Abraxo cleaner

Abraxo cleaner is a pre-War, cleaning scouring powder produced by Abraxodyne Chemical, appearing in Fallout 3, Fallout: New Vegas, and Fallout 4.

Background
Abraxo is a powdered abrasive and cleanser, likely alkali and most assuredly caustic and poisonous when ingested. It is still an effective cleanser, being useful for washing out super mutant blood, but in the wrong hands, it can be made into explosives and narcotics, like Ultrajet.