Description

7-(4-Amino-5-Methoxy-2-Methylphenylazo)-1,3,6-Naphthalenetrisulfonic Acid Trisodium Salt is a high-purity, water-soluble anionic azo dye intermediate. This compound is valued for its excellent chromophore properties and stability, making it a critical precursor for synthesizing specialized dyes and pigments. It is primarily required by manufacturers in the textile, ink, and specialty chemical industries for producing vivid and durable colorants.

Application

• Primary Intermediate for Reactive Dyes: Key building block for synthesizing high-performance reactive dyes used in cotton and cellulose fiber dyeing.
• Textile Colorant Production: Used in the manufacture of dyes for textiles requiring bright shades and good wet fastness properties.
• Specialty Ink Formulation: Serves as a colorant intermediate in the production of inks for jet printing and other specialty applications.
• Laboratory Reagent: Employed in research and development as a standard or intermediate for novel chromophore synthesis.
• Paper Dye Synthesis: Used in the production of dyes for coloring paper and related products.
• Biological Staining Agent Precursor: Potential use as an intermediate for developing staining agents used in histology and microscopy.

Basic Information

Product Name	7-(4-Amino-5-Methoxy-2-Methylphenylazo)-1,3,6-Naphthalenetrisulfonic Acid Trisodium Salt
CAS No.	54547-21-6
Molecular Formula	C18H14N3Na3O10S3
Molecular Weight	605.45 g/mol
Synonyms	7-(4-Amino-5-methoxy-2-methylphenylazo)-1,3,6-naphthalenetrisulfonic acid sodium salt; Trisodium 7-[(4-amino-5-methoxy-2-methyl)phenyl]azo]-1,3,6-naphthalenetrisulfonate; C.I. Acid Yellow 40 (related); Azo dye intermediate 54547-21-6; Aminomethoxymethyl phenylazonaphthalene trisulfonate; Reactive Yellow Dye Intermediate; Trisulfonated azo dye intermediate
EINECS	Contact for details

Quality Control

Our production of 7-(4-Amino-5-Methoxy-2-Methylphenylazo)-1,3,6-Naphthalenetrisulfonic Acid Trisodium Salt adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure consistency and compliance with industry specifications. Certificates of Analysis (COA) detailing batch-specific results are available upon request to support your quality assurance processes.

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.

Specification

Item	Specification
Appearance	Brownish-red to dark brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Water Content (KF)	≤ 5.0%
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm
Solubility (in Water)	Freely soluble

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