Description

Acid Yellow 3 is a synthetic organic dye belonging to the azo dye class, widely recognized for its bright, clear yellow hue. This colorant is valued for its strong tinctorial strength and good solubility in water, making it a versatile and efficient choice for industrial coloring applications. It is primarily used in the textile industry for dyeing natural and synthetic fibers, as well as in the production of inks, paper, and leather goods.

Application

• Textile Dyeing: Primary application for dyeing wool, silk, nylon, and other polyamide fibers to achieve vibrant yellow shades.
• Leather Coloring: Used in the dyeing and finishing of leather products for footwear, apparel, and accessories.
• Ink Manufacturing: A key pigment for formulating writing inks, printing inks, and specialty inks requiring a stable yellow color.
• Paper Staining: Employed in the coloring of paper products, including decorative papers and specialty packaging.
• Biological Staining: Potential use as a histological stain in laboratory settings for microscopic analysis.
• Plastics and Polymers: Can be used for coloring certain types of plastics and synthetic materials.

Basic Information

Product Name	Acid Yellow 3
CAS No.	38615-46-2
Molecular Formula	C16H13N3Na2O7S2
Molecular Weight	477.40 g/mol
Synonyms	Acid Yellow 3; C.I. 47005; Food Yellow 13; D&C Yellow No. 10; Quinoline Yellow WS; Acid Leather Yellow D3G; Acid Yellow 3G; Acid Fast Yellow 3G; Acid Yellow G; Acid Yellow 3GL; Acid Yellow 3GN; Acid Yellow 3GS; Acid Yellow 3GW; Acid Yellow 3GX
EINECS	254-073-8

Quality Control

Our Acid Yellow 3 is manufactured under a strict quality management system to ensure batch-to-batch consistency and performance. Quality is verified through comprehensive testing, including spectrophotometric analysis for color strength and purity, and checks for insolubles and heavy metals. While this product is commonly produced to industrial grade specifications, we can discuss compliance with specific standards such as those for cosmetics (D&C) or food contact upon request. A Certificate of Analysis (COA) detailing all test results is provided with every 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). This product is hygroscopic (moisture-sensitive); ensure the container is kept tightly sealed to prevent absorption of atmospheric moisture, which can affect performance. Keep away from incompatible materials such as strong oxidizing agents.

Specification

Item	Specification
Appearance	Yellow to orange-yellow powder
Identification (UV-Vis)	Conforms
Color Strength	100 ± 3% (vs. Standard)
Moisture Content	≤ 5.0%
Water Insoluble Matter	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Ash Content	≤ 1.0%
Solubility in Water	Clear solution

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