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Blue 20G599
CI Pigment Blue 28
Cobalt Aluminate Blue Spinel

A rich blue powder produced by high temperature calcination. This pigment has good UV and visible opacity, is chemically inert, heat resistant, and stable to ultraviolet light. It is non-bleeding and non-migratory. It has a bright, more chromatic color than typical pigments in this chemistry class. It has excellent inherent stability, and is generally used in applications where resistance to heat, light, and weather are needed. It is compatible with most resin systems and polymers, and is non-warping. Typical applications (non-inclusive) are liquid and powder coatings, inks, dispersions, concrete, plastics, and other applications where equivalent pigment chemistry is used.

Specifications:


Specific Gravity

4.3

Oil Absorption

26 kg/100 kg

Residue 325 mesh [44 µm]

0.01 wt%

pH

6.5 to 8.5

Heat Stability

800 °C

Surface Area BET

9.1 m²/g

Conductivity

474 µS/cm

Percent Moisture

0.3 wt%

Crystal Structure

spinel

Lightfastness

8 (1-8)

Weatherability

5 (1-5)

Acid Resistance

5 (1-5)

Alkali Resistance

5 (1-5)

Bulk Density

0.41 kg/L

Mean Particle Size

0.9 µm

HBU

37 °C

TSR

29 %

Reflectance (300-2500nm)

Reflectance (visible only)