Potassium cinnamate
[CAS# 16089-48-8]

Identification

• Classification: Food additive >> Preservative
• Name: Potassium cinnamate
• Molecular Formula: C₉H₇KO₂
• Molecular Weight: 186.25
• CAS Registry Number: 16089-48-8
• EC Number: 240-244-7
• SMILES: C1=CC=C(C=C1)/C=C/C(=O)[O-].[K+]

Safety Data

• Hazard Symbols: GHS07 Warning
• Risk Statements: H315-H319-H335
• Safety Statements: P261-P305+P351+P338

Discovery and Applications

Discovered in the late 19th century, potassium cinnamate is derived from cinnamic acid, a naturally occurring compound found in cinnamon bark and other plant sources. Through chemical synthesis, cinnamic acid is combined with potassium hydroxide to produce potassium cinnamate, a white crystalline powder with a sweet, aromatic odor reminiscent of cinnamon.

One of the hallmarks of potassium cinnamate is its versatility in food and beverage applications. As a food additive, it is highly regarded for its sweetening properties and ability to enhance flavor. Potassium cinnamate is often used as a flavoring agent in a variety of products, including baked goods, confectionery, beverages, and dairy products. Its sweet, aromatic flavor makes it a popular choice to impart a subtle cinnamon flavor to foods and beverages, enhancing their sensory appeal.

Potassium cinnamate can also be used as a food preservative, helping to extend shelf life and prevent spoilage. Potassium cinnamate has antimicrobial properties that are effective against a wide range of microorganisms, including bacteria and fungi, thereby ensuring food safety and quality. In addition, potassium cinnamate can inhibit the growth of certain foodborne pathogens, further improving food safety.

In addition to its applications in the food and beverage industry, potassium cinnamate can also be used in cosmetics and personal care products. Its sweet aroma and skin conditioning properties make it a great ingredient in skin care formulations such as lotions, creams, and serums. Potassium cinnamate is thought to have antioxidant properties that help protect the skin from oxidative stress and premature aging. Its pleasant scent adds a luxurious feel to perfumes, colognes, and fragrances, enhancing their appeal to consumers.

Potassium cinnamate also has potential applications in pharmaceuticals and medicine. Preliminary studies suggest that potassium cinnamate may have anti-inflammatory and analgesic properties, making it a candidate for the development of analgesics. Its antioxidant activity may have protective effects against certain diseases and health conditions, although further research is needed to confirm these potential benefits.

Potassium cinnamate is used in industrial processes and chemical synthesis. It is a precursor to the production of other cinnamic acid derivatives, which are used in the synthesis of flavors, fragrances, and pharmaceuticals. Potassium cinnamate is used in organic synthesis reactions as a reagent or catalyst in a variety of chemical transformations.

Despite its wide range of uses, it is also important to note that potassium cinnamate, like other food additives, should be used responsibly and in accordance with regulatory guidelines. While generally considered safe for use in food at regulated levels, excessive intake of potassium cinnamate may adversely affect the health of some individuals. Therefore, its use and dosage should be carefully considered to ensure consumer safety.

References

2025. Design, synthesis and bioactivity evaluation of cinnamic acid derivatives as potential anti-inflammatory agents against LPS-induced acute lung injury. Bioorganic & Medicinal Chemistry Letters, 115.
DOI: 10.1016/j.bmcl.2024.130036

2025. Trans-cinnamic acid alleviates high-fat diet-induced renal injury via JNK/ERK/P38 MAPK pathway. The Journal of Nutritional Biochemistry, 135.
DOI: 10.1016/j.jnutbio.2024.109769

2024. Plant-derived and dietary phenolic cinnamic acid derivatives: Anti-inflammatory properties. Food Chemistry, 463.
DOI: 10.1016/j.foodchem.2024.140080