Description

6-Amino-4-Hydroxy-5-[[2-Sulpho-4-[[2-(Sulphooxy)Ethyl]Sulphonyl]Phenyl]Azo]Naphthalene-2-Sulphonic Acid is a high-purity, water-soluble azo dye intermediate characterized by its multiple sulphonic acid groups. This compound is essential for synthesizing reactive and direct dyes, providing excellent color fastness and affinity to cellulosic fibers like cotton and viscose. It is a critical raw material for dye manufacturers and chemical suppliers serving the global textile, ink, and specialty chemical industries.

Application

• Primary intermediate for the synthesis of reactive red and orange dyes used in textile dyeing and printing.
• Key precursor in manufacturing direct dyes for paper, leather, and cellulosic fabrics.
• Used in the production of specialty pigments and colorants for inks and coatings.
• Intermediate for research and development of novel azo-based functional dyes with specific optical properties.
• Potential use in the synthesis of biological stains and diagnostic reagents in life sciences.
• Serves as a starting material for high-value fine chemicals in advanced material science applications.

Basic Information

Item	Detail
Product Name	6-Amino-4-Hydroxy-5-[[2-Sulpho-4-[[2-(Sulphooxy)Ethyl]Sulphonyl]Phenyl]Azo]Naphthalene-2-Sulphonic Acid
CAS No.	42986-19-6
Molecular Formula	C18H16N3O13S4
Molecular Weight	644.62 g/mol
Synonyms	6-Amino-4-hydroxy-5-[(2-sulfo-4-[(2-sulfooxyethyl)sulfonyl]phenyl)azo]-2-naphthalenesulfonic acid; Reactive Red Dye Intermediate; 2-Naphthalenesulfonic acid, 6-amino-4-hydroxy-5-[(2-sulfo-4-[(2-sulfooxyethyl)sulfonyl]phenyl)azo]-; Azo dye intermediate 42986-19-6; 5-[(4-[(2-Hydroxyethyl)sulfonyl]-2-sulfophenyl]azo]-6-amino-4-hydroxy-2-naphthalenesulfonic acid ester sulfate; C.I. Reactive Red 180 intermediate; Sulphonated azo naphthalene derivative
EINECS	Contact for details

Quality Control

Our production of 6-Amino-4-Hydroxy-5-[[2-Sulpho-4-[[2-(Sulphooxy)Ethyl]Sulphonyl]Phenyl]Azo]Naphthalene-2-Sulphonic Acid adheres to stringent ISO 9001 quality management systems. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure compliance with industry specifications. Certificates of Analysis (COA) detailing purity, impurity profile, and physical characteristics are provided to guarantee batch-to-batch consistency and traceability.

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). This product is hygroscopic (moisture-sensitive); the container must be kept tightly sealed after opening to prevent absorption of atmospheric moisture, which can affect purity and performance. Keep away from strong acids and incompatible organic solvents.

Specification

Item	Specification
Appearance	Dark red to brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Purity (HPLC Area %)	≥ 98.0%
Water Content (KF)	≤ 5.0%
pH (1% Solution)	2.0 - 4.0
Heavy Metals (as Pb)	≤ 20 ppm
Solubility	Freely soluble in water

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