Description

C.I. Acid Yellow 195 is a synthetic organic dye belonging to the azo chemical class, widely recognized for its bright and stable yellow hue. This high-performance colorant is valued for its excellent lightfastness, wash fastness, and compatibility with various substrates, ensuring consistent and reliable coloration. It is primarily utilized by manufacturers in the textile, leather, and paper industries seeking durable and vibrant yellow shades for their products.

Application

• Textile Dyeing: Primary application for dyeing nylon, wool, and silk fibers to achieve bright, fast yellow colors.
• Leather Finishing: Used in the coloration of leather goods, providing good penetration and uniform shade.
• Paper Coloring: Employed in the production of specialty papers, decorative papers, and packaging materials.
• Ink Formulation: A key component in the manufacture of inks for various printing applications.
• Wood Staining: Suitable for imparting a yellow tint to wood surfaces in decorative applications.
• Biological Staining (Research Grade): Potential use as a histological stain in laboratory settings for microscopic analysis.

Basic Information

Product Name	C.I. Acid Yellow 195
CAS No.	71872-27-0
Molecular Formula	C21H16N4Na2O8S2
Molecular Weight	582.48 g/mol
Synonyms	Acid Yellow 195; C.I. 19540; Acid Leather Yellow N-2R; Nylosan Yellow E-2R; Telon Yellow K-2G; Supranol Yellow 4GL; Acid Fast Yellow E-2G; 2,7-Naphthalenedisulfonic acid, 5-[[4-[(2,4-diaminophenyl)azo]phenyl]azo]-3-hydroxy-4-[(4-nitrophenyl)azo]-, sodium salt (1:2)
EINECS	Contact for details

Quality Control

Our C.I. Acid Yellow 195 is manufactured under a strict quality management system to ensure batch-to-batch consistency and performance. Each lot is tested against rigorous in-house specifications for critical parameters such as 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, 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.

Specification

Item	Specification
Appearance	Yellow to orange-yellow powder
Identification (IR)	Conforms to standard
Color Strength	100 ± 3% (vs. Standard)
Shade	Conforms to standard
Moisture Content	≤ 5.0%
Water Insoluble Matter	≤ 0.5%
Heavy Metals (as Pb)	≤ 50 ppm
Solubility in Water	Conforms

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