|
Dense soda ash
is a white,
odourless and
uniform product,
free from dirt
and other
foreign matter.
Physical and
chemical
properties
Soda ash has a
tendency to
absorb moisture
from the
atmosphere. The
moist soda ash
then starts
absorbing
atmospheric
carbon dioxide.
This phenomenon
of absorption of
moisture and
carbon dioxide
is known as
weathering.
After
weathering, soda
ash is likely to
contain
appreciable
moisture and
sodium
bicarbonate,
though its total
alkali content
does not change.
Soda ash has a
tendency to cake
when it comes
into contact
with moisture
and,
consequently,
becomes lumpy.
Chemical
formula: Na2CO3
O
| |
Structural
formula: Na
-- O -- C -- O
-- NA
Common names:
Sodium
carbonate,
calcined soda,
disodium
carbonate |
