Description

Calcium 3-Hydroxy-4-[(4-Methyl-2-Sulphonatophenyl)Azo]-2-Naphthoate is a high-purity azo dye complex salt, valued for its excellent color stability and compatibility in demanding formulations. This compound is essential for industries requiring precise and durable pigmentation. It is primarily utilized in the manufacturing of specialized inks, coatings, and colorants where consistent quality and performance are critical.

Application

• Primary colorant for high-performance industrial inks, including those for packaging and security printing.
• Key pigment component in specialized coatings and paints requiring lightfastness and chemical resistance.
• Manufacturing of colorants for plastics and synthetic polymers.
• Used in the formulation of textile dyes for synthetic fibers.
• Potential use as a colorimetric reagent or indicator in select analytical chemistry applications.
• Coloring agent for specialty paper products and decorative laminates.

Basic Information

Product Name	Calcium 3-Hydroxy-4-[(4-Methyl-2-Sulphonatophenyl)Azo]-2-Naphthoate
CAS No.	5281-09-4
Molecular Formula	C18H12CaN2O6S
Molecular Weight	424.44 g/mol
Synonyms	Calcium 3-Hydroxy-4-[(4-Methyl-2-Sulfophenyl)Azo]-2-Naphthoate; C.I. Pigment Red 57:1; Calcium Red 2B; Lithol Rubine B Ca; Permanent Red FGR; 2-Naphthalenecarboxylic acid, 3-hydroxy-4-[(4-methyl-2-sulfophenyl)azo]-, calcium salt (1:1); Calcium Lithol Rubine; C.I. 15850:1
EINECS	226-109-5

Quality Control

Our production of Calcium 3-Hydroxy-4-[(4-Methyl-2-Sulphonatophenyl)Azo]-2-Naphthoate adheres to stringent quality management protocols to ensure batch-to-batch consistency and purity. The product is manufactured in compliance with ISO 9001 standards, and key parameters such as color strength, shade, and impurity profiles are rigorously tested. A comprehensive Certificate of Analysis (COA) detailing purity, physical properties, and performance characteristics is provided with every shipment.

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). Keep away from incompatible materials such as strong oxidizing agents. The container must be kept tightly sealed to protect the product from moisture and atmospheric contamination.

Specification

Item	Specification
Appearance	Red powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 96.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	15.0 - 20.0%
Water-soluble Matter	≤ 1.5%
Heavy Metals (as Pb)	≤ 20 ppm
Arsenic (As)	≤ 3 ppm

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