sodium carbonate

When potassium or sodium carbonate is added, a blue dye known as litmus, much used as an “indicator,” is produced.

By directly precipitating a solution of the chloride with sodium carbonate, and washing and drying the powder as before.

A tin vessel provided with two tubulures, is filled with tobacco, which is previously damped with sodium carbonate.

Concentrate bath, make alkaline by sodium carbonate, and add aqueous solution of oxalic acid neutralised with sodium carbonate.

Suspend zinc in solution, then boil two or three hours; wash on filter, dry, fuse with borax and sodium carbonate.

Large crystals of sal soda containing but 37% sodium carbonate are formed.

To two quarts of warm water add one teaspoonful of sodium carbonate (washing soda).

These consist of sodium carbonate, sodium chloride or common salt and sometimes lime.

Dissolve the sodium carbonate and borax in water and when dissolved add the glycerine and stir.

Some of the affected leaves were detached and fused with a mixture of sodium carbonate and potassium nitrate.