Pigment Blue 28 CAS NO.1345-16-0

Product name	Pigment Blue 28
CAS No.	1345-16-0
EINECS	215-610-4
C.I. No.	C.I. 77346
Appearance	Reddish shade blue powder
Chemical Group	Cobalt Aluminate Spinel (Co-AI-O)
Type	Inorganic blue pigment; Composite inorganic color pigment (CICP)

product details

Product details

Overview

Pigment Blue 28 (Cobalt Blue) is a premium spinel-type composite inorganic pigment synthesized by high-temperature calcination. It features excellent light, heat and weather resistance, high NIR reflectivity and good dispersibility. Widely used in coatings, plastics, building materials, ceramics and glass.

Our strict quality control ensures consistent batch performance for various industrial coloring needs.

Physical And Chemical Properties

- Odor: Odorless
- Density: 4.2 g/cm³
- Oil Absorption: 16-26 g/100g
- pH Value: 7.5-9.5

- Heat Resistance: 1000 ℃
- Light Fastness: 8 (1-8 scale)
- Weather Resistance: 5 (1-5 scale)
- Acid Resistance: 5 (1-5 scale)
- Alkali Resistance: 5 (1-5 scale)
- Solvent Resistance: 5 (1-5 scale)
- Cement Resistance: 5 (1-5 scale)
- Migration Resistance: 5 (1-5 scale)
- Hue Characteristic: Vivid reddish shade blue

Advantages

1. Eco-friendly & Non-toxic：Free of harmful substances, compliant with international environmental standards. Compared with blue pigments containing toxins or harmful impurities, it is safer to use and suitable for sensitive application scenarios.

2. Strong Stability：Light fastness, weather resistance, acid and alkali resistance, and solvent resistance all reach excellent grades. It is not easy to fade during long-term outdoor use and adapting to high-temperature processing and application environments.

3. Unique Function：With high infrared reflection performance, it is a "cool pigment" that can reflect solar thermal energy and reduce surface temperature. It adapts to functional needs such as energy saving and camouflage.

4. Wide Compatibility：Uniform particles are easy to disperse, compatible with most polymers, resin systems, coatings and ink formulations, without bleeding or migration, and has good dimensional stability.

Application

Coatings Field
(1) Exterior architectural coatings, roof thermal insulation coatings, fluorocarbon coatings, powder coatings, coil coatings, etc.;
(2) Automotive coatings, aerospace coatings, marine protective coatings, military camouflage coatings and other special coatings;
(3) Raw materials for high-temperature equipment protective coatings and infrared reflective energy-saving coatings.

Plastics Field
(1) Coloring of engineering plastics (ABS, PC, PA, etc.);
(2) General plastics (PVC, PE, PP, etc.);
(3) Fluoroplastics, silicone and other special plastics;
(4) Masterbatches, injection molded products, plastic films and other products.

Ceramics and Glass Field
(1) Overglaze and underglaze coloring for architectural ceramics, daily-use ceramics and engineering ceramics;
(2) Coloring of enamel products (industrial enamel, daily-use enamel), colored glass and functional glass.

Building Materials Field
(1) Colored cement, colored concrete, colored mortar, sintered colored sand and other building materials;
(2) Roof energy-saving materials.

Other Fields
(1) High-end printing inks (water-based, solvent-based, UV-curable, etc.);
(2) Artistic painting pigments (oil painting, watercolor, etc.);
(3) Cultural relic restoration, ancient book binding and other scenarios requiring high stability;
(4) Infrared identification, sensing systems and other special scenarios.

CONLUSION

Pigment Blue 28 is an ideal coloring material for high-end industrial fields such as coatings, plastics, building materials, ceramics and glass, especially for scenarios with high requirements for heat resistance, weather resistance and functional infrared reflection.

Contact our team today for sample requests, technical specifications and bulk order inquiries—we’re committed to providing efficient and customized industrial coloring solutions for you.