Description

Sodium 4-[(4-Butylphenyl)Azo]-3-Hydroxy-2-Naphthoate is an azo dye intermediate, specifically a sodium salt of a naphthoic acid derivative, valued for its role in producing vivid and stable colorants. This compound is essential for manufacturers requiring precise and consistent chromophores to achieve specific shades in various industrial applications. It is primarily needed by producers in the pigment, dye, ink, and specialty coatings industries, where color performance and batch-to-batch uniformity are critical.

Application

• Primary Intermediate for Organic Pigments: Serves as a key building block in the synthesis of high-performance azo pigments, particularly for yellows, oranges, and reds.
• Industrial Inks: Used in the formulation of solvent-based and paste inks for packaging, printing, and coding applications.
• Plastics and Masterbatch Coloring: Imparts color to polymers such as PVC, polyolefins, and engineering plastics during compounding.
• Coatings and Paints: Incorporated into industrial and decorative coatings to provide durable coloration with good light and weather fastness.
• Textile Dye Auxiliary: Can be utilized in specific dyeing processes for synthetic fibers.
• Research & Development: Employed in chemical research for developing new colorants and studying azo compound chemistry.

Basic Information

Product Name	Sodium 4-[(4-Butylphenyl)Azo]-3-Hydroxy-2-Naphthoate
CAS No.	34851-65-5
Molecular Formula	C21H17N2NaO3
Molecular Weight	368.36 g/mol
Synonyms	Sodium 3-Hydroxy-4-[(4-butylphenyl)azo]-2-naphthoate; C.I. Pigment Red 57:1 Precursor; 4-[(4-Butylphenyl)azo]-3-hydroxy-2-naphthoic acid sodium salt; Lithol Rubine BCA Sodium Salt; Sodium 4-(4-Butylphenylazo)-3-hydroxy-2-naphthoate; Azoic Coupling Component 5 Sodium Salt; Naphthol AS-BS Sodium Salt (related compound); BONA Salt (4-Butyl derivative)
EINECS	Contact for details

Quality Control

Our production of Sodium 4-[(4-Butylphenyl)Azo]-3-Hydroxy-2-Naphthoate adheres to stringent quality management protocols to ensure high purity and consistent performance. Every batch undergoes rigorous analytical testing, including chromatographic purity assays and identity confirmation. Certificates of Analysis (COA) detailing purity, impurity profile, and physical characteristics are available upon request to support your quality assurance and regulatory compliance 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 incompatible materials such as strong oxidizing agents. Due to its light-sensitive nature, prolonged exposure to direct light should be avoided to maintain product integrity.

Specification

Item	Specification
Appearance	Reddish-brown to dark red powder or crystalline solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility	Soluble in water; sparingly soluble in organic solvents

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