Polyethylene Glycol

Polyethylene glycol (PEG) is a polymer compound formed by the polymerization of ethylene oxide, with the molecular formula H(OCH₂CH₂)nOH. It is a colorless to milky white waxy solid or transparent liquid (depending on molecular weight), odorless, non-toxic, and soluble in water and many organic solvents.

Polyaluminum chloride

Polyaluminum chloride (PAC) is a highly efficient inorganic polymeric flocculant. It appears as a pale yellow or golden-yellow solid or liquid, is readily soluble in water, and possesses strong adsorption, flocculation, and sedimentation properties. PAC is widely used in water treatment, papermaking, printing and dyeing, leather processing, and industrial wastewater treatment, and is one of the most widely used water purification agents.
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