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Pigment Blue 28 (C.I.77436) CICP For Blue Coating
FULLN CHEMICAL Pigment Blue 28 (C.I.77436) CICP For Blue Coating is also named king blue, thenard blue or cobalt ultramarine, is a very bright blue. Cobalt Blue is a mixed metal oxide pigment of spinel pattern. It has excellent heat resistance, light-fastness, acid resistance, alkali resistance and non-toxic, so it can be used in the area which required high heat resistance, excellent color stability. It can be use for fluorocarbon coatings, heat resistant coatings, plastics and so on.
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Pigment Blue 28 (C.I.77436) CICP For Blue Coating
Cobalt Blue PB28 is a vibrant, inorganic pigment that is widely renowned for its rich, intense blue color and excellent stability. Also known by its chemical name Cobalt Aluminate (CoAl₂O₄), this pigment is commonly used in a variety of applications, ranging from art materials to industrial coatings. With its superior color strength and exceptional environmental and safety characteristics, Cobalt Blue has established itself as a premium choice for those seeking high-performance blue hues.
FU-C554 Pigment Blue 28, Cobalt Blue, the main composition of cobalt blue is CoO, Al2O3, or known as Cobalt Aluminate [CoAl2O4]. FU-C554 has a bright tone, easy to disperse. Cobalt blue has excellent heat resistance, weather resistance, acid and alkali resistance, resistance to various solvents, and cobalt blue has good covering. Suitable for most coating systems, especially for high temperature resistant coatings.
Technical Specification
P.B.28 Technical Specification
CAS NO: 1345-16-0
Composition: Co-Al
Temperature Resistance: 1200℃
Moisture: ≤0.3%
400 Mesh Sieve Residue: ≤0.02
Average particle size D50(µm)≤1.5
PH value: 7~10
Oil Absorption g/100g: 20~35
Conductivity µs/cm: ≤200
Weather Resistance: 5
Light Resistance: 7~8
Acid and Alkali Resistance: 5
Environmental Benefits and Safety
Pigment Blue 28 (C.I.77436) CICP For Blue Coating
Cobalt Blue PB28 is an inorganic pigment, which generally offers greater stability and environmental safety compared to organic pigments. Unlike many organic dyes, Cobalt Blue is non-toxic, lightfast, and resistant to chemical degradation, making it an environmentally friendly choice. It is free from hazardous substances such as heavy metals like lead or cadmium, which are commonly found in other pigments.
Furthermore, Cobalt Blue PB28 is eco-friendly due to its low environmental impact during production and use. It has a long lifespan in both industrial and artistic applications, contributing to sustainability by reducing the need for frequent replacements or touch-ups.
As a durable and safe colorant, Cobalt Blue supports manufacturers and artists in achieving high-quality results while adhering to stringent environmental and safety standards.

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