Sodium chloride (NaCl) is a well-kn

Sodium chloride (NaCl) is a well-known example of caking material.
When used as table salt, caking can easily be prevented by adding some
rice to a salt shaker. However, most of the sodium chloride produced is
used by the chemical industry for the production of chlorine gas (Cl2) by
electrolysis, for which many tonnes of salt are shipped. At this scale,
caking must be prevented by an anticaking agent. For sodium chloride,
many anticaking agents are known [3]. Anticaking agents are usually
crystal growth inhibitors [4]: by inhibiting crystal growth the crystals
agglomerate much less. Since the 1950s, (sodium or potassium) ferrocyanide
([Fe(CN)6]4−) has been the most common anticaking agent for sodium chloride globally, and its influence on the growth of this
crystal was already studied in 1965