The strong bases, like lye and caustic soda, are also called alkalies.
It is a great advantage to have the caustic soda solution hot.
Horn may be softened, and ultimately dissolved in caustic soda.
A ley of caustic soda, like the former, sometimes with less alkali.
A solution of caustic soda is employed, about 16 to 20 per cent.
If the colour is blue or violet, boil ...