The two crossword solutions for the term 'cleaning chemical' are LYE (3 letters) and phenol (6 letters). LYE is a strong alkaline substance that is commonly used as a cleaning agent. It is also known as sodium hydroxide or caustic soda. Phenol, on the other hand, is an organic compound that is used in many cleaning products. It is also known as carbolic acid and is used to disinfect surfaces and remove stains.