燃やす
accident
acid
alert
area
beware
caustic
chemical
chemistry
contaminated
corroded
corrosion
corrosive
danger
dangerous
dead
environment
equipment
flammable
gas
glove
hand
harmful
hazard
health
icon
illustration
industrial
iron
irritant
lab
label
laboratory
medical
oxidizing
poison
poisonous
protect
protection
radiation
reaction
risk
safety
sign
spill
sticker
substance
symbol
toxic