Phosphoric Acid 25%

Principle Routes of Exposure

Skin contact is expected to be the primary route of occupational exposure to Phosphoric Acid. Phosphoric Acid is considered to be corrosive to the eyes and skin. Phosphoric acid may not produce an immediate burning sensation upon skin contact, delaying the awareness of the worker that contact has occurred. Summary of Acute Health Hazards Ingestion: Can produce burns on the mouth and lips, severe gastrointestinal irritation, nausea, bloody diarrhea, difficult swallowing, severe abdominal pains, thirst, acidemia, difficult breathing, convulsions, collapse, shock, and death. Inhalation: Breathing of vapor or mist is possible. Breathing this material may be harmful or fatal. Symptoms may include severe irritation and burns to the nose, throat, and respiratory tract. Skin: May cause permanent skin burns. Phosphoric acid may not produce an immediate burning sensation upon contact, delaying the awareness of the worker that contact has occurred. Symptoms may include redness, burning, and swelling of skin, burns, and other skin damage. Eyes: Can cause permanent eye injury. Symptoms include stinging, tearing, redness, and swelling of eyes. Can injure the cornea and cause blindness. Vapor or spray may cause eye damage, impaired sight or blindness. Carcinogenicity Lists No NTP No IARC Monograph No

Medical Conditions Generally Aggravated by Exposure

In persons with impaired pulmonary function, especially those with obstructive airway diseases, the breathing of phosphoric acid dust or mist might cause exacerbation of symptoms due to its irritant properties. Phosphoric acid mist or solutions may cause dermatitis. Note to Physicians Preexisting disorders of the following organs (or organ systems) may be aggravated by exposure to this material skin, lung (for example, asthma-like conditions).