Description

3-[(4-Amino-2-Methoxyphenyl)Azo]-4-Hydroxy-6-[(3-Sulphophenyl)Amino]Naphthalene-2-Sulphonic Acid, Sodium Salt is a high-purity, water-soluble azo dye intermediate of significant commercial importance. This compound is valued for its role in synthesizing specialized dyes and pigments with excellent color fastness and specific optical properties. It is primarily required by manufacturers in the textile, ink, and specialty chemical industries for producing high-performance colorants.

Application

• Key intermediate for the synthesis of azo dyes and pigments used in textile coloration.
• Production of specialty inks for printing applications requiring specific hue and stability.
• Manufacturing of colorants for plastics and polymers.
• Research and development of novel functional dyes for non-textile applications.
• Potential use in the formulation of biological stains and indicators for laboratory use.
• Intermediate for high-value pigments used in coatings and paints.

Basic Information

Product Name	3-[(4-Amino-2-Methoxyphenyl)Azo]-4-Hydroxy-6-[(3-Sulphophenyl)Amino]Naphthalene-2-Sulphonic Acid, Sodium Salt
CAS No.	75627-18-8
Molecular Formula	C23H19N5O7S2Na
Molecular Weight	588.55 g/mol
Synonyms	Acid Red 299; C.I. 18130; Sodium 3-[(4-amino-2-methoxyphenyl)azo]-4-hydroxy-6-[(3-sulfophenyl)amino]-2-naphthalenesulfonate; 2-Naphthalenesulfonic acid, 3-[(4-amino-2-methoxyphenyl)azo]-4-hydroxy-6-[(3-sulfophenyl)amino]-, sodium salt; 6-Amino-3-[(4-amino-2-methoxyphenyl)azo]-4-hydroxy-2-naphthalenesulfonic acid, sodium salt; Azo dye intermediate 75627-18-8
EINECS	Contact for details

Quality Control

Our production of this dye intermediate adheres to strict quality control protocols to ensure batch-to-batch consistency and high purity. The manufacturing process is monitored against established in-house specifications. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment to support your quality assurance systems.

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 tightly sealed when not in use to prevent absorption of atmospheric moisture.

Specification

Item	Specification
Appearance	Dark red to brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm
Related Substances (HPLC)	Individual impurity ≤ 1.0%

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