Muriate of Potash MOP is a high purity, dry crystalline inorganic/metal halide salt composed of potassium and chlolrine, KCl. It has a molar mass of 74.551 g/mol and occurs naturally as the mineral slyvite. Muriate of Potash MOP is often referred to as muriate of potash (MOP), particularly when used as a fertilizer.
• Primarily used as a shale inhibitor as the potassium ion exchanges with calcium and sodium ions n the interlayer space in illites and smectites, converting them to more stable mica-type structures that do not hydrate and swell.
• Used to prepare brines for drill-in, completion, and workover fluids
Other names |
Sylvite common name |
Identifiers |
|
CAS number |
[7447-40-7] |
RTECS number |
TS8050000 |
ChemSpiderID |
4707 |
Properties |
|
Molecular formula |
KCl |
Molar mass |
74.55 g/mol |
Appearance |
white crystalline solid |
Density |
1.987 g/cm3 |
Melting point |
775 °C |
Boiling point |
ca. 1500 °C |
Solubilityin water |
28.1 g/100 ml (0 °C) |
Hazards |
|
MSDS |
ICSC 1450 |
EU Index |
Not listed |
Flash point |
Non-flammable |
LD50 |
2600 mg/kg (oral/rat), 142 mg/kg (intravenous/rat) |
Advantage :
• Widely used in the industry
• Largely benign salt; solutions are neutral pH
• Does not significantly impair performance of polymers such as viscosifiers and filtration controllers