Why Old Aspirin Smells Like Vinegar

Aspirin is one of the medications that are used toWhen aspirin starts to decompose, its molecules
reduce pain, inflammation and temperature. It haswill separate into salicylic acid and acetic acid.
been used for several decades and still remains toHaving acetic acid as the product of
be a choice even after the introduction of otherdecomposition of aspirin gives it a similar odor as
non-steroidal anti-inflammatory drugs (NSAIDs).that of vinegar (which has diluted amounts of
Although at present, many medical professionalsacetic acid as its component).
just prescribe or recommend aspirin for peopleHow to Store Aspirin
with certain heart problems since aspirin has beenTo slow down the decomposition process of
proven to reduce the risk of blood clotting.aspirin, it must be stored in suitable conditions.
Because aspirin is present in many home medical1. Store the container in a cool and dry place.
kits, it can be observed that after some time ofExposure to moisture will facilitate the hydrolysis
storage, aspirin will start to smell like vinegar. Theof the aspirin molecules into its decomposition
chemical explanation for this can be simplified byproducts.
understanding the chemical natures of aspirin and2. Keep the container tightly closed.
vinegar.Exposure to air provides the oxygen that is
The Chemical Nature of Aspirinrequired for the oxidation of aspirin into acetic acid
Aspirin is chemically known as acetyl salicylic acid.and salicylic acid.
After some time, or when stored in non ideal3. Keep aspirin (and other medications) away
conditions, it will easily deteriorate into acetic acidfrom areas in which there is strong sunlight.
and salicylic acid even without the presence ofStrong lighting conditions can also hasten the
other chemicals.deterioration of many medications. They are best
The Chemical Nature of Vinegarstored in amber bottles.
Vinegar came from the fermented juices of fruitsSeveral years after the manufacture of aspirin, it
that contain sugars. The initial fermentation of theis expected to slowly deteriorate and lose ifs
freshly extracted juices will result to the creationefficiency. To slow down the deterioration
of wine. If the fermentation is allowed to continue,process, follow the proper storage procedures.
the alcohol in the wine will further be convertedAnd if you have aspirin tablets that smell strongly
into acetic acid. Acetic acid gives that sour flavorof vinegar, discard them. Just go to the nearest
and distinct odor to vinegar and related products.drugstore. Aspirin rarely goes out of stock.
Why Aspirin Smells Like Vinegar