Overview
Potassium malate is a potassium salt of malic acid, commonly used as a food additive and pH regulator. It is synthesized through the neutralization of malic acid with potassium hydroxide. The compound is valued for its ability to enhance flavors and stabilize pH levels in various products. In addition to its role in the food industry, potassium malate is utilized in pharmaceuticals and industrial applications. Its mild taste and solubility make it suitable for a wide range of formulations. The compound is often preferred over other acid regulators due to its compatibility with organic and natural product lines.
Physical and Chemical Properties
Potassium malate appears as a white crystalline powder with a molecular weight of 210.27 g/mol. It is highly soluble in water and slightly soluble in ethanol. The compound decomposes at around 200°C, making it stable under normal processing conditions. Its key chemical properties include its role as a pH buffer and acid regulator. Potassium malate is non-hygroscopic, which ensures a longer shelf life when stored properly. These properties make it a versatile ingredient in both food and non-food applications.
Main Applications
In the food industry, potassium malate is used as an acidity regulator and flavor enhancer, particularly in beverages, confectionery, and dairy products. It is also employed in low-sodium food products as a potassium source. Pharmaceutical applications include its use as an excipient in tablets and syrups, where it acts as a stabilizer. Industrially, potassium malate is used in cleaning agents and cosmetics due to its mild acidity and buffering capabilities.
Safety and Storage
Potassium malate is generally recognized as safe (GRAS) by regulatory authorities. However, proper handling is essential to avoid inhalation or eye contact. Storage should be in a cool, dry environment, away from moisture and direct sunlight to maintain its stability. Bulk storage requires airtight containers to prevent contamination. For industrial use, personal protective equipment (PPE) such as gloves and masks is recommended during handling to ensure safety.
B2B Procurement Guide
When procuring potassium malate, buyers should prioritize suppliers who provide detailed specifications, including CAS number and purity levels. Certifications such as ISO or GMP compliance are indicators of quality. Price varies based on quantity and purity, with bulk purchases often attracting discounts. Buyers should also consider logistics, as proper transportation and storage conditions are critical to maintaining product integrity.
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