ABC of Safety in the Biological Sciences - Tannic Acid

 

ABC of Safety in the Biological Sciences

 


 

TANNIC ACID (C70H52O46)

SYNONYMS
Tannic.
GENERAL PRECAUTIONS
Use a fume hood ­ suspected carcinogen.
Avoid eye contact.
Avoid inhalation.
Wash hands thoroughly after handling.
CHARACTERISTICS
Buff coloured powder.
HEALTH HAZARD DATA
This substance is a potential carcinogen and should be handled with care. It is regarded as having a low toxicity and will only cause temporary discomfort if inhaled or if eye contact is made. It may be harmful if ingested, particularly in large amounts, and prolonged exposure may cause cancer.
TREATMENTS
Skin ­ 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 ­ immediately wash the affected eye with large amounts of water until all evidence of the chemical has been removed (approximately 15 minutes). If discomfort persists seek medical attention.
Inhalation ­ remove from the area of exposure to fresh air. If discomfort persists seek medical attention.
Ingestion ­ wash out the mouth thoroughly with water and give plenty of water to drink. If ingested in large amounts seek medical attention.
INCOMPATIBILITY
Heating produces toxic fumes of carbon.
STORAGE
Store in a cool, dry atmosphere away from heat.
HANDLING
Use a fume hood to keep the level of exposure low. Wear protective clothing. A long sleeved laboratory coat or gown, rubber gloves, safety goggles and a face mask as a minimum standard.
DISPOSAL
WEAR:
Rubber gloves, face shield and laboratory coat. A body shield and self contained breathing apparatus should be available.
SPILLS:
Eliminate all sources of ignition. Cover the contaminated surface with soda ash or sodium bicarbonate. Mix and add water if necessary. scoop up the slurry, check for neutrality with litmus then discharge to the sewer with a large excess of water. Wash the spill site with soda ash solution.
PACKAGE LOTS: Either
1 Liquid acid may be injected at the base of an incinerator after mixing with a flammable solvent. the incinerator should be equipped with an afterburner and scrubber.
OR
2 A solid acid may be dissolved in a flammable solvent and burned as above.
OR
3 A solid acid may be packaged in paper or other flammable material and burned in an incinerator equipped with an afterburner.
ENVIRONMENT:

 


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