ABC of Safety in the Biological Sciences
CHROMIC POTASSIUM SULPHATE (CrK(SO4)2.12H20)
Chrome alum, chromium potassium sulphate.
Efflorescent, violet crystals or crystalline powder.
Heating produces toxic fumes of sulphur.
HEALTH HAZARD DATA
This substance has a relatively low toxicity but the effects are accumulative whether ingested or inhaled. It is an eye and skin irritant. It is a potential carcinogen.
HANDLING and GENERAL PRECAUTIONS
Avoid skin and eye contact.
Keep away from heat.
Wash hands thoroughly after handling.
Wear protective clothing to avoid skin and eye contact and the possibility of inhaling the dust. A long sleeved laboratory coat or gown, rubber gloves, safety goggles and a face mask as a minimum standard.
Skin immediately wash the affected area with large amounts of water until all evidence of the chemical has been removed (approximately 15 minutes). If irritation persists seek medical advice.
Eyes immediately wash the affected eye with large amounts of water until all evidence of the chemical has been removed (approximately 15 minutes). If irritation persists seek immediate medical attention.
Inhalation remove from the area of exposure to fresh air. If breathing has ceased apply artificial respiration. If irritation or discomfort persist seek immediate medical attention.
Ingestion wash out the mouth with water and seek immediate medical advice.
Store in a cool, dry atmosphere away from heat.
WEAR: Rubber gloves, safety glasses and laboratory coat.
Solid - collect in a beaker, dissolve in a large amount of water. Add soda ash, mix and neutralise with 6M hydrochloric acid and discharge to sewer with large excess of water.
Solution - cover with soda ash, mix and scoop into a beaker of water. Neutralise with 6M hydrochloric acid and discharge to sewer with a large excess of water. If a spill contains a fluoride, add slaked lime in addition to the above treatment.
Add slowly to a large container of water. Stir in a slight excess of soda ash. If fluoride is present add slaked lime. Let stand for 24 hours. Decant or siphon into another container and neutralise with 6M hydrochloric acid. Discharge to sewer with a large excess of water. The sludge may be added to land fill.