemistry as a pH indicator or biological stain.

Basic Information

Product Name	Acid Yellow 14
CAS No.	6359-97-3
Molecular Formula	C16H13ClN4NaO4S
Molecular Weight	432.81 g/mol
Synonyms	Acid Yellow 14; C.I. 18960; Food Yellow 5; Tartrazine O; Acid Leather Yellow T; Wool Yellow T; Lissamine Fast Yellow 2G; Acid Fast Yellow E-2G; Kiton Yellow 2G; Yellow No. 5 Lake; 5-Hydroxy-1-(4-sulfonatophenyl)-4-((4-sulfonatophenyl)azo)pyrazole-3-carboxylic acid trisodium salt
EINECS	228-782-5

Quality Control

Our Acid Yellow 14 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 including 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, 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 color stability.

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 Insoluble Matter	≤ 0.2%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility in Water	Clear solution
pH (1% Solution)	6.0 - 8.0

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