Description

Sirius Grey Gb is a high-performance, synthetic organic pigment widely recognized for its excellent color strength and durability. This product is engineered to deliver superior performance in demanding applications where color consistency and stability are critical. It is an essential component for manufacturers in the coatings, plastics, and specialty inks industries seeking reliable and vibrant grey coloration.

Application

• Industrial Coatings: Used in automotive, coil, and powder coatings for its excellent weather fastness and chemical resistance.
• Plastics Coloring: Imparts stable and uniform grey shades to engineering plastics, masterbatches, and synthetic fibers.
• Printing Inks: A key pigment for high-quality packaging, publication, and specialty inks requiring good rheology and printability.
• Construction Materials: Incorporated into concrete, mortar, and other building materials for permanent coloration.
• Artists' Colors: Used in the formulation of professional-grade artists' paints and pastels.

Basic Information

Product Name	Sirius Grey Gb
CAS No.	6409-87-6
Molecular Formula	C32H30N8O6
Molecular Weight	598.63 g/mol
Synonyms	Pigment Grey Gb; C.I. Pigment Black 7 (related azo class); Dioxazine Grey; Carbazole Dioxazine Pigment; Permanent Grey Gb; Fast Grey Gb; Azo Condensation Pigment Grey
EINECS	229-074-8

Quality Control

Our Sirius Grey Gb is manufactured under a strict quality management system. Every batch undergoes comprehensive testing for color strength, hue, particle size distribution, and chemical purity to ensure it meets the stringent requirements of industrial applications. Certificates of Analysis (COA) detailing all specifications 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.

Specification

Item	Specification
Appearance	Grey Powder
Identification (IR)	Conforms to Standard
Color Strength	100 ± 5% (vs. Std.)
Hue	Matches Standard
Purity (HPLC)	≥ 96.0%
Moisture Content	≤ 2.0%
Ash Content	≤ 1.0%
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.