Hazards of Calcium Hydroxide

Eye Irritation

• Calcium hydroxide can cause burns and irritation of the eyes. It has a corrosive effect, and if untreated or if prolonged contamination persists, blindness or ulceration of the cornea may result. If a dusting of calcium hydroxide comes in contact with the eyes, wash them under a soft stream of water for at least 15 minutes, and a doctor should be called immediately.

Irritation to Respiratory Tract

• ScienceLab.com says inhalation of calcium hydroxide can result in irritation of the respiratory tract. Mild exposure results in sneezing, coughing and a burning sensation, while severe exposure can produce permanent lung damage, unconsciousness or even death.

Skin Burns and Blisters

• Direct contact with the skin causes blistering and ulceration. The extent of the damage is determined by the length of time the calcium hydroxide is exposed to skin. According to Oxford University, the skin should be washed immediately with soapy water if contamination occurs. Skin lesions should be run under water for at least 15 minutes, and all clothes and shoes that were contaminated should be removed and thoroughly washed before reuse.

Gastric Irritant

• When swallowed or even inhaled, calcium hydroxide can cause severe gastric irritation. Ingestion of the chemical is often followed by diarrhea and vomiting accompanied by severe pain and even collapse. Ingestion may result in death as quickly as within 24 hours. If ingested, do not induce vomiting, drink plenty of water if conscious and contact an emergency service immediately.