Lab Flashcards
Direct contact with concentrated acid can irritate the skin, eyes and respiratory system – 1-10% dilute solution is relatively safe – Concentrated glacial acetic acid should not be mixed with chromic acid, nitric acid or sodium/potassium hydroxide
acetic acid
Toxic when absorbed by the skin
– Can cause severe irritation of
the eyes, and is a potential
carcinogen
Aniline
A very dangerous chemical that is toxic when inhaled or ingested – Also carcinogenic and can affect the liver, reproductive organs, CNS, blood and GIT
chloroform
Should be stored away from acids, and should not be mixed with formaldehyde as this generates heat and toxic vapors that can be irritating to the respiratory system
ammonium hydroxide
Toxic by inhalation and by ingestion, and can cause severe irritation of the skin and eyes – Carcinogens and are corrosive to most metals
formaldehyde
Can cause severe irritation of
skin, eyes and respiratory
system, and is corrosive to
metals
Hydrochloric acid
Is a skin and eye irritant
– Not likely to cause significant
toxicity if used under standard
conditions
Ethanol
– Relatively safe when used
in quantities prescribed for
histology
Periodic acid
– Corrosive to eyes and
mucous membranes
• Osmium tetroxide
– (liquid) can cost frost bite or
thermal (cold) burns
• Nitrogen
– Corrosive to skin, mucous
membranes and most metals
• Nitric acid
– Moderate skin and eye irritant
– Toxic by ingestion and inhalation
• Methanol
– Essentially harmless if used in
concentrations less than 5%
Hydrogen peroxide
– A strong oxidant, eye irritant and corrosive to most metals – Do not mix bleach with formaldehyde or diaminobenzidine (DAB)
• Sodium hypochlorite (liquid
chlorine bleach)
– Strong irritant to skin, eyes and
respiratory system
• Sulfuric acid
