Description

A 1:1 mixture of: 2-[[4-[N-ethyl-N-(2-acetoxyethyl)amino]phenyl]azo]-5,6-dichlorobenzothiazole 2-[[4-[N-ethyl-N-(2-acetoxyethyl)amino]phenyl]azo]-6,7-dichlorobenzothiazole is a high-purity, specialized azo dye intermediate designed for demanding synthesis applications. This compound is valued for its role in producing high-performance colorants with specific shade and fastness properties. It is primarily required by manufacturers in the textile, ink, and specialty polymer industries seeking to develop advanced, color-stable products.

Application

• Primary Intermediate for Disperse Dyes: A key building block in the synthesis of high-quality disperse dyes for synthetic fibers like polyester and acetate.
• Specialty Ink Formulation: Used in the production of pigments for inks requiring specific color characteristics and stability, such as in textile printing.
• Plastic and Polymer Coloring: Serves as a precursor for colorants used in coloring engineering plastics and synthetic polymers.
• Research & Development: Employed in chemical R&D for developing novel chromophores and studying structure-property relationships in dye chemistry.
• Functional Dye Synthesis: Potential use in creating dyes for non-textile applications, including optical data storage or laser dyes.

Basic Information

Item	Detail
Product Name	A 1:1 mixture of: 2-[[4-[N-ethyl-N-(2-acetoxyethyl)amino]phenyl]azo]-5,6-dichlorobenzothiazole 2-[[4-[N-ethyl-N-(2-acetoxyethyl)amino]phenyl]azo]-6,7-dichlorobenzothiazole
CAS No.	111381-11-4
Molecular Formula	C21H20Cl2N4O2S (for each isomer)
Molecular Weight	487.38 g/mol (for each isomer)
Synonyms	Disperse Blue 291:1; C.I. 113395; 2-[[4-[N-Ethyl-N-(2-acetoxyethyl)amino]phenyl]azo]-5,6-dichloro-1,3-benzothiazole mixture with 6,7-dichloro isomer; Acetate Ester of C.I. Disperse Blue 291; Azo Benzothiazole Dye Intermediate; 5,6-Dichloro-2-((4-(N-ethyl-N-(2-acetoxyethyl)amino)phenyl)azo)benzothiazole; 6,7-Dichloro-2-((4-(N-ethyl-N-(2-acetoxyethyl)amino)phenyl)azo)benzothiazole
EINECS	Contact for details

Quality Control

Our production of this dye intermediate adheres to strict quality control protocols to ensure batch-to-batch consistency and high purity. Quality is verified through advanced analytical techniques including HPLC and GC-MS. A comprehensive Certificate of Analysis (COA) detailing purity, isomer ratio, and impurity profiles is provided with every shipment to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). Keep away from heat, sparks, and open flame. Due to its light-sensitive nature, containers should be opaque or stored in darkness.

Specification

Item	Specification
Appearance	Dark blue to violet powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 97.0% (Total of both isomers)
Isomer Ratio (5,6- : 6,7-Dichloro)	50 : 50 (± 5%)
Loss on Drying	≤ 1.0%
Residue on Ignition (Sulfated Ash)	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

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