Description

1,2,3-Trimethyl-5-[(1-Methyl-1H-Indol-3-Yl)Azo]-1H-Pyrazolium Methyl Sulphate is a specialized cationic azo dye intermediate, valued for its unique heterocyclic structure that imparts specific color and binding properties. This compound is critical for manufacturers requiring high-purity, functional intermediates to produce advanced dyes and pigments with enhanced performance characteristics. It is primarily utilized in the synthesis of specialized dyes for the textile, ink, and advanced materials sectors, where precise molecular control is essential.

Application

• Synthesis of Cationic Dyes: A key intermediate for producing cationic (basic) dyes used in acrylic fiber dyeing.
• Specialty Ink Formulations: Used in the manufacture of high-performance inks for digital and industrial printing applications.
• Functional Pigment Production: Serves as a precursor for creating pigments with specific optical or electronic properties.
• Research & Development: Employed in chemical R&D for developing novel chromophores and photoactive materials.
• Analytical Chemistry: Can be used as a staining agent or a reagent in specific analytical methodologies.

Basic Information

Item	Details
Product Name	1,2,3-Trimethyl-5-[(1-Methyl-1H-Indol-3-Yl)Azo]-1H-Pyrazolium Methyl Sulphate
CAS No.	75284-34-3
Molecular Formula	C₁₆H₂₁N₅O₄S
Molecular Weight	379.44 g/mol
Synonyms	Basic Red 46 (C.I. 110825); 1,2,3-Trimethyl-5-[(1-methyl-1H-indol-3-yl)azo]-1H-pyrazolium methyl sulfate; 1H-Pyrazolium, 5-[(1-methyl-1H-indol-3-yl)azo]-1,2,3-trimethyl-, methyl sulfate; Cationic azo dye intermediate; Astrazon Red GTL; Azoic diazo component 46; [1-Methyl-3-[(1,2,3-trimethyl-1H-pyrazolium-5-yl)azo]-1H-indole] methyl sulfate
EINECS	Contact for details

Quality Control

Our production of 1,2,3-Trimethyl-5-[(1-Methyl-1H-Indol-3-Yl)Azo]-1H-Pyrazolium Methyl Sulphate adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure consistency and compliance with customer specifications. Certificates of Analysis (COA) documenting all critical parameters are provided with each shipment.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed when not in use to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	Dark red to brown powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Heavy Metals	≤ 20 ppm
Residual Solvents	Meets ICH guidelines

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