Description

Naphthgeranine B CAS NO 137109-44-5 is a specialized organic dye intermediate belonging to the naphthalene derivative family. This compound is valued for its role as a key precursor in the synthesis of high-performance dyes and pigments, offering excellent color fastness and stability. It is primarily required by manufacturers in the textile, ink, and specialty chemical industries for producing vivid and durable colorants.

Application

• Primary intermediate for the synthesis of azo dyes and pigments used in textile coloring.
• Key raw material in the production of printing inks for packaging and publications.
• Used in the manufacture of specialty colorants for plastics and polymers.
• Employed in research and development of novel organic photoconductors (OPCs) for imaging applications.
• Intermediate for functional dyes used in biological staining and analytical chemistry.
• Potential use in the synthesis of liquid crystal display (LCD) color filters.

Basic Information

Product Name	Naphthgeranine B
CAS No.	137109-44-5
Molecular Formula	Contact for details
Molecular Weight	Contact for details
Synonyms	Naphthgeranine B; 137109-44-5; C.I. Acid Orange 156; Naphthol AS-G; 3-Hydroxy-N-(4-methoxyphenyl)-2-naphthamide; N-(4-Methoxyphenyl)-3-hydroxy-2-naphthamide; Azoic Coupling Component 5; Azoic Diazo Component 5
EINECS	Contact for details

Quality Control

Our Naphthgeranine B is produced under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure it meets the high-purity standards required for sensitive synthesis applications. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are available upon request to support your quality assurance protocols.

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.

Specification

Item	Specification
Appearance	Yellow to orange powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 1.0%
Residue on Ignition	≤ 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.