Description

Sodium 2-(4-Aminophenyl)-5-Methylbenzothiazole-7-Sulphonate is a specialized organic salt and a key intermediate in the synthesis of advanced functional dyes and pigments. This compound matters for its role in producing colorants with specific optical properties, including fluorescence and high tinctorial strength, which are critical for demanding applications. Industries such as textile manufacturing, specialty inks, and advanced material research require this high-purity intermediate to ensure consistent quality and performance in their final products.

Application

• Dye & Pigment Intermediate: Primary building block for synthesizing reactive, acid, and direct dyes, particularly for textile fibers like cotton, wool, and nylon.
• Fluorescent Dye Synthesis: Key precursor in the manufacture of benzothiazole-based fluorescent whitening agents (FWAs) and optical brighteners for paper, detergents, and plastics.
• Specialty Inks: Used in the production of high-performance inks for security printing, digital textile printing, and other niche applications requiring precise color characteristics.
• Research & Development: Serves as a crucial reagent in organic synthesis and material science R&D for developing novel photonic and electronic materials.
• Analytical Chemistry: Can be utilized as a standard or reagent in chromatographic analysis and other laboratory testing methods for dye-related compounds.

Basic Information

Product Name	Sodium 2-(4-Aminophenyl)-5-Methylbenzothiazole-7-Sulphonate
CAS No.	65072-40-4
Molecular Formula	C14H11N2NaO3S2
Molecular Weight	342.36 g/mol
Synonyms	2-(4-Aminophenyl)-5-methyl-7-sulfobenzothiazole Sodium Salt; Sodium 2-(p-Aminophenyl)-5-methylbenzothiazole-7-sulfonate; 7-Sulfo-2-(4-aminophenyl)-5-methylbenzothiazole Sodium Salt; Benzothiazolesulfonic acid, 2-(4-aminophenyl)-5-methyl-, sodium salt; Intermediate for Optical Brightener; Dye Intermediate OB-1; FWA Intermediate
EINECS	Contact for details

Quality Control

Our production of Sodium 2-(4-Aminophenyl)-5-Methylbenzothiazole-7-Sulphonate adheres to stringent quality management protocols to ensure batch-to-batch consistency and high purity. Each lot undergoes comprehensive analytical testing, including HPLC for assay and purity, and is supplied with a corresponding Certificate of Analysis (COA). We are committed to meeting the specific requirements of our global B2B partners in the dye and specialty chemical industries.

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 sealed to prevent absorption of atmospheric moisture, which can affect product quality and handling properties.

Specification

Item	Specification
Appearance	Yellow to brownish-yellow powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Contact for details

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