- it can be used to dechlorinate tap water, and it has no effects on plants because it neutralizes when it comes into contact with the chlorine in water.
- - It can lower chlorine levels in swimming pools and spas following super chlorination.
- - It is used in the tanning of leather.
- - It can treat cyanide poisoning.
- - As a component in hand warmers and other chemical heating pads that produce heat by exothermic crystallization of a supercooled solution