Monoammonium Phosphate (MAP)

SECTION 2: Hazards identification

Emergency Overview When heated to decomposition, may emit toxic products such as fluorides and phosphorous oxides. Brown to gray granules that are odorless.

Potential health effects

Eyes: Contact may cause mild eye irritation including stinging, watering, and redness.. Skin: Contact may cause mild irritation including redness and a burning sensation. No harmful effects from skin absorption have been reported. Inhalation: No information available. Studies by other exposure routes suggest a low degree of hazard by skin irritation. Ingestion: Low to moderate degree of toxicity by ingestion. Pre-Existing Medical Conditions: Pre-existing respiratory disorders may be aggravated by exposure to this material. Signs and Symptoms: Effects of overexposure may include irritation of the nose, throat and digestive tract, nausea, vomiting, diarrhea, coughing, and shortness of breath. Late Toxicities: Cancer: No data available. Target Organs: No data available. Developmental and Reproductive System Effects: No data available. Other Comments: Prolonged or repeated overexposure to fluoride compounds may cause fluorosis. Fluorosis is characterized by skeletal changes, consisting of osteosclerosis (hardening or abnormal density of bone) and osteomalacia (softening of bones) and by mottled discoloration of the enamel of teeth (if exposure occurs during enamel formation.) Symptoms may include bone and joint pain and limited range of motion. This material contains iron compound(s). Effects of overexposure to dusts can include irritation of the eyes and respiratory tract, pneumoconiosis (dust congested lungs), pneumonitis (lung inflammation), coughing, vomiting, diarrhea, abdominal pain and jaundice.