燃やす
accident
adult
alkali
background
black
care
caucasian
caustic soda
chemical
chemicals
chemistry
clean
close
closeup
compress
corrosion
corrosive
damage
danger
dangerous
destroy
disease
dry
factory
flake
glove
health
hydroxide
industry
infected
infection
ingredient
laboratory
manufacturing
material
product
reaction
safety
scar
skin
skin care
sodium
solid
test
treatment
white
wound