Description

Special Red 3R is a high-performance synthetic organic pigment belonging to the azo class, identified by CAS No. 6483-64-3. This pigment is valued for its vibrant, durable red hue and excellent color fastness properties, making it a critical component for demanding coloration applications. It is primarily sought after by manufacturers in the coatings, plastics, and printing ink industries who require consistent, high-quality pigments for their products.

Application

• Industrial Coatings and Paints: Used in automotive, architectural, and industrial finishes for its weather resistance and color stability.
• Plastics and Masterbatch Coloring: Imparts a strong, heat-stable red color to polymers like PVC, polyolefins, and engineering plastics.
• Printing Inks: A key pigment for high-quality publication gravure, flexographic, and packaging inks requiring good printability and gloss.
• Textile Printing and Dyeing: Employed in pigment printing systems for fabrics, offering good wash and rub fastness.
• Specialty Applications: Suitable for coloring artists' materials, leather finishes, and other specialty products where a vivid red is needed.

Basic Information

Product Name	Special Red 3R
CAS No.	6483-64-3
Molecular Formula	C25H20N4O4
Molecular Weight	440.45 g/mol
Synonyms	C.I. Pigment Red 23; C.I. 12355; Permanent Red 3R; Pigment Red 23; 2-Naphthalenecarboxamide, N-(2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)-3-hydroxy-4-[(2-methyl-5-nitrophenyl)azo]-; Permanent Red FRR; Red 3R; Azo Red 3R
EINECS	229-328-4

Quality Control

Our Special Red 3R is manufactured under a strict quality management system to ensure batch-to-batch consistency and performance. Key parameters such as color strength, hue, particle size distribution, and chemical purity are rigorously tested against established specifications. 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). 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%
Ash Content	≤ 1.0%
Particle Size (Residue on 45μm)	≤ 5.0%
Oil Absorption	40 - 60 g/100g
Light Fastness	≥ 6 (ISO 105-B02)
Heat Resistance	≥ 180°C

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