Description

5-Amino-4-Hydroxy-3-[(2-Hydroxy-5-Nitrophenyl)Azo]Naphthalene-2,7-Disulphonic Acid is a high-purity, synthetic azo dye intermediate of significant industrial importance. Its complex molecular structure, featuring multiple functional groups, makes it a critical precursor for synthesizing specialized dyes and pigments. This compound is essential for manufacturers in the textile, ink, and specialty chemical sectors seeking to produce vivid, high-performance colorants with specific light-fastness and chemical resistance properties.

Application

• Primary Intermediate for Azo Dyes: Serves as a key building block in the synthesis of complex, high-value azo dyes for textiles and leather.
• Specialty Pigment Manufacturing: Used in the production of pigments for inks, coatings, and plastics requiring specific color shades and stability.
• Research & Development: Employed in chemical R&D for developing novel chromophores and studying structure-color relationships.
• Analytical Reagent: Can be utilized as a staining agent or a complexometric indicator in specific analytical chemistry applications.
• Functional Dye Synthesis: A precursor for dyes used in non-textile applications, such as in optical data storage or laser dyes.

Basic Information

Product Name	5-Amino-4-Hydroxy-3-[(2-Hydroxy-5-Nitrophenyl)Azo]Naphthalene-2,7-Disulphonic Acid
CAS No.	13301-33-2
Molecular Formula	C₁₆H₁₁N₅O₁₀S₂
Molecular Weight	497.42 g/mol
Synonyms	5-Amino-4-hydroxy-3-[(2-hydroxy-5-nitrophenyl)azo]naphthalene-2,7-disulfonic acid; C.I. 17215; Acid Brown 14 (related dye class); 2,7-Naphthalenedisulfonic acid, 5-amino-4-hydroxy-3-[(2-hydroxy-5-nitrophenyl)azo]-; 3-[(2-Hydroxy-5-nitrophenyl)azo]-5-amino-4-hydroxynaphthalene-2,7-disulfonic acid; Azo dye intermediate 13301-33-2
EINECS	Contact for details

Quality Control

Our production of 5-Amino-4-Hydroxy-3-[(2-Hydroxy-5-Nitrophenyl)Azo]Naphthalene-2,7-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 precise customer specifications. Certificates of Analysis (COA) documenting all critical parameters are provided as standard.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong oxidizing agents. Due to its complex structure, prolonged exposure to elevated temperatures or humidity should be avoided.

Specification

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

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