Manufacturing Inorganic Pigments, Coatings, Ceramic Stains and Investment Castings

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7389 Blue 28


Color Description

Pigment Blue 28 – Cobalt Aluminate Blue Spinel

Mason Color 7389, a high-performance cobalt aluminate based pigment, is designed to provide outstanding heat resistance, chemical stability and outdoor durability. This mixed metal oxide pigment meets the demanding performance requirements of the military, aerospace and architectural industries. Mason Color 7389 is recommended for all coating formulations requiring the ultimate in chemical, heat and UV durability.

CAS # 1345-16-0
CI Color:PB 28
Typical Properties:
Specific Gravity: 4.2
Oil Absorption: 23
pH: 9.0
% Retained on 325 Mesh: <0.1%
Crystal Structure: Spinel
Heat Stability: >1000°C
Weatherability: Excellent
Acid Resistance: Excellent
Alkali Resistance: Excellent

1:4 Color

CI Pigment Blue 28

The information herein is believed to be reliable. However, no warranty, expressed or implied, is made as to its accuracy or completeness and none is made as to the merchantability of the material or its fitness for any purpose. The manufacturer shall not be liable for consequential damages or for damages to persons or property resulting from its use. Nothing herein shall be construed as a recommendation for use in violation of any patent.


Architectural finishes
Coil coatings
Cool coatings
Exhaust parts
High solids coatings
Military topcoats
Powder coatings
Roofing materials
UV-curable coatings
Waterborne technology

Related Colors

The swatches in this guide are as accurately represented as the RGB display process will allow.