Potassium lactate is a compound with formula KC3H5O3. It is the potassium salt of lactic acid and appears as a clear, hygroscopic, syrupy liquid suspension that is typically 60% solids. The substance can be concentrated to contain up to 78% solids.PURASAL http://www.purac.com/EN/Food/Brands/Potassium_lactate.aspx It is produced by neutralizing lactic acid, which is fermented from a sugar source. It has E number E326.
Uses
Culinary uses Potassium lactate is commonly used in meat and poultry products to extend shelf life and increase food safety, as it has a broad antimicrobial action and is effective at inhibiting most spoilage and pathogenic bacteria.Meat and Poultry. http://www.purac.com/EN/Food/ingredients/Meat_poultry_and_fish.aspx
Fire fighting uses Potassium lactate is used as an extinguishing medium in First Alert Tundra fire extinguishers. MSDS for First Alert Tundra (MSDS 06-1753A), http://www.firstalert.com/site_content/85-home/952-tundra-fire-extinguishing-spray#downloads
References