Potassium Chloride 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. Potassium chloride is often referred to as muriate of potash (MOP), particularly when used as a fertilizer.
Potassium Chloride also used as a water softener.
	• 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
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					 Other names  | 
				
					 
						Sylvite common name  | 
			
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					 Identifiers  | 
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					 CAS number  | 
				
					 [7447-40-7]  | 
			
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					 RTECS number  | 
				
					 TS8050000  | 
			
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					 ChemSpiderID  | 
				
					 4707  | 
			
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					 Properties  | 
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					 Molecular formula  | 
				
					 KCl  | 
			
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					 Molar mass  | 
				
					 74.55 g/mol  | 
			
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					 Appearance  | 
				
					 white crystalline solid  | 
			
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					 Density  | 
				
					 1.987 g/cm3  | 
			
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					 Melting point  | 
				
					 775 °C  | 
			
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					 Boiling point  | 
				
					 ca. 1500 °C  | 
			
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					 Solubilityin water  | 
				
					 
						28.1 g/100 ml (0 °C)  | 
			
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					 Hazards  | 
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					 MSDS  | 
				
					 ICSC 1450  | 
			
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					 EU Index  | 
				
					 Not listed  | 
			
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					 Flash point  | 
				
					 Non-flammable  | 
			
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					 LD50  | 
				
					 2600 mg/kg (oral/rat), 142 mg/kg (intravenous/rat)  |