Property

Typical data

Property

Typical data

color

light to dark brown

combustibility

non combustible

bulk density^a

64 - 160 kg/m³

Mohs hardness

1 - 2 (2.1 - 2.8) [3]

specific gravity

2.5 g/cm³ [3]

cation exchange capacity^b

50 - 100 meq/100 g

moisture loss at 110˚C

4% - 10%

waterholding capacity^a

220% - 325% (by weight)

20% - 50% (by volume)

pH in water

6 - 9

thermal conductivity at 25˚C

60 cal/m²∙h ˚C [3] [4]