Description

Benzenesulfonic Acid, 5-Chloro-4-Ethyl-2-(2-Hydroxy-1-Naphthalenyl)Azo-, Calcium Salt (2:1) is a high-purity azo dye intermediate and pigment of significant industrial importance. This compound is valued for its role in producing vivid, stable colors and its utility in advanced material synthesis. It is primarily required by manufacturers in the pigments and dyes, specialty chemicals, and advanced materials sectors for creating high-performance colorants and functional additives.

Application

• Pigment and Dye Manufacturing: Serves as a key intermediate for producing high-quality, light-stable organic pigments and dyes.
• Industrial Colorants: Used in the formulation of colorants for plastics, inks, and coatings, providing excellent tinting strength.
• Functional Additives: Employed in the synthesis of specialty chemicals where its specific molecular structure imparts desired properties.
• Research & Development: Utilized in chemical R&D for developing new chromophoric systems and advanced material applications.
• Textile Industry: Can be applied in the synthesis of dyes for synthetic fibers, offering good fastness properties.

Basic Information

Product Name	Benzenesulfonic Acid, 5-Chloro-4-Ethyl-2-(2-Hydroxy-1-Naphthalenyl)Azo-, Calcium Salt (2:1)
CAS No.	67801-03-0
Molecular Formula	C36H26CaCl2N4O6S2 (or similar based on 2:1 salt structure)
Molecular Weight	Contact for details
Synonyms	5-Chloro-4-ethyl-2-[(2-hydroxy-1-naphthyl)azo]benzenesulfonic acid calcium salt; C.I. Pigment Red 48:2 (Calcium Salt); Calcium 5-chloro-4-ethyl-2-[(2-hydroxy-1-naphthalenyl)azo]benzenesulfonate; 2-Naphthalenol, 1-[(5-chloro-4-ethyl-2-sulfophenyl)azo]-, calcium salt (2:1); C.I. 15865:2; Pigment Red 48:2; Permanent Red 2B (Calcium Lake); Lithol Rubine BK Calcium Salt
EINECS	Contact for details

Quality Control

Our production of Benzenesulfonic Acid, 5-Chloro-4-Ethyl-2-(2-Hydroxy-1-Naphthalenyl)Azo-, Calcium Salt (2:1) adheres to stringent quality management protocols to ensure batch-to-batch consistency and purity. Each lot undergoes comprehensive analytical testing, including assay, identification, and impurity profiling. Certificates of Analysis (COA) documenting full specifications 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 room temperature (15-25°C). Keep away from incompatible materials. Due to its light-sensitive nature, containers should be opaque or stored in darkness.

Specification

Item	Specification
Appearance	Red powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Heavy Metals (as Pb)	≤ 20 ppm
Solubility	Contact for details

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