Chemical .
Phosphate salt:sodium-silicon fluoride,sodium tripoly phosphate,SHMP,SAPP,PPA,etc.,
Barium carbonate and other barium salt such as barium sulphate,barium chloride,and barium hydroxide.
Washing chemicals.
Sodium Nitrate.
Carbopol.
Calcium carbide.
Benzalkonium Chloride.
Carbomer-940.
Technical Gelatine.
Germanium oxide.