For
long
term
storage,
we
suggest
that
stearic
acid
be
stored
as
supplied
at
-20°C.
It
should
be
stable
for
at
least two years.
Stearic acid is supplied as a crystalline solid. A stock solution may be made by dissolving the stearic acid in
an organic solvent purged with an inert gas. Stearic acid is soluble in organic solvents such as ethanol, DMSO,
and dimethyl formamide. The solubility of stearic acid in these solvents is
approximately
20, 10, and 30 mg/
ml, respectively.
Stearic acid is sparingly soluble in aqueous solutions. To enhance aqueous solubility, dilute the organic
solvent solution into aqueous buffers or isotonic saline. If performing biological experiments, ensure the
residual amount of organic solvent is insignificant, since organic solvents may have physiological effects at
low concentrations. We do not recommend storing the aqueous solution for more than one day.