Black Alum is known as another name for which chemical?

Black Alum is commonly identified as Aluminum Sulfate, which is an inorganic compound frequently used in various applications, including water purification and as a food additive. Its distinctive properties, such as its ability to form flocs that help clarify water, make it particularly valuable in environmental health and public health sectors.

In contrast, the other compounds listed do not match the common usage or description associated with Black Alum. Aluminum Hydroxide is primarily used in pharmaceuticals and as an antacid; Sodium Aluminate is used in water treatment and as a coagulant but does not carry the name Black Alum; while Calcium Sulfate is a different compound altogether, widely used in construction and as a desiccant. These distinctions highlight why Aluminum Sulfate is correctly associated with the term Black Alum.