alum

ફટકડી
definition
noun
It could also be treated by rubbing salt, brain or potash alum into the surface to produce a very pale leather.
a colorless astringent compound that is a hydrated double sulfate of aluminum and potassium, used in solution medicinally and in dyeing and tanning.
a fellow Wellesley alum
an alumnus or alumna.
translation of 'alum '
ફટકડી,
દ્રી ગંધકનો સફેદ ખનિજ ક્ષાર
example
a fellow Wellesley 'alum'
Astringent varieties contain 'alum' , which makes your mouth pucker when the fruits are eaten before they're fully ripe.
One site said that clarifying agents could control snails, so I sent my son to the chemist for 'alum' .
This, washed and then boiled, yielded aluminium sulphate, which, when ammonia was added, became 'alum' .
I have no idea how it's manufactured, but it's a kind of 'alum' , a double sulfate of aluminum in crystal salt form.
It could also be treated by rubbing salt, brain or 'potash alum' into the surface to produce a very pale leather.
Aluminium dross tailings were used to produce two types of 'alums' .
Several decades later the Englishman Davy attempted to obtain the metal hidden in 'alums' .
Credits: Google Translate