PEG 8000 (CAS No. 25322-68-3) is a polyethylene glycol having white to off white color and available in solid flakes or powder form. PEG 8000 used as a base in the formulation of soap sticks. PEG 8000 has low glycol content and higher crystalinity. Its high molecular weight mainly prompts its use in pharmaceutical formulations as solvent for oral, topical and parenteral preparations. The high molecular weight PEG 8000 is soluble in water and organic solvents such as alcohols. It can blend with other PEG molecular weights to achieve the desired viscosity properties. PEG 8000 is quite stable and does not support microbial growth, even in aqueous solutions.