Description

Pigment Orange 5 is a synthetic organic pigment belonging to the diarylide yellow/orange class, known for its bright, clean orange hue. This high-performance colorant is valued for its excellent tinting strength, good lightfastness, and strong solvent resistance, making it a reliable choice for demanding industrial applications. It is primarily used by manufacturers in the plastics, coatings, and printing ink industries seeking consistent and durable coloration.

Application

• Plastics Coloring: Widely used for coloring polyolefins (PP, PE), PVC, and engineering plastics, offering good heat stability and dispersion.
• Industrial Coatings: Imparts durable orange color to air-dry and baked industrial finishes, including automotive refinish paints and machinery coatings.
• Printing Inks: A key pigment for producing vibrant orange shades in various printing inks, including packaging and publication gravure inks.
• Masterbatch Production: Used as a concentrated colorant in carrier resins to create color masterbatches for simplified plastics processing.
• Textile Printing: Employed in pigment printing pastes for textiles, providing good wash and rub fastness.
• Specialty Applications: Suitable for coloring synthetic fibers, leather finishes, and other specialty materials requiring an opaque orange pigment.

Basic Information

Product Name	Pigment Orange 5
CAS No.	3468-63-1
Molecular Formula	C16H10N4O5
Molecular Weight	338.28 g/mol
Synonyms	Pigment Orange 5; C.I. Pigment Orange 5; Diarylide Orange; Benzidine Orange; 3,3'-Dichlorobenzidine-4,4'-bis(azo-2',4'-dihydroxybenzene); Permanent Orange; Vulcan Orange; 1,2-Bis(2,4-dihydroxyphenylazo)-3,3'-dichlorobenzene; PO5
EINECS	222-426-1

Quality Control

Our production of Pigment Orange 5 adheres to stringent quality management protocols to ensure batch-to-batch consistency in color strength, shade, and physical properties. Key parameters such as purity, particle size distribution, and specific performance characteristics are rigorously tested. A Certificate of Analysis (COA) detailing these specifications is provided with every shipment to guarantee product integrity and support your quality assurance processes.

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 contamination and moisture absorption.

Specification

Item	Specification
Appearance	Orange to reddish-orange powder
Color Strength	95 - 105% (vs. Standard)
Hue	Within agreed tolerance
Purity (HPLC)	≥ 95.0%
Volatile Matter (105°C)	≤ 2.0%
Ash Content	≤ 1.0%
Particle Size (D50)	0.2 - 0.5 µm
Oil Absorption	40 - 60 g/100g
pH Value (10% Aqueous Slurry)	6.0 - 8.0
Lightfastness (1/3 SD)	≥ 6 (Blue Scale)
Heat Stability (Plastics)	≥ 200°C

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