Polymer shell:

Acrylonitrile-Copolymer

Core material:

Hydrocarbon

Particle sizes:

15µ to 44µ

True density:

1.00-1.20 g/cm³

Bulk density:

0.30-0.50 g/cm³

Particle sizes after expansion:

40µ ~ 120µ

True density after expansion:

0.02 - 0.04 g/cm³