Formalin supplier, formalin manufacturer india vadodara Formalin is an aqueous solution of formaldehyde that has many uses, including as a preservative, disinfectant, and in tissue fixation. Medical labs Formalin is used to preserve tissues for histological examination. It's also used in vaccines to inactivate viruses and detoxify bacterial toxins. Food Formalin is used as a preservative in fruits, vegetables, and fish in tropical countries. Disinfectant Industrial: Formalin is used as an industrial disinfectant. Funeral homes: Formalin is used as a disinfectant in funeral homes.