Shandong Huashang Chemical Co., Ltd. is a high-tech enterprise specializing in the research and development, manufacturing, and sales of fine chemicals. Headquartered in Jinan, Shandong, China, we are committed to delivering high-quality products to our global partners. Currently, over 90% of our products are exported to developed markets, including North America, Europe, Japan, South Korea, and the Middle East.
1. Physical Properties
Rosmarinic Acid is a white to off-white crystalline powder with a slight herbal odor. It has a molecular weight of 360.31 Da, a melting point of 171-175°C, and a density of 1.33 g/cm3 at 20°C. It is soluble in water, ethanol, and methanol, but slightly soluble in non-polar organic solvents. The powder is hygroscopic and may darken upon prolonged exposure to air or light.
2. Chemical Properties
Chemically, Rosmarinic Acid is an ester of caffeic acid and 3,4-dihydroxyphenyllactic acid, containing two catechol groups in its structure. It exhibits strong antioxidant activity by scavenging free radicals and inhibiting lipid peroxidation. It is stable under acidic, low-temperature, and dark conditions but incompatible with strong oxidizing agents and calcium/magnesium ions. It can undergo oxidation reactions, especially in alkaline environments or when exposed to light and heat.
3. Storage & Safety Properties
Storage: Store in a dry, cool, well-ventilated, and sealed environment at 2-8°C, away from direct sunlight, heat sources, moisture, and strong oxidants. Keep packaging intact to prevent moisture absorption, oxidation, and contamination.
Safety: Rosmarinic Acid is generally recognized as safe (GRAS) by FDA and is non-toxic. It may cause mild skin or eye irritation in sensitive individuals. When handling, wear appropriate protective equipment (gloves, goggles) and operate in a well-ventilated area. In case of skin or eye contact, rinse immediately with plenty of water. This product is for industrial and research use only, not for direct human consumption without formulation.
