Mild neutralizing agent for all types of furs The leather chemical Syntan NN 555 is a mild neutralizing agent for all types of furs. Syntan NN 555 can be used as a single neutralizing agent or in combination with sodium bicarbonate. This leather chemical has strong de-acidifying properties. The leathers are well and evenly neutralized throughout the cross section. Characteristics Syntan NN 555 can be used as a single neutralizing agent or in combination with sodium bicarbonate. Syntan NN 555 has strong de-acidifying properties. The leathers are well and evenly neutralized throughout the cross section. TDS request Request a TDS of product TDS Sample request Request a sample of product Request