Sodium Bentonite Granular Grade
Specifications 
Specifications
Typical Chemical (oxide) analysis (dry basis):
| SiO2 |
66.80% |
| A12O3 |
22.30% |
| Fe2O3 |
3.26% |
| CaO |
1.48% |
| MgO |
2.59% |
| Na2O |
2.48% |
| K2O |
0.49% |
| TiO2 |
0.48% |
| Mn3O4 |
0.01% |
| SO3 |
0.08% |
| P2O5 |
0.05% |
| BaO |
0.08% |
| Total |
100% |
Cation Exchange Capacity:
| Minimum |
70meq/100mg |
| Average |
78meq/100mg |
| pH |
Average 10.2 |
Exhangeable Cations:
| Sodium |
65.60% |
| Calcium |
20.20% |
| Magnesium |
12.40% |
| Potassium |
1.80% |
Physical Properties:
| Grit Content |
<3.0% |
| Total Moisture |
Maximum 10.5% |
| Bulk Density |
1.1kg/1 |
| Water Absorption (w/w) |
Minimum 650% |
| |
Average 750% |
| Swell Index (m1/2mg) |
Minimum 18 |
Sizing Analysis
| +3.35mm |
11% |
| -3.35 + 1.0 mm |
81% |
| -1.0 + 0mm |
8% |