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Poly Aluminum Chloride Market - Industry Analysis 2024 Poly aluminum chloride is present in liquid as well as solid form. In its powder version, it occurs as a yellow substance which must be packed in bags lined with polyethylene, whereas in its liquid form, it is colorless to pale yellow and needs to be packed in acid-resistant rubber or plastic-lined tanks or containers. Poly aluminum chloride, also known as poly aluminum chloride hydroxide sulphate and poly aluminum chloride hydroxide. It is readily soluble in water. Poly aluminum chloride in the powdered form is known to absorb moisture when exposed to the atmosphere. The raw materials required to manufacture Poly aluminum chloride in its liquid form are sulphuric acid, calcium carbonate, aluminum hydroxide, and hydrochloric acid. Poly aluminum chloride is used on a large scale for the purpose of wastewater treatment.