Description

Calcium 4-[(4-Ethoxy-2-Sulphonatophenyl)Azo]-3-Hydroxy-2-Naphthoate is a high-purity azo dye intermediate, specifically a calcium salt of a naphthol derivative. This compound is valued for its excellent colorant properties and stability, making it a critical component in the synthesis of high-performance pigments and dyes. It is primarily sought after by manufacturers in the pigments, inks, coatings, and specialty plastics industries for producing vivid and durable colors.

Application

• Pigment Manufacturing: A key intermediate for producing high-performance organic pigments, particularly for automotive and industrial coatings.
• Ink Formulation: Used in the synthesis of colorants for printing inks, including packaging and publication inks, requiring good lightfastness.
• Plastics and Polymers: Imparts color to engineering plastics and synthetic fibers where thermal stability is required.
• Textile Dyes: Serves as a precursor for dyes used in coloring synthetic fabrics.
• Specialty Coatings: Employed in creating colored coatings for industrial applications, including metal finishes.
• Research & Development: Used as a standard or reagent in chemical research for developing new colorant technologies.

Basic Information

Product Name	Calcium 4-[(4-Ethoxy-2-Sulphonatophenyl)Azo]-3-Hydroxy-2-Naphthoate
CAS No.	84696-58-2
Molecular Formula	C19H14N2O7S.Ca (or C38H26CaN4O14S2)
Molecular Weight	Approx. 858.84 g/mol
Synonyms	Calcium 4-[(4-ethoxy-2-sulfophenyl)azo]-3-hydroxy-2-naphthalenecarboxylate; C.I. Pigment Red 57:1 Calcium Salt; Calcium Lithol Rubine BCA; Calcium 3-Hydroxy-4-[(2-methoxy-5-sulfophenyl)azo]-2-naphthoate (variant); Calcium 4-(4-Ethoxy-2-sulfonatophenylazo)-3-hydroxy-2-naphthoate; Calcium 4-(4-Ethoxy-2-sulfophenylazo)-3-hydroxy-2-naphthoate; Calcium Salt of Lithol Rubine; Pigment Red 57:1 (Calcium Lake).
EINECS	Contact for details

Quality Control

Our production of Calcium 4-[(4-Ethoxy-2-Sulphonatophenyl)Azo]-3-Hydroxy-2-Naphthoate adheres to stringent quality protocols to ensure batch-to-batch consistency and purity. The material is tested against rigorous in-house specifications, which typically include parameters for assay, hue, strength, and impurity profile. A Certificate of Analysis (COA) detailing these results is provided with every shipment to guarantee compliance with your technical requirements.

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). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent absorption of atmospheric moisture, which can affect product performance.

Specification

Item	Specification
Appearance	Red to bluish-red powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 5.0%
Sulfated Ash	Conforms
Heavy Metals (as Pb)	≤ 20 ppm
Solubility	Practically insoluble in water; soluble in alkaline solutions

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