
Preservatives are crucial in cosmetics and personal care products to prevent bacterial, mold, and yeast growth, ensuring product safety and longevity. Common preservatives include parabens, phenoxyethanol, and natural options like potassium sorbate. Brands now emphasize preservative-free or naturally preserved formulas to meet consumer demand for safer, cleaner beauty products.
Aluminum Ammonium Sulphate
Aluminum ammonium sulphate, commonly known as ammonium alum or ammonium aluminum sulfate, is a crystalline chemical compound consisting of aluminum, ammonium, and sulfate ions. It typically appears as a colorless or white crystalline solid with astringent properties. It is widely used for its excellent coagulating, clarifying, and antiseptic properties. Aluminum ammonium sulphate finds applications in water purification, cosmetics, food processing, textile dyeing, and pharmaceuticals. Its ability to precipitate impurities and act as a mordant makes it invaluable in industries requiring precise control of chemical reactions, such as in the preparation of baking powder and fireproof textiles.
Aluminum hydroxide
Aluminum Hydroxide, chemically known as Al(OH)₃, is a white, odorless, and odorless powder or gelatinous substance. It is widely used in pharmaceuticals as an antacid to neutralize stomach acid and relieve indigestion and heartburn. Beyond healthcare, aluminum hydroxide is a crucial component in water purification, fire retardants, and as a precursor or filler in various industrial applications. It functions as a flame retardant by releasing water upon heating, thus cooling the material and diluting flammable gases. Due to its amphoteric nature, it can react both as an acid and base, enhancing its versatility. Aluminum hydroxide is often utilized in manufacturing aluminum salts and in producing aluminum oxide.
Anhydrous Aluminum Chloride
Anhydrous Aluminum Chloride (AlCl₃) is a white to pale yellow crystalline solid known for its strong Lewis acid properties. It is a key catalyst widely used in organic synthesis, especially in Friedel-Crafts alkylation and acylation reactions. Due to its high reactivity with moisture, it must be stored and handled under strictly anhydrous conditions. Anhydrous Aluminum Chloride also finds applications in polymerization, pharmaceuticals, and the production of dyes, pharmaceuticals, and petrochemicals.