ABC of Safety in the Biological Sciences - Calcium Oxide

 

ABC of Safety in the Biological Sciences

 


 

CALCIUM OXIDE (CaO)

SYNONYMS
Lime, burnt lime, quick lime.
CHARACTERISTICS
White hygroscopic powder with pungent odour, reacts violently with water and acids generating heat.
INCOMPATIBILITY
Acids and water.
HEALTH HAZARD DATA
Is corrosive to eyes, skin and respiratory tract. Inhalation causes sore throat, coughing, shortness of breath, laboured breathing and may cause lung oedema. Skin and eye contact are corrosive causing redness, pain and burns. Ingestion is corrosive causing sore throat, abdominal pain and diarrhoea.
HANDLING and GENERAL PRECAUTIONS
Use a fume hood.
Avoid skin and eye contact.
Avoid inhalation or ingestion of the powder.
Keep away from moisture.
Keep the container tightly sealed.
Keep away from acids.
Wash hands thoroughly after handling.
Use a fume hood to minimise exposure to this substance. Wear protective clothing to avoid skin or eye contact, inhalation or ingestion. A long sleeved laboratory coat or gown, rubber gloves, safety goggles and a face mask as a minimum standard.
TREATMENTS
Skin ­ immediately wash the affected area with soap or mild detergent and large amounts of water until all evidence of the chemical has been removed (approximately 15 minutes). If hypersensitivity develops seek medical attention.
Eyes ­ wash the affected eye with large amounts of water until all evidence of the chemical has been removed (approximately 15 minutes). If irritation or pain persist seek immediate medical attention.
Inhalation ­ remove from the area of exposure to fresh air. Keep warm and allow to rest. If irritation persists or signs of toxicity develop seek medical attention.
Ingestion ­ wash out the mouth thoroughly with water and give water to drink. Do not induce vomiting. Never give anything by mouth to an unconscious person. Seek immediate medical advice.
STORAGE
Store in a cool, dry atmosphere away from heat or ignition sources.
DISPOSAL:
WEAR:
Rubber gloves, large face shield, all purpose or special canister respirator for ammonia and laboratory coat.
SPILLS:
Solid - sweep up, dilute and neutralise with 6M hydrochloric acid, in a large bucket. Discharge to sewer with a large excess of water.
Solution - neutralise and mop up.
PACKAGE LOTS:
Pour into a large tank of water and neutralise. Discharge into sewer with a large excess of water.
ENVIRONMENT

 


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