Description

Calcomine Orange 2Rs is a synthetic organic pigment belonging to the azo chemical class, identified by CAS No. 6598-63-6. This high-performance colorant is valued for its vibrant orange hue, excellent tinting strength, and good stability in various formulations. It is a critical raw material for manufacturers requiring consistent and reliable coloration. Key industries that utilize this pigment include plastics, coatings, inks, and synthetic fibers.

Application

The primary function of Calcomine Orange 2Rs is to provide durable and vivid coloration. Its properties make it suitable for a wide range of industrial applications:

• Plastics and Masterbatch Coloring: For coloring polyolefins (PP, PE), PVC, and engineering plastics, offering good heat stability and dispersion.
• Industrial Coatings and Paints: Used in solvent-based and water-based systems for automotive, industrial, and decorative finishes.
• Printing Inks: Formulated into flexographic, gravure, and offset inks for packaging and publications.
• Synthetic Fibers: Mass coloration (dope dyeing) of polyester, nylon, and polyacrylonitrile fibers.
• Rubber and Elastomers: Coloring of technical rubber goods and consumer products.
• Leather Finishing: Providing color for surface coatings on leather goods.

Basic Information

Product Name	Calcomine Orange 2Rs
CAS No.	6598-63-6
Molecular Formula	C16H10Cl2N4O4S
Molecular Weight	425.25 g/mol
Synonyms	Pigment Orange 34; C.I. 21115; 2,4-Dihydroxy-3-[(2-methoxy-5-nitrophenyl)azo]-N-(2-chlorophenyl)-3-oxo-2,3-dihydro-1,2,4-triazole-5-carboxamide; Dinitraniline Orange; Permanent Orange GTR; Vulcan Orange GR; Irgalite Orange R; C.I. Pigment Orange 34; Hansa Orange GR
EINECS	229-560-3

Quality Control

Our production of Calcomine Orange 2Rs adheres to stringent quality management systems 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 standards. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profiles, and physical properties is provided with every shipment to guarantee compliance with your specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Keep away from heat sources and incompatible materials. The product is light-sensitive and should be stored away from direct light exposure to prevent degradation.

Specification

Item	Specification
Appearance	Orange to reddish-orange powder
Identification (IR)	Conforms to standard
Color Strength	100 ± 5% (vs. Standard)
Hue	Within agreed tolerance
Assay (HPLC)	≥ 96.0%
Moisture Content	≤ 2.0%
Ash Content	≤ 1.0%
Water Soluble Matter	≤ 1.5%
Particle Size (D50)	0.2 - 0.5 μm
pH Value (10% Slurry)	6.0 - 8.0
Oil Absorption	40 - 60 g/100g

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