C.I. Pigment Black 28 (77428) (p. bk. 28 Pigment) Copper Chromite Black Spinel

 

 

FU-GS601 Copper Chromite Black Spinel P. Bk. 28, also named Copper Chromite Black. high gloss, moderate covering. The crystal structure of spinel makes the pigment show excellent thermal stability.

 

 

Product Name: Copper Chromite Black Spinel

Item Code: FU-GS601

Color Index: Pigment Black 28 (PBk 28)

C.I. No.: 77428

CAS No.: 68186-91-4

Composition: Cu-Cr

 

Copper Chromite Black Spinel (PBk 28) in Glass Inks:

Excellent High-Temperature Stability – Withstands glass-firing temperatures (typically up to ~850°C) without color change or decomposition.

Superior Durability – Highly resistant to chemicals, UV light, and weathering, ensuring long-term outdoor performance.

Deep, Jet-Black Color – Provides strong, opaque black tones with reliable tinting strength.

Heavy-Metal-Free & Compliant – Free from lead and cadmium, meeting major environmental regulations (e.g., RoHS, REACH).

Good Compatibility – Integrates well with glass frits for a stable, scratch-resistant finish after firing.

 

 

 

 

 

 

 

 

 

 

 

 

Physical and Chemical properties of Copper Chromite Black Spinel PBk 28

Test Intems	Specification
Appearance	Black Pigment Powder
Heat Resistance (℃)	750℃
Oil Absorption,g/100g	15-25
Moisture,%	≤0.2
Residue(325mesh),%	≤0.05
PH Value	/
Particle Size(µm)≤	≤1.5

 

Copper Chromite Black Spinel Pigment Black 28 Application:

Glass ink, Glass coating, Glass decoration

 

 

Remark

Package 25KG/Bag

Color may vary as shown depending on application and is for indication only

Produce according to the requirement of RoHS

Custom-made color available

 

 

 

 

 

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