Do not scatter spilled material with high pressure water streams. Use agents suitable for type of surrounding fire. Avoid breathing hazardous vapors, keep upwind. Ingestion may result in abdominal pain, nausea, vomiting, diarrhea, cramps, pain and burning in the mouth. Generally, phosphates are slowly and incompletely absorbed, therefore systemic reactions are unlikely when these salts are given orally.
Sodium phosphates are capable of seriously reducing the ionic serum calcium.
Sodium phosphate, monobasic is used as a food additive. No adverse effects have been reported. May cause transient irritation. Tested on rabbit eyes by continuous exposure for three hours at 0.1M solution at pH 7.0 to 7.5 made up to 0.16 osmolar with sodium chloride or sucrose, caused no disturbance of the cornea. If breathing has stopped, perform artificial respiration.