Description

Calcium 3-Hydroxy-4-[[1-(Sulphonatomethyl)-2-Naphthyl]Azo]-2-Naphthoate is a high-purity, water-soluble azo dye complex valued for its excellent color strength and stability. This compound is engineered to deliver consistent, vibrant coloration in demanding industrial applications where performance and reliability are critical. It is primarily utilized by manufacturers in the textile, ink, and specialty coatings industries seeking a robust and compliant pigmentary solution.

Application

• Textile Dyeing and Printing: As a key colorant for dyeing natural and synthetic fibers, providing good wash and light fastness.
• Industrial Inks: Formulation of high-performance inks for packaging, security printing, and specialty marking.
• Paints and Coatings: Used in the production of decorative and industrial coatings requiring specific hue and durability.
• Paper Coloration: Application in the surface coloring and coating of specialty papers and boards.
• Plastics and Masterbatch: Incorporation into polymer matrices for the mass coloration of plastics.
• Leather Finishing: Used in dyes and finishes for leather goods to achieve uniform and lasting color.

Basic Information

Product Name	Calcium 3-Hydroxy-4-[[1-(Sulphonatomethyl)-2-Naphthyl]Azo]-2-Naphthoate
CAS No.	29779-09-7
Molecular Formula	C22H14CaN2O7S
Molecular Weight	490.50 g/mol
Synonyms	Calcium 3-hydroxy-4-[(1-sulfomethyl-2-naphthyl)azo]-2-naphthoate; C.I. Pigment Red 57:1; Lithol Rubine B Ca; Permanent Carmine FBB; Permanent Red FGR; Pigment Red 57:1; Calcium Lithol Rubine; 2-Naphthalenecarboxylic acid, 3-hydroxy-4-[(1-sulfomethyl-2-naphthyl)azo]-, calcium salt (1:1)
EINECS	249-862-5

Quality Control

Our production of Calcium 3-Hydroxy-4-[[1-(Sulphonatomethyl)-2-Naphthyl]Azo]-2-Naphthoate adheres to stringent quality protocols to ensure batch-to-batch consistency and performance. Each lot is tested against key parameters for color value, purity, and physical properties. Certificates of Analysis (COA) documenting these results 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, well-ventilated area at a controlled room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); keep the container tightly sealed when not in use to prevent absorption of atmospheric moisture, which can affect performance.

Specification

Item	Specification
Appearance	Red powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 95.0%
Color Strength	100 ± 5% (vs. Standard)
Moisture Content	≤ 5.0%
Ash Content	Contact for details
Water Solubility	Freely soluble
Heavy Metals (as Pb)	≤ 20 ppm

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