For
metal cleaning, removing the oxide layer on metal surface; Slightly
corrosive to metal than other inorganic acid, can be used for
boiler and ceramic cleaning, and sterilize bacterium in water; also
can be used for bleaching fiber, wood and paper. And remove nitrite
in tobacco, oil mine sludge acidification; used as raw materials
for coatings and PH strip, flame retardant for cotton fiber, curing
agent for resin, pesticide intermediates and raw materials for
various amino acid derivatives. As important ingredient in the
production of cyclamate.
