Esters Flashcards
What are esters formed from?
An alcohol and a carboxylic acid
What is used when making esters?
An acid catalyst (eg, concentrated sufuric acid)
alcohol + carboxylic acid ->
Ester + water
How do you from the names of esters?
End in ‘-oate’. The alcohol forms the first part of the ester’s name and the acid forms the second part.
Ethanol + Methanoic acid ->
Ethyl Methanoate + water
Methanol + Propanoic acid ->
Methyl Propanoate + water
Esters [ ] nice but don’t mix well with [ ]
Smell
Water
Why are esters ideal for perfumes?
Many esters have a pleasant smell - often sweet and fruity. They’re also volatile.
Why does ester’s volatility make them potentially dangerous?
They are flammable (or even highly flammable)
Esters are not as soluble as [ ] and [ ].
Alcohols and carboxylic acid
Esters mix well with [ ] and other [ ]
alcohols
organic solvents
What are esters used in?
Flavourings and perfumes ,aromas, ointments and solvents
What does inhaling the fumes from esters do?
Irritates mucous membranes in the nose and mouth
Ester fumes are [ ] than air and very [ ] . Flammable vapour + naked flame = [ ]
heavier
flammable
flash fire
some esters are [ ], especially in large doses. Some people worry about health problems associated with [ ]such as esters
toxic
synthetic food additives
