Manufacturers are seeking more sustainable options for metal parts cleaning. Toxic solvents for metal parts cleaning being more and more being replaced by aqueous-based solutions. Aqueous-based options can remedy some of the problems of traditional solvents which are flammable, emit volatile organic compounds and can be classified legally as hazardous. The hazardous classification increases both the cost of the solvent use and liability.
One such aqueous-based cleaner is Bios24. "ArmaKleen™ Bio 24 is a bio based, super concentrated, water based industrial parts washing cleaner/degreaser designed to be used in the automotive, industrial, military and government cleaning applications. Bio 24 is formulated to work in manual, immersion, spray under immersion, ultrasonic and spray washing equipment to remove soils such as grease, lubricating oils, dirt and other soils from steel, copper, aluminum and other polymeric surfaces."
Read more here: https://www.armakleen.com/introducing-bio24-aqueous-solution