ABC of Safety in the Biological Sciences - Nitrobenzene

 

ABC of Safety in the Biological Sciences

 


 

NITROBENZENE (C6H5NO2)

SYNONYMS
Nitrobenzol, mirbanc oil.
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 oxidising materials.
Keep away from combustible substances.
Keep away from reducing agents.
Keep the container tightly sealed.
Wash hands thoroughly after handling.
CHARACTERISTICS
Pale yellow oily liquid with characteristic odour. Reacts with reducing materials. Reacts with oxidants forming mechanical shock sensitive compounds.
HEALTH HAZARD DATA
May be absorbed by inhalation, ingestion or via the skin. Irritates the eyes and may affect the blood. Inhalation may cause shortness of breath, dizziness, nausea, faintness, unconsciousness, bluish skin. Skin contact and ingestion may cause similar symptoms to inhalation. Eye contact causes redness.
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. Induce vomiting. Never give anything by mouth to an unconscious person. Seek immediate medical advice.
INCOMPATIBILITY
Avoid oxidants, combustibles, nitric acid.
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:
Butyl rubber gloves, laboratory coat, self contained breathing apparatus and protective shoes.
SPILLS:
On skin and clothing: wash skin with a strong soap solution immediately. Rinse well. Contaminated clothing should be removed and cleaned at once or destroyed by burning.
Small spills: absorb liquid on paper towels or vermiculite; sweep solid spills on to paper. Put on an iron pan in a fume hood and allow to evaporate. Burn the paper or vermiculite in the absence of other inflammables. Wash the site thoroughly with a strong soap solution.
Large spills: absorb or mix with vermiculite, sodium bicarbonate or sand. Package this in a paper carton and burn in an open pit. Use wood scraps and crumpled paper to augment burning. Wash the site thoroughly with a strong soap solution.
PACKAGE LOTS: Either
1 Pour os sift on to sodium bicarbonate or a sand, soda ash mixture (90/10). Mix and package in heavy paper cartons with plenty of paper packing to serve as fuel. Burn in an incinerator.
OR
2 Mix with a flammable solvent and spray into a firebox of an incinerator equipped with an afterburner and scrubber.
NOTE:
Destruction by chemical decomposition is recommended for dinitro, trinitro and other compounds with explosive potential. Add the material, slowly, while stirring, to 30 times its weight of a solution prepared by dissolving 1 part sodium sulphide in 6 parts water. For unstable acidic materials (eg. picric acid) dissolve in 25 times its weight in a solution from 1 part sodium hydroxide and 21 parts sodium sulphide in 200 parts water. Some hydrogen sulphide and ammonia is evolved.
ENVIRONMENT:

 


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