Sodium perchlorate is an inorganic compound with the chemical formula NaClO4. It consists of sodium cations Na+ and perchlorate anions ClO−4. It is a white crystalline, hygroscopic solid that is highly soluble in water and ethanol. It is usually encountered as sodium perchlorate monohydrate NaClO4·H2O. The compound is noteworthy as the most water-soluble of the common perchlorate salts.Sodium Perchlorate Monohydrate 98 % AR is a chemical with the formula NaClO4•H2O, indicating it’s a white, odorless crystalline solid that is highly soluble in water. The “98 % AR” specifies its purity (at least 98%) and grade as Analytical Reagent (AR), meaning it meets strict standards for chemical analysis and laboratory use. It acts as a strong oxidizing agent and is used in various chemical syntheses and applications, but it is also a reactive chemical and an explosive hazard, requiring careful handling and storage.