To increase the density of water base muds(Oil field).
| CAS Number | 7727-43-7 |
| Appearance | Grey Powder |
| Type | Oil field Chemical In Powder Form (Grey) |
| Density | 4.10 g/ml – 4.20 g/ml |
| Water-soluble alkaline earth metals as calcium | (250 mg/kg) maximum |
| Residue greater than 75 um | maximum mass fraction 3.0 %. Particles |
| less than (6) um in equivalent spherical diameter | maximum mass fraction 30% |