carbonat.jpg carbonat.jpg

Sodium carbonate

CAS Registry Number (CASRN):

497-19-8 ,

Units of original limits:

mg/m3 ,

Conc dep:

N ,


Sodium carbonate ,


Na2CO3 ,

CAS Registry Number (CASRN):

497-19-8 ,

SAX Number:

SFO000 ,

Units of original limits:

mg/m3 ,

Conc dep:

N ,

p to m:

4.33196 ,


3 ,

state at 25 °C:

S hygr ,

Molar mass (g/mol):

105.99 ,

Melting point (°C):

851 ,


Sodium carbonate

Sodium carbonate is either found naturally or is manufactured from sodium chloride (common salt). It has many uses, notably to make glass.

Uses of sodium carbonate

Two forms of sodium carbonate (soda ash) are used -heavy and light. The light form is obtained first and some is then converted into the heavy form. Light sodium carbonate contains less than 0.5% sodium chloride. Heavy sodium carbonate is obtained by hydrating light sodium carbonate to the monohydrate (Na2CO3.H2O) and then dehydrating it to give a product with an increased crystal size and density.

The two grades have different uses.

The major uses of heavy sodium carbonate are as a solid, particularly in making glass, where it is used as a flux in the melting of silica (sand).

The uses for light sodium carbonate are traditionally where the chemical is required in solution.

Manufacture of sodium carbonate

There are two main sources of sodium carbonate:

a) from salt and calcium carbonate (via the ammonia soda (Solvay) process)

b) from sodium carbonate and hydrogencarbonate ores (trona and nahcolite)

  • captcha

contact with us


Before Tavanir Junc., Valiasr St., Tehran, Iran

00982143029 - 00982188642911 - 00982186080154 - 09120379874 -


subscribe to newsletter: