The Difference Between Magnesium Chloride and Potassium Chloride

Magnesium chloride and potassium chloride are both valuable salt substitutes that contribute to sodium reduction and a healthier mineral balance. In many food products, they can be used alongside each other and often complement one another functionally and nutritionally. Potassium chloride has been a well-known and widely accepted salt substitute for years, effectively helping to reduce sodium content. Magnesium chloride, on the other hand, is a relatively new player in the field of salt replacement but is rapidly gaining popularity thanks to its natural origin as the second most common mineral in seawater and its excellent suitability for clean label and healthy product positioning. Nevertheless, there are clear differences that play a role when choosing between these minerals—differences that are relevant from technological, sensory, and health-oriented perspectives. In this blog, we will discuss the similarities and distinguishing properties of both salt substitutes.

Price and availability

Regarding price and availability, magnesium chloride is often more stably priced due to local production (such as in the Netherlands), whereas potassium chloride depends on global supply and is sensitive to fluctuations. In terms of taste, magnesium chloride often scores better, offering a mild salty or umami-like impression, while potassium chloride can come across as bitter or metallic at higher dosages.

Health

From a health perspective, both contribute to healthy blood pressure. Many people have a magnesium deficiency, and it is safe to use, whereas excessive potassium intake can pose risks for individuals with kidney problems or those taking certain medications. Magnesium chloride is the second most common mineral in seawater, giving it a natural origin that aligns perfectly with clean label and authentic product positioning. Finally, magnesium chloride also offers technological advantages, such as faster solubility, better processability in dough and marinades, and an enhancing effect on flavor and texture—whereas potassium chloride primarily functions as a pure sodium substitute.

Category	Novasal (magnesium salt)	Potassium chloride (potassium salt)
Price and availability	Stable price due to local production in the Netherlands. Widely available thanks to sufficient production capacity.	More sensitive to price fluctuations and dependent on imports and scarce global sources.
Taste	Mild, slightly salty taste with an umami effect. Enhances natural flavors in products such as bread and cheese.	Can taste bitter or metallic at higher dosages. Primarily imitates the sensation of salt without deepening the flavor.
Health	Essential mineral that is often lacking in the diet. Safe to use and widely applicable.	Contributes to healthy blood pressure, but excessive intake is discouraged for people with kidney problems or those on certain medications.
Application	Dissolves quickly, is highly hygroscopic, and accelerates processes such as dough development, fermentation, and flavor formation. Ideal for moist applications such as bakery, cheese, sauces, and meat substitutes.	Less hygroscopic, slower to dissolve, and therefore better suited as a dry salt substitute.
Natural origin	Occurs naturally in seawater and fits perfectly with clean label and natural product positioning.	Synthetically extracted from mineral sources and lacks the natural sea association of magnesium chloride.