Description

Pigment Red 173 is a high-performance, synthetic organic pigment belonging to the azo chemical class. This pigment is valued for its excellent color strength, good lightfastness, and strong solvent resistance, making it a reliable choice for demanding coloration applications. It is primarily used by manufacturers in the coatings, plastics, and printing ink industries seeking vibrant, durable red shades. Consistent quality and batch-to-batch uniformity are critical for ensuring final product performance, which our supply chain is committed to delivering.

Application

• Industrial Coatings: For automotive finishes, industrial machinery paints, and coil coatings requiring durability and weather resistance.
• Plastics Coloring: Masterbatch and compound production for coloring polyolefins (PP, PE), PVC, and engineering plastics.
• Printing Inks: Formulation of solvent-based and UV-curable inks for packaging, publication, and decorative printing.
• Architectural Paints: Providing stable red hues for interior and exterior decorative paints and varnishes.
• Specialty Applications: Used in the coloration of synthetic fibers, leather finishes, and artist's colors.

Basic Information

Product Name	Pigment Red 173
CAS No.	12227-77-9
Molecular Formula	C24H20N4O4
Molecular Weight	428.44 g/mol
Synonyms	C.I. Pigment Red 173; Pigment Red 173; C.I. 12477; 2,9-Dichloro-5,6,11,12-tetraphenylnaphthacene; Naphthacene, 2,9-dichloro-5,6,11,12-tetraphenyl-; Tetraphenyldichloronaphthacene; PR 173; Red 173 Pigment
EINECS	Contact for details

Quality Control

Our Pigment Red 173 is manufactured under a strict quality management system to ensure consistent performance. Each batch is tested against key parameters including color strength, hue, particle size distribution, and rheological properties. While produced to general industrial standards, specifications can be adjusted to meet specific customer requirements. A Certificate of Analysis (COA) documenting these quality checks is provided with every shipment.

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 color stability.

Specification

Item	Specification
Appearance	Red Powder
Color Strength	95 - 105% (vs. Standard)
Hue	Conforms to Standard
Particle Size (D50)	< 5.0 µm
Oil Absorption	40 - 60 g/100g
Volatile Matter	< 2.0 %
Lightfastness	≥ 6 (ISO 105-B02)
Heat Resistance	≥ 200 °C

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