Aluminium lactate is a chemical compound that consists of aluminium, lactate, and water molecules. It has the molecular formula Al(C3H5O3)3•xH2O, where x represents the number of water molecules associated with the compound. Aluminium lactate is a white to pale-yellow powder that is soluble in water and alcohol.
Aluminium lactate is a salt of aluminium and lactic acid with the basic formula Al(C3H5O3)3. It is a topical astringent that is used as an antiseptic agent. It is used to treat inflammation, itching, and stinging of the infected skin and promotes healing.
Physical properties
Aluminium lactate appears as a white powder which is soluble in water. It is a white, odorless powder that is soluble in water and ethanol.
- Chemical formula: C9H15AlO9
- Molar mass: 294.192 g·mol−1
- Appearance: White powder
- Melting point: 300 °C (572 °F; 573 K)
- Solubility in water: Soluble
Aluminium lactate has a pH of around 3.5 to 4.5, which makes it a good ingredient for products designed to balance the pH of the skin. It can help to moisturize the skin, making it a popular ingredient in moisturizing creams and lotions.
It has antimicrobial properties and can help to inhibit the growth of bacteria and fungi. This makes it useful as an ingredient in antiseptic and antibacterial products. It is a stable compound that can withstand high temperatures and is resistant to hydrolysis.
Synthesis
Aluminium lactate is obtained by precipitating a solution of barium salt by aluminium sulfate. It should be noted that while aluminium lactate is generally recognized as safe for its intended uses, there is some concern regarding its potential toxicity when ingested or absorbed by the body. Therefore, it is important to use aluminium lactate only as directed and to follow all safety precautions.
Use
Aluminium lactate is used as a mordant. It is suitable for use in both the cosmetic and oral industries. It is also used as a precursor for sol–gel synthesis of alumina-based glasses.
Aluminium lactate is used in various applications such as in the food industry as a food additive, in the pharmaceutical industry as an antacid, and in the cosmetic industry as an astringent and deodorant. It is also used in some medical devices as a component of antiperspirants.
