He kawakawa kaha a Caustic Soda, he kaha te waikura, te tikanga he tawerewere, he paraka ranei, he ngawari ki te wairewa ki te wai (he werawera ka rewa ki te wai) ka hanga he otinga kawakore, he whakaheke.
I roto i te moepuku, he ngawari ki te tango i te kohu wai (deliquescent) me te hauhā (deterioration) i roto i te rangi, a ka taea te tapiri ki te waikawa pūhaumāota ki te tirohia mehemea kua kino.