Description

[2,6'-Bibenzothiazole]-7-sulfonic acid, 2'-(4-aminophenyl)-6-methyl-, diazotized, coupled with diazotized aniline, diazotized 2-(4-aminophenyl)-6-methyl-7-benzothiazolesulfonic acid and resorcinol, sodium salts is a complex, high-value organic dye intermediate. It matters for its role as a precise chromophore precursor, enabling the synthesis of dyes with specific and stable color properties. Industrial manufacturers of optical brighteners, specialized pigments, and high-performance dyes for textiles and polymers are the primary users of this advanced chemical.

Application

• Primary use as a key intermediate in the synthesis of complex benzothiazole-based dyes and optical brighteners.
• Manufacture of specialized pigments for high-demand applications requiring specific lightfastness and color intensity.
• Production of functional dyes for technical textiles, including military and automotive fabrics.
• Research and development of novel chromophores for advanced materials science and organic electronics.
• Potential use in the formulation of laser dyes and other photonic materials.
• As a standard or reference compound for analytical and quality control laboratories in the dye industry.

Basic Information

Product Name	[2,6'-Bibenzothiazole]-7-sulfonic acid, 2'-(4-aminophenyl)-6-methyl-, diazotized, coupled with diazotized aniline, diazotized 2-(4-aminophenyl)-6-methyl-7-benzothiazolesulfonic acid and resorcinol, sodium salts
CAS No.	90268-11-4
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	C.I. Fluorescent Brightener 260; Fluorescent Brightener 260; Benzenesulfonic acid, 2,2'-(1,2-ethenediyl)bis[5-(4-aminophenyl)-6-methyl-7-benzothiazolesulfonic acid] deriv., sodium salts; Sodium 2,2'-(1,2-ethenediyl)bis[5-(4-aminophenyl)-6-methyl-7-benzothiazolesulfonate]; Optical Brightener 260; FBA 260; 2,2'-(Ethene-1,2-diyl)bis[5-(4-aminophenyl)-6-methylbenzothiazole-7-sulfonic acid] sodium salt derivative.
EINECS	Contact for details

Quality Control

Our production of this advanced dye intermediate adheres to strict quality protocols to ensure batch-to-batch consistency and purity for your synthesis processes. Quality is verified through modern analytical techniques including HPLC and spectroscopic methods. A comprehensive Certificate of Analysis (COA) detailing purity, identity, 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 room temperature (15-25°C). This material is light-sensitive (store away from light) and may be hygroscopic (moisture-sensitive); keep the container tightly sealed when not in use. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Yellow to brownish powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	Min. 95%
Loss on Drying	Max. 5.0%
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	Max. 20 ppm
Related Substances (HPLC)	Individual impurity: Max. 1.0% Total impurities: Max. 5.0%

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