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42 Cards in this Set
- Front
- Back
3 aspects to wearing gloves in lab
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-match glove to what your going to do
-know your going to be more clumsy -be aware there are different types of gloves for specific chemicals |
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In case of fire
for small fire... |
break the seal and remove the pin
stay 8 to 10 ft. from fire press lever and aim at base of flames sweep the base of fire with a steady stram of short birsts |
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Compressed gases
what has to be done when you transport a cylinder? |
When you transport a cylinder it has to be capped.
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How do you use the right regulator?
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There is a specific regulator for each specific gas
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What should always be done with high pressure cylinders?
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High pressure cylinders should be firmly tied into place
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3 ways chemicals can enter the body
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1)skin and eye contact
2)inhalation 3)swallowing |
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What do you do when chem gets in your eyes?
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wash with plain water for 15 min. minimum
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Which is more dangerous to get in the eye; acids or bases?
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Bases
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Dangerous chemicals
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-Hydrocarbons b/c they get oxidized and get CO2 as a biproduct
-Radioactive: Uranium -Oxidizers: peroxides, Cr compounds (high oxid. #), Mn compounds, nitrates, NOx, halogens, bleach -Heavy metals : Pb, Hg |
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Acetone CH3-CO-CH3
why is the chemical dangerous? |
flammable, explosive hazard
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methanol
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highly toxic, highly flammable and explosive
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ethanol
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flammable, central nervous system depressant
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glycerol
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do not confuse with ethyl gylcol--highly toxic, mildly toxic
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Ammonia--NH3
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extremely irritating and corrosive to eyes
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Nitric Oxide NO
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toxicity is due to ready oxidation to NO2
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Nitrogen Dioxide NO2
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Strong oxidizer, can cause severe lung damage
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Oxidants
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Ammonium Nitrate NH4 NO3
Lead Nitrate Pb(NO3)2 Iron Nitrate Ammonium dichromate Hydrogen Proxide H2O2 |
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Halogens
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-most reactive nonmetal
-HF is really bad -all halogens are really bad |
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Metals
Na |
very water reactive
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metals
K |
one of the most reactive metals
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Metals
Mg |
reacts with oxidizing agents
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Metals
Hg |
highly toxic by skin contact, absorption, or inhalation
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Metals
Pb |
systemic poison that affects the nervous system, enters body through inhalation or ingestion
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Handling Peroxidizable chemicals
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1)stored in dark and exclusion of air
2)must be tested for peroxide presence before heating or evaporating 3)sensitivity of most peroxides to shock and heat 4)date all peroxidizable chemicals when opened 5) don't use metal spatulas with peroxides |
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Strong reducers
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Hydrazine NH2
hydrides hydrogen sodium, lithium, potassium |
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water reactive
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sodium, lithium, potassium
Halides Hydrides LiAlH4 |
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To avoid hazardous chemical combos do what?
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use chemical reactivity sheet
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chemicals found in car
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anitfreeze--made from ethylene glycol
gasoline battery acid--sulfuric acid--extremely corrosive |
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chems found in backyard
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swimming pool chems
-chlorine, sodium carbonate |
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types of chlorinating agents
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inorganic->calcium hypochlorite, lithium hypochlorite, Sodium hypochlorite
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Pesticides
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inorganic->contain heavy metals->mercury, lead, arsenic, zinc->toxic to humans
-sodium borate used to kill cockroaches |
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Chems found in laundry room
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Bleach and ammonia
-mixing the two is a common accident |
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Misc around the house
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nail polish remover
kitty litter rug cleaner paint |
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Ethics
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principles of conduct governing individual or group
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Integrity
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firm adherance to code of moral values
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Types of radiation
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gamma- most penetrating-causes severe damage to internal organs
beta particles-if ingested my be absorbed by bones and cause damage alpha particles-can be shielded by skin but if ingested can be harmful |
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protection for shock
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insulating
grounding circuit breakers removal of jewelry inerlocks |
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Lazer Hazards
Lazer beam hazards |
eye and skin burns
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what protection is used when dealing with lasers?
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Goggles with side shields are preferred because they provide protection against back reflection and side entrance of stray laser beams.
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strong acids
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hydrochloric acid HCl
nitric acid HNO3 sulfuric acid H2SO4 hydrobromic acid HBr hydroiodic acid HI perchloric acid HClO4 |
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clean water act
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restoration and maintenance of surface waters through prohibition of discharge of toxic and non toxic pollutants
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Hazardous waste
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has characteristic of ignitability, corrosivity, reactivity, and toxicity
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