Description

3-[(4-Amino-2-Methoxy-5-Methylphenyl)Azo]Naphthalene-1,5-Disulphonic Acid is a specialized azo dye intermediate characterized by its disulphonic acid groups, which impart excellent water solubility and binding properties. This compound is critical for synthesizing high-value, colorfast dyes and pigments with specific hue and stability requirements. It is primarily required by manufacturers in the textile, ink, and specialty chemical industries for producing vibrant and durable colorants.

Application

• Primary Intermediate for Azo Dyes: Serves as a key building block in the synthesis of acid dyes and direct dyes for coloring nylon, silk, wool, and paper.
• Textile Industry: Used in the production of dyes that offer good lightfastness and washfastness on various natural and synthetic fibers.
• Ink Manufacturing: Employed in the formulation of inks for packaging, printing, and writing instruments, where consistent color strength is vital.
• Laboratory Reagent: Acts as a chemical reagent in research and development for studying azo coupling reactions and dye chemistry.
• Specialty Pigments: Can be utilized in the creation of pigments for coatings, plastics, and other industrial applications requiring specific color properties.
• Biological Staining: Potential use as a staining agent in histology or microbiology due to its chromophoric structure, though specific grades would be required.

Basic Information

Product Name	3-[(4-Amino-2-Methoxy-5-Methylphenyl)Azo]Naphthalene-1,5-Disulphonic Acid
CAS No.	65151-27-1
Molecular Formula	C18H16N4O7S2
Molecular Weight	464.47 g/mol
Synonyms	1,5-Naphthalenedisulfonic acid, 3-[(4-amino-2-methoxy-5-methylphenyl)azo]-; 3-[(4-Amino-2-methoxy-5-methylphenyl)diazenyl]naphthalene-1,5-disulfonic acid; C.I. 37120; Acid Dye Intermediate 65151-27-1; Azo Dye Intermediate CAS 65151-27-1; 4-Amino-2-methoxy-5-methylazobenzene-3',7'-disulfonic acid
EINECS	Contact for details

Quality Control

Our production of 3-[(4-Amino-2-Methoxy-5-Methylphenyl)Azo]Naphthalene-1,5-Disulphonic Acid adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure consistency and meet the specifications required for high-performance dye synthesis. A detailed Certificate of Analysis (COA) is provided with each shipment to guarantee traceability and compliance with your quality standards.

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 when not in use to prevent degradation from atmospheric humidity.

Specification

Item	Specification
Appearance	Dark brown to reddish-brown powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm
Water Solubility	Freely soluble

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