Description

4-[(5-Chloro-4-Methyl-2-Sulphophenyl)Azo]-3-Hydroxy-2-Naphthoic Acid, Calcium Strontium Salt is a high-performance, organometallic azo pigment intermediate. This compound is valued for its excellent color strength and stability, making it a critical component in the synthesis of premium pigments. It is primarily sought after by manufacturers in the coatings, plastics, and specialty inks industries for producing durable and vibrant colors.

Application

• Primary intermediate for the synthesis of high-performance azo pigments and lakes.
• Manufacturing of industrial coatings requiring excellent lightfastness and weather resistance.
• Production of colorants for plastics and synthetic fibers.
• Key component in formulating printing inks for packaging and publications.
• Used in the coloration of masterbatches for consistent color dispersion.
• Potential use in specialty applications such as artist colors and security inks.

Basic Information

Product Name	4-[(5-Chloro-4-Methyl-2-Sulphophenyl)Azo]-3-Hydroxy-2-Naphthoic Acid, Calcium Strontium Salt
CAS No.	85005-85-2
Molecular Formula	C18H11ClN2O6S·1/2Ca·1/2Sr
Molecular Weight	Contact for details
Synonyms	Pigment Red 52:2; C.I. 15860:2; Calcium strontium salt of 4-[(5-chloro-4-methyl-2-sulfophenyl)azo]-3-hydroxy-2-naphthoic acid; 5-Chloro-4-methyl-2-[(3-hydroxy-2-naphthoyl)azo]benzenesulfonic acid, calcium strontium salt; Azo Pigment Red 52:2; Naphthol Red 52:2; C.I. Pigment Red 52:2; Lake Red C (Calcium Strontium Salt)
EINECS	Contact for details

Quality Control

Our production of 4-[(5-Chloro-4-Methyl-2-Sulphophenyl)Azo]-3-Hydroxy-2-Naphthoic Acid, Calcium Strontium Salt adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing to ensure consistent purity, color value, and chemical composition. Certificates of Analysis (COA) documenting key parameters 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, and well-ventilated area at room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed when not in use to prevent absorption of atmospheric moisture, which can affect product performance.

Specification

Item	Specification
Appearance	Red Powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 95.0%
Loss on Drying	≤ 2.0%
Sulfated Ash	Contact for details
Heavy Metals (as Pb)	≤ 20 ppm
Solubility	Practically insoluble in water; soluble in concentrated sulfuric acid

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