Description

Naphthol As-Gr Phosphate CAS NO 2616-73-1 is a specialized phosphate ester derivative of the Naphthol AS-GR azo dye intermediate. This compound is valued for its role as a key coupling component in the synthesis of high-performance organic pigments and dyes, particularly those requiring specific solubility or reactivity profiles. It is primarily utilized by manufacturers in the pigments, dyes, and specialty chemical industries for producing colors with excellent fastness properties.

Application

• Primary coupling component for the synthesis of azo pigments and dyes.
• Manufacture of high-performance organic pigments used in inks, plastics, and coatings.
• Production of specialized dyes for textiles and leather finishing.
• Intermediate in the development of functional colorants with specific chemical resistances.
• Research and development of novel chromogenic materials in analytical chemistry.
• Potential use as a biochemical reagent in histochemical staining procedures.

Basic Information

Product Name	Naphthol As-Gr Phosphate
CAS No.	2616-73-1
Molecular Formula	C17H13NO6P
Molecular Weight	358.26 g/mol
Synonyms	3-Hydroxy-4-[(2-methoxyphenyl)azo]-2-naphthamide phosphate; Naphthol AS-GR phosphate ester; Azoic Coupling Component 13; C.I. Azoic Coupling Component 13; Naphthol AS-GR phosphoric acid ester; 2-Naphthamide, 3-hydroxy-4-[(2-methoxyphenyl)azo]-, phosphate (1:1); Phosphoric acid, mono[3-hydroxy-4-[(2-methoxyphenyl)azo]-2-naphthoyl] ester
EINECS	220-045-9

Quality Control

Our Naphthol As-Gr Phosphate is manufactured under strict quality management protocols. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise specifications for dye and pigment synthesis. Certificates of Analysis (COA) detailing purity, assay, and impurity profiles are provided with every shipment to guarantee batch-to-batch consistency and performance reliability.

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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent degradation from atmospheric moisture.

Specification

Item	Specification
Appearance	Off-white to light brown powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Solubility	Soluble in alkaline aqueous solutions
Heavy Metals (as Pb)	≤ 20 ppm

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