ABC of Safety in the Biological Sciences
SODIUM PEROXIDE (Na2O2)
SYNONYMS
Sodium dioxide, sodium superoxide.
GENERAL PRECAUTIONS
Use a fume hood.
Avoid skin and eye contact.
Avoid inhalation or ingestion of the powder.
Keep away from heat or naked flames.
Keep away from moisture.
Keep away from combustible substances.
Keep away from reducing agents.
Keep away from metal powders.
Keep the container tightly sealed.
Wash hands thoroughly after handling.
CHARACTERISTICS
Pale yellow granules which, when heated, yield oxygen which
increases fire hazard. Is a strong oxidant and reacts violently
with combustible and reducing material and light metals causing
fire and explosion hazard. Reacts violently with water,
generating heat forming a strong base (NaOH) and oxygen.
HEALTH HAZARD DATA
May be absorbed by inhalation and ingestion. Is corrosive to
eyes, skin and respiratory tract. Inhalation may cause lung
oedema; and causes sore throat, shortness of breath and laboured
breathing. Skin contact causes redness, pain and serious skin
burns. Eye contact causes redness, pain and blurred vision.
Ingestion causes sore throat, vomiting and diarrhoea.
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.
INCOMPATIBILITY
Combustible substances, reducing agents and light metals.
STORAGE
Store in a cool, dry atmosphere away from heat or ignition
sources.
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.
DISPOSAL
WEAR:
Rubber gloves, large face shield and laboratory coat. A body
shield should be available.
SPILLS:
Cover with at least double the volume of sand-soda ash mixture
(90/10). Mix thoroughly and break up any lumps of peroxide..
with a plastic scoop add slowly to a large beaker of sodium
bisulphite solution 93 or 4 litres) with stirring. Neutralise
with dilute sulphuric acid. When settled, decant the sulphate
solution and discharge to the sewer with a large excess of
water. The sand can be used for land fill.
Hydrogen peroxide: spill or packaged lots - dilute and discharge
to the sewer with a large excess of water.
PACKAGE LOTS:
Use the above method for the encrusted, impure peroxide.
Repackage the recovered pure granular peroxide in glass
containers with rubber stoppers.
ENVIRONMENT:
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