Potassium Cocoate - CAS 61789-30-8

Potassium Cocoate - Properties, Applications, and Safety

Potassium cocoate (CAS 61789-30-8) is the potassium salt of fatty acids derived from coconut oil. It is produced through the saponification of coconut oil with potassium hydroxide (KOH). This natural, anionic surfactant is widely used in cosmetic, personal care, and household cleaning formulations due to its excellent foaming, cleansing, and emulsifying properties. As a plant-derived, biodegradable ingredient, it aligns with the growing demand for sustainable and eco-friendly products.

Chemical and Physical Properties

Potassium cocoate is a mixture of potassium salts of various fatty acids found in coconut oil, primarily lauric (C12), myristic (C14), and palmitic (C16) acids. It is a clear to slightly hazy liquid, colorless to light yellow, with a mild, characteristic odor. The pH of a 10% aqueous solution typically ranges from 10.0 to 11.5, indicating an alkaline nature. The density is approximately 1.03 g/mL at 20°C, and the solidification point is approximately -5°C. The molecular weight is approximately 260 g/mol. The compound is highly soluble in water and stable under normal storage conditions. It is free from preservatives and sulfates.

Applications

Cosmetics and Personal Care: Potassium cocoate is a primary ingredient in liquid soaps, bar soaps, shampoos, shower gels, facial cleansers, and shaving foams. It acts as a surfactant, detergent, foaming agent, emulsifier, and moisturizer. The glycerin content, a byproduct of saponification, serves as a natural moisturizer, leaving skin feeling soft and hydrated. It is mild and gentle on the skin, making it ideal for sensitive skin formulations. Recommended use levels range from 15% to 55% as a primary surfactant and 5% to 15% as a secondary surfactant.

Household and Institutional Cleaning: Used in laundry detergents, laundry capsules, dishwashing liquids, and hard surface cleaners due to its excellent cleaning and foaming properties.

Agrochemicals: Applied as an insecticide preparation.

Other Industrial Applications: Used in surgical scrubs, textile processing, and as an additive in oxide or carbonate collector packages.

Safety and Toxicology

Potassium cocoate is considered safe for use in cosmetics and personal care products. It is non-irritating, non-sensitizing, and biodegradable. It is preservative-free, sulfate-free, and free from alkaline substances. The compound is approved by COSMOS and ECOCERT and is listed on the EPA Safer Choice Chemical Ingredient List. It is suitable for vegan and vegetarian formulations.

Storage and Handling

Potassium cocoate should be stored in tightly sealed containers in a cool, dry place, protected from moisture and direct sunlight. It should be kept away from strong acids and oxidizing agents. The shelf life is typically up to 24 months under recommended storage conditions.

Conclusion

Potassium cocoate is a versatile, natural, and environmentally friendly anionic surfactant derived from renewable coconut oil. Its excellent foaming, cleansing, and emulsifying properties, combined with its mildness and biodegradability, make it a preferred choice for personal care, household cleaning, and various industrial applications. As consumer demand for sustainable and natural ingredients continues to grow, potassium cocoate remains a key component in the formulation of effective and eco-conscious products.