Description

C.I. Basic Yellow 65 is a synthetic cationic dye belonging to the methine class, valued for its bright and intense yellow hue. It is a critical component for imparting vibrant, wash-fast coloration to a variety of substrates, particularly those with anionic character. This product is essential for manufacturers in the textile, paper, and specialty ink industries seeking reliable and consistent colorants for their processes.

Application

• Textile Dyeing and Printing: Primarily used for dyeing acrylic fibers, modacrylics, and acid-modified nylons, offering excellent color yield and fastness properties.
• Paper Coloring: Effective for the surface coloring and tinting of paper and paperboard products.
• Ink Formulation: Used in the production of specialty inks, including inkjet inks and security inks, where a stable yellow colorant is required.
• Leather Finishing: Applied in the dyeing of leather to achieve bright yellow shades.
• Biological Staining: May be utilized as a stain in certain microbiological and histological applications.
• Plastics and Polymers: Suitable for coloring certain types of plastics where compatibility is confirmed.

Basic Information

Product Name	C.I. Basic Yellow 65
CAS No.	71838-60-3
Molecular Formula	C21H29N3O3S
Molecular Weight	403.54 g/mol
Synonyms	Basic Yellow 65; C.I. 48052; Astrazon Yellow 8GL; Aizen Cathilon Yellow 8GLH; Maxilon Yellow 8GL; Sevron Yellow 8GMF; Sumiacryl Yellow N-8GL; Yation Yellow 8GL; 2-[[4-[Ethyl(3-sulfobenzyl)amino]phenyl]azo]-6-methoxy-3-methylbenzothiazolium hydroxide inner salt
EINECS	Contact for details

Quality Control

Our production of C.I. Basic Yellow 65 adheres to stringent quality management protocols to ensure batch-to-batch consistency and performance. Each lot is tested against key parameters including color strength, shade, solubility, and impurity profile. A comprehensive Certificate of Analysis (COA) detailing these results is provided with every shipment to guarantee it meets your technical specifications.

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 material is hygroscopic (moisture-sensitive); keep the container tightly sealed when not in use to prevent absorption of atmospheric moisture, which can affect performance.

Specification

Item	Specification
Appearance	Yellow to orange-yellow powder
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Color Strength	100 ± 5% (vs. Standard)
Moisture Content	Max. 5.0%
Water Solubility	Conforms
Ash Content	Max. 1.0%

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