Rodys O is a 40% aqueous solution of sodium salt of naphthalenesulfonic acid polycondensates with formaldehyde. It has a high degree of polymerization and is a polymeric dispersant compound. It enables the formation of time-stable dispersions with minimal coagulates of dispersed particles. Rodys O has low concentrations of free formaldehyde and naphthalene, making it suitable for various applications such as creating dispersions in water systems and agricultural chemistry. It is a general-purpose dispersant that produces stable