Potassium L-ascorbate is the potassium salt of vitamin C, featuring antioxidant, nutritional fortification and pH buffering properties. It is widely applied in food, health care products, pharmaceutical and cosmetic industries. In food industry, it is used as antioxidant E303 to prevent lipid oxidation and browning of fruits and vegetables, so as to extend shelf life. It also acts as a nutritional fortifier to supplement vitamin C and potassium for beverages, dairy products, baked goods and meat products. In health care products, it serves as buffered vitamin C supplement. It causes less gastrointestinal irritation than common ascorbic acid, suitable for people with sensitive stomach. It helps enhance immunity, relieve fatigue and promote collagen synthesis. In pharmaceutical field, it is applied in electrolyte supplements for treating hypokalemia and scurvy, and used as stabilizer to prevent drugs from oxidation. In cosmetics, it functions as antioxidant to inhibit free radicals, brighten skin tone and delay aging, commonly added into serums, lotions and sunscreen products. Thanks to high water solubility and nearly neutral pH, it has excellent compatibility and becomes an ideal alternative to conventional vitamin C.

This product is a low-risk substance with no GHS hazard classification. Standard precautions include avoiding inhalation of dust and direct contact with skin and eyes. Inhalation of fine dust may cause slight respiratory irritation and cough, which can be relieved under well-ventilated conditions. It barely irritates skin, while temporary redness may occur on sensitive skin, just rinse with clean water. Eye contact may lead to slight stinging; flush eyes with plenty of running water for 15 minutes and seek medical help if discomfort remains. Ingestion of normal dose is harmless, while excessive intake may cause mild gastrointestinal symptoms such as nausea and bloating, and drinking plenty of water can alleviate discomfort. Conduct operations in ventilated areas, and wear dust mask, gloves and safety goggles to avoid dust dispersion. Store in sealed and dark conditions, keep away from oxidants, strong acids and strong alkalis, and separate from food materials. In case of leakage, collect the powder and clean contaminated areas with water, and dispose of waste as general garbage. It has no carcinogenic, teratogenic or reproductive toxicity, and is safe for long-term use.