First Aid for White Phosphorus from the CDC

Further info: http://www.cdc.gov/niosh/ershdb/EmergencyResponseCard_29750025.html

GENERAL INFORMATION: Initial treatment is primarily supportive. In cases of skin or eye exposure, it includes the immediate removal of burning particles of white phosphorus from the patient/victim's eyes or skin. If skin or eyes are contaminated with white phosphorus, cover them with cool wet cloths to avoid re-ignition.

ANTIDOTE: There is no antidote for white phosphorus toxicity.

EYE:
Immediately remove the patient/victim from the source of exposure.
Immediately wash eyes with large amounts of cool water for at least 15 minutes.
Keep exposed eyes covered with wet compresses to prevent white phosphorus particles from re-igniting.
Avoid application of any lipid- or oil-based ointments, which may increase the absorption of white phosphorus.
Consider application of an eye cage to prevent direct pressure being applied to the eyeball.
Seek medical attention immediately.

INGESTION:
Immediately remove the patient/victim from the source of exposure.
Ensure that the patient/victim has an unobstructed airway.
Do not induce vomiting (emesis).
Monitor heart function and evaluate for low blood pressure (hypotension), abnormal heart rhythms (dysrhythmias), and reduced respiratory function (respiratory depression).
Evaluate for low blood sugar (hypoglycemia), electrolyte disturbances, and low oxygen levels (hypoxia).
If evidence of shock or low blood pressure (hypotension) is observed, begin intravenous (IV) fluid administration.
Seek medical attention immediately.

INHALATION:
Immediately remove the patient/victim from the source of exposure.
Evaluate respiratory function and pulse.
Ensure that the patient/victim has an unobstructed airway.
If shortness of breath occurs or breathing is difficult (dyspnea), administer oxygen.
Assist ventilation as required. Always use a barrier or bag-valve-mask device.
If breathing has ceased (apnea), provide artificial respiration.
Monitor for respiratory compromise, respiratory distress, and accumulation of fluid in the lungs (pulmonary edema).
Monitor the patient/victim for signs of whole-body (systemic) effects and administer symptomatic treatment as necessary.
Seek medical attention immediately.

SKIN:
Immediately remove the patient/victim from the source of exposure.
See the Decontamination section for patient/victim decontamination procedures.
Immerse areas of affected skin in cold water or cover them with wet dressings at all times.
Vigorous irrigation with cold water is the best way to remove white phosphorous embedded in the skin.
Remove visible particles of white phosphorus while washing with large amounts of cold water or while the area is submerged in cold water.
The use of cold water is critical, but care should also be taken to guard the patient/victim against hypothermia.
Immediately place any particles of white phosphorus that are removed into a container of cold water to reduce risk to medical personnel and others.

Avoid application of any lipid- or oil-based ointments, which may increase the absorption of white phosphorus.
Monitor the patient/victim for signs of whole-body (systemic) effects.
If signs of whole-body (systemic) poisoning appear, see the Ingestion section for treatment recommendations.
Seek medical attention immediately.