Potassium Bromide 500gm

Aluminum ammonium sulfate, also known as ammonium alum or just alum, is a chemical compound with the formula (NH4)Al(SO4)2·12H2O. It's a white crystalline solid commonly used in water purification, leather tanning, and as a mordant in dyeing textiles. In water purification, alum acts as a coagulant to remove impurities by causing suspended particles to clump together, making it easier for filtration to remove them. In leather tanning, it helps to stabilize the leather by tightening the collagen fibers. And in dyeing textiles, alum helps the dye adhere to the fabric. However, it's important to note that excessive exposure to aluminum compounds like alum can be harmful, so it's typically used with caution and proper safety measures.

Ammonium acetate is a chemical compound with the formula NH4CH3CO2. It is a white, crystalline solid with a vinegar-like odor. It is commonly used in various laboratory applications, such as in molecular biology and analytical chemistry. It can act as a source of acetate ion in reactions and is often used as a buffer solution in biochemical and molecular biology research. Additionally, it is sometimes used in the manufacture of other chemicals and as a food additive.

Anhydrous aluminum chloride, often represented as AlCl3, is a chemical compound composed of aluminum and chlorine. "Anhydrous" means it lacks water molecules in its structure. It's a white or pale yellow solid that is highly hygroscopic, meaning it readily absorbs moisture from the air. This property makes handling it a bit tricky since it can form a solution with water vapor in the air, turning into a fuming liquid.  

Sodium thiosulfate (Na2S2O3) is an inorganic compound that is commonly used as a photographic fixer, as well as in medical and industrial applications. It is a white crystalline powder that is soluble in water and has a mild odor. In photography, sodium thiosulfate is used to remove unexposed silver halide from photographic prints and negatives, making the image permanent. In medicine, it is used as an antidote for cyanide poisoning, and in industrial applications, it is used as a reducing agent, a dechlorinating agent, and in water treatment processes.