Description

C.I. Acid Yellow 67 is a synthetic organic dye belonging to the azo chemical class, widely recognized for its bright, clear yellow hue. This product is valued for its strong affinity to protein fibers like wool, silk, and nylon, offering good light and wash fastness properties. It is a critical component for manufacturers in the textile, leather, and paper industries seeking reliable and consistent coloring agents. Our supply ensures high purity and batch-to-batch uniformity to meet stringent industrial production requirements.

Application

• Primary dyeing and printing of wool, silk, and nylon textiles.
• Coloration of leather goods, including footwear, apparel, and accessories.
• Manufacture of colored paper and paper products.
• Used in the formulation of inks for various printing applications.
• Potential use as a biological stain in laboratory and microscopy settings.
• Coloring agent for specialty plastics and coatings where acid dye compatibility is required.

Basic Information

Product Name	C.I. Acid Yellow 67
CAS No.	61724-50-3
Molecular Formula	C16H12N4Na2O7S2
Molecular Weight	506.40 g/mol
Synonyms	Acid Yellow 67; Acid Leather Yellow PG; C.I. 14167; Acid Fast Yellow E-2G; Acid Yellow E-2G; Acid Yellow G; Lissamine Yellow 2G; Supranol Yellow GW; Telon Yellow G; Dermina Yellow G
EINECS	262-964-1

Quality Control

Our C.I. Acid Yellow 67 is manufactured under a strict quality management system. Every batch is tested to ensure it meets specifications for color strength, shade, solubility, and impurity profiles. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing key parameters such as assay, moisture content, and heavy metal limits. Our quality commitment ensures reliable performance and consistency for your industrial processes.

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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after each use to prevent absorption of atmospheric moisture, which can affect product performance.

Specification

Item	Specification
Appearance	Yellow to orange-yellow powder
Identification (IR)	Conforms to standard
Assay (HPLC)	Min. 95%
Moisture Content	Max. 5.0%
Water Solubility	Conforms
Shade	Conforms to standard
Heavy Metals (as Pb)	Max. 20 ppm

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