Description

Calcium Disodium Bis[2-Chloro-5-[(2-Hydroxy-1-Naphthyl)Azo]-4-Sulphonatobenzoate] is a high-purity, complex azo dye intermediate and colorant salt. This compound is valued for its excellent color fastness and stability, making it a critical component in the production of high-performance pigments and dyes. It is primarily sought by manufacturers in the textile, ink, plastics, and specialty coatings industries for creating vibrant and durable colors.

Application

• Textile Dyeing and Printing: As a key intermediate for producing high-quality, wash-fast azo dyes for natural and synthetic fibers.
• Industrial Pigments: Used in the synthesis of organic pigments for plastics, masterbatches, and synthetic resins.
• Ink Manufacturing: Imparts stable coloration in various printing inks, including packaging and publication inks.
• Paints and Coatings: Serves as a colorant component in industrial and automotive coatings requiring light and weather resistance.
• Leather Finishing: Employed in dye formulations for coloring leather goods.
• Paper Coloring: Used in the production of colored papers and specialty paper products.
• Research & Development: Acts as a reference standard and intermediate in chemical research for novel colorant development.

Basic Information

Product Name	Calcium Disodium Bis[2-Chloro-5-[(2-Hydroxy-1-Naphthyl)Azo]-4-Sulphonatobenzoate]
CAS No.	5850-80-6
Molecular Formula	C34H18CaCl2N4Na2O14S2
Molecular Weight	951.68 g/mol
Synonyms	Calcium 2,2'-[(1-Hydroxy-2-naphthyl)azo]bis[5-chloro-4-sulfobenzoate], disodium salt; C.I. Pigment Red 57:1 Calcium Lake; Calcium 4-[(2-hydroxy-1-naphthyl)azo]-3-chlorobenzenesulfonate; Calcium Lithol Rubine BCA; Calcium salt of Lithol Rubine; Pigment Red 57:1; Calcium disodium 2-chloro-5-[(2-hydroxy-1-naphthyl)azo]-4-sulfobenzoate; C.I. 15850:1
EINECS	227-455-1

Quality Control

Our production of Calcium Disodium Bis[2-Chloro-5-[(2-Hydroxy-1-Naphthyl)Azo]-4-Sulphonatobenzoate] adheres to stringent quality control protocols to ensure batch-to-batch consistency and performance. Quality is verified through advanced analytical techniques including HPLC, spectrophotometry, and titration. A comprehensive Certificate of Analysis (COA) detailing purity, strength, and impurity profiles is provided with every shipment to guarantee compliance with your specifications.

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). This product is hygroscopic (moisture-sensitive); therefore, the container must be kept tightly sealed in a low-humidity environment to prevent degradation. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Red to bluish-red powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 95.0%
Color Strength	100 ± 5% (vs. Standard)
Moisture Content	≤ 5.0%
Ash Content	≤ 30.0%
Water Solubility	Slightly 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.