Description

C. I. Pigment Orange 18 is a high-performance, synthetic organic pigment belonging to the diarylide yellow/orange class, identified by CAS NO 1325-14-0. It is valued for its excellent color strength, good lightfastness, and strong solvent resistance, making it a reliable and cost-effective coloring agent. This pigment is primarily needed by manufacturers in the plastics, inks, and coatings industries seeking vibrant, durable orange hues for their products.

Application

• Plastics Coloring: For coloring polyolefins (PP, PE), PVC, and engineering plastics, offering good dispersion and heat stability.
• Printing Inks: Used in solvent-based, water-based, and offset printing inks for packaging, publications, and textiles.
• Industrial Coatings: Imparts durable color to architectural paints, automotive refinishes, and industrial maintenance coatings.
• Masterbatch Production: A key component in the manufacture of color concentrates and compounds for the plastics industry.
• Synthetic Fibers: For mass coloration (dope dyeing) of fibers, providing excellent wash and light fastness.
• Rubber and Elastomers: Used to color various rubber products, benefiting from its chemical resistance.

Basic Information

Product Name	C. I. Pigment Orange 18
CAS No.	1325-14-0
Molecular Formula	C32H26Cl2N6O2
Molecular Weight	621.50 g/mol
Synonyms	Pigment Orange 18; Diarylide Orange; C.I. 21110; Benzidine Orange; Pyrazolone Orange; 3,3'-[(3,3'-Dichloro[1,1'-biphenyl]-4,4'-diyl)bis(azo)]bis[4-methyl-2,4-dihydro-5-methyl-2-phenyl-3H-pyrazol-3-one]; Permanent Orange G; Vulcan Orange G; AAA Orange. Contact for additional trade names.
EINECS	215-366-4

Quality Control

Our C. I. Pigment Orange 18 is produced under a stringent quality management system. Each batch is tested against rigorous in-house specifications for critical parameters such as color strength, hue, particle size distribution, and chemical purity to ensure batch-to-batch consistency and performance. Certificates of Analysis (COA) detailing these results are available upon request.

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 strong oxidizing agents. Under these conditions, the product has excellent shelf stability.

Specification

Item	Specification
Appearance	Orange Powder
Color Strength	95 - 105% (vs. Standard)
Hue	Conforms to Standard
Particle Size (D50)	< 1.0 μm
Volatile Matter (105°C)	< 2.0 %
Water Soluble Matter	< 1.5 %
pH Value (10% Aqueous Slurry)	6.0 - 8.0
Lightfastness (1-8)	≥ 6
Heat Resistance (Plastics)	≥ 200°C

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