Description

Sodium 6-Hydroxy-5-[(2-Hydroxy-5-Nitrophenyl)Azo]Naphthalene-2-Sulphonate is a synthetic azo dye intermediate known for its vibrant color properties and chemical functionality. This compound is critical for manufacturers requiring precise and stable chromophores for advanced material synthesis. It is primarily utilized by industries involved in the production of specialized dyes, pigments, and colorants for textiles, inks, and analytical reagents.

Application

• Dye and Pigment Intermediate: A key precursor in the synthesis of acid dyes and pigments for textile fibers like wool, silk, and nylon.
• Ink Manufacturing: Used in the formulation of specialty inks, including those for security printing and high-performance markers.
• Analytical Chemistry: Functions as a colorimetric reagent or indicator in various laboratory testing and diagnostic applications.
• Research & Development: Serves as a building block in organic synthesis for novel chromophores and functional materials in academic and industrial R&D.
• Industrial Colorants: Employed in the coloring of papers, leather, and other specialty materials where specific shade and fastness are required.

Basic Information

Product Name	Sodium 6-Hydroxy-5-[(2-Hydroxy-5-Nitrophenyl)Azo]Naphthalene-2-Sulphonate
CAS No.	3624-64-4
Molecular Formula	C₁₆H₁₀N₃NaO₇S
Molecular Weight	411.32 g/mol
Synonyms	Acid Orange 12; C.I. 15970; 6-Hydroxy-5-[(2-hydroxy-5-nitrophenyl)azo]-2-naphthalenesulfonic acid sodium salt; Sodium 5-[(2-hydroxy-5-nitrophenyl)azo]-6-hydroxy-2-naphthalenesulfonate; Orange G; Wool Orange G; Nitrazol Yellow; 2-Naphthalenesulfonic acid, 6-hydroxy-5-[(2-hydroxy-5-nitrophenyl)azo]-, monosodium salt
EINECS	222-829-1

Quality Control

Our products undergo rigorous quality testing to ensure compliance with industry standards. We provide comprehensive quality assurance with each batch, including testing for identity, purity, and heavy metal content. Certificates of Analysis (COA) are available upon request to support your quality management and regulatory needs.

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). Keep away from strong oxidizing agents and incompatible materials.

Specification

Item	Specification
Appearance	Orange to reddish-brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	≤ 30.0%
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.