Description

Pigment Red 48:2 is a high-performance, calcium salt-based monoazo pigment renowned for its excellent color strength and durability. This versatile red pigment is engineered to provide superior heat stability, lightfastness, and solvent resistance, making it a critical component for demanding industrial applications. It is primarily sought after by manufacturers in the plastics, coatings, and printing ink industries who require consistent, vibrant, and reliable coloration for their products.

Application

• Plastics Coloring: Widely used for coloring polyolefins (PP, PE), PVC, and engineering plastics, offering excellent dispersion and heat stability during processing.
• Industrial Coatings: Imparts durable and weather-resistant red shades in automotive finishes, industrial maintenance paints, and coil coatings.
• Printing Inks: A key pigment for high-quality publication gravure, flexographic, and packaging inks, providing strong, clean shades.
• Masterbatch Production: Used as a high-strength colorant in the manufacture of color and additive masterbatches for the plastics industry.
• Synthetic Fibers: Employed in the mass coloration of synthetic fibers such as polypropylene and polyamide.
• Rubber and Elastomers: Suitable for coloring various rubber compounds and elastomeric materials.

Basic Information

Product Name	Pigment Red 48:2
CAS No.	7023-61-2
Molecular Formula	C18H11ClN2O6SCa
Molecular Weight	458.89 g/mol
Synonyms	Pigment Red 48:2; Calcium 4-[(5-chloro-4-methyl-2-sulfophenyl)azo]-3-hydroxy-2-naphthalenecarboxylate; C.I. 15865:2; Lithol Rubine BK; Permanent Red 2B; Red 48:2; 2B Red; Pigment Red 48 Calcium Salt; Naphthol Red; C.I. Pigment Red 48:2
EINECS	230-299-5

Quality Control

Our production of Pigment Red 48:2 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. We provide comprehensive Certificates of Analysis (COA) with each shipment, detailing the specific test results. Our quality systems are designed to meet the rigorous demands of global industrial supply chains.

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. Due to its light-sensitive nature, prolonged exposure to direct light should be avoided to maintain optimal color properties.

Specification

Item	Specification
Appearance	Red Powder
Color Strength	100 ± 5% (vs. Standard)
Hue	Within agreed tolerance
Particle Size (Residue on 45μm)	≤ 0.5%
Volatile Matter (at 105°C)	≤ 2.0%
pH Value (10% Aqueous Slurry)	6.0 - 8.0
Oil Absorption	40 - 60 g/100g
Heat Stability	≥ 200°C
Lightfastness	≥ 6-7 (ISO 105-B02)

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