Description

Pigment Red 53:1 is a high-performance, precipitated calcium salt azo pigment renowned for its bright, clean red shade and excellent lightfastness. This pigment is a critical component for achieving durable and vibrant red coloration in a wide range of industrial applications. It is extensively used by manufacturers in the plastics, printing ink, coatings, and synthetic fiber industries to ensure consistent, high-quality color results.

Application

The primary value of Pigment Red 53:1 lies in its versatility and stability across different media. Its key applications include:

• Printing Inks: A staple for offset, flexographic, and gravure inks, especially for packaging, labels, and publications requiring a strong, opaque red.
• Plastics Coloring: Used for the mass coloration of polyolefins (PP, PE), PVC, and other polymers, offering good heat stability and dispersion.
• Industrial Coatings and Paints: Imparts a durable red color to architectural paints, industrial finishes, and emulsion paints.
• Synthetic Fibers: Employed in the spin dyeing of viscose and other synthetic fibers to create colorfast textiles.
• Rubber and Latex Products: Provides coloration for technical rubber goods, footwear, and other latex-based items.
• Paper Coatings and Specialty Papers: Used in coated papers and decorative laminates where color consistency is paramount.

Basic Information

Item	Detail
Product Name	Pigment Red 53:1
CAS No.	5160-02-1
Molecular Formula	C34H24Cl2N4O4S2·1/2Ca
Molecular Weight	~ 888.8 g/mol
Synonyms	C.I. Pigment Red 53:1; Calcium 4-[(5-chloro-4-methyl-2-sulfophenyl)azo]-3-hydroxy-2-naphthalenecarboxylate; Lake Red C; Permanent Red F5RK; Lithol Rubine; Pigment Red 53 Calcium Lake; Brilliant Lake Red R; C.I. 15585:1
EINECS	225-921-5

Quality Control

Our production of Pigment Red 53:1 adheres to stringent quality management protocols to ensure batch-to-batch consistency and performance reliability. Every lot is tested against key parameters including color strength, hue, particle size distribution, and chemical purity. 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, and well-ventilated area at room temperature (15-25°C). Keep away from incompatible materials and sources of ignition. For long-term storage, ensure the original packaging remains sealed to prevent moisture absorption and contamination.

Specification

Item	Specification
Appearance	Red Powder
Identification (IR)	Conforms
Color Strength	100 ± 5% (vs. Standard)
Hue	Within agreed tolerance
Moisture Content	≤ 2.0%
Water Soluble Matter	≤ 1.5%
Residue on Sieve (45μm)	≤ 0.5%
Lightfastness	≥ 6-7 (ISO 105-B02)
Heat Stability	≥ 200°C

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