Mild neutralizing agent for pH-sensitive wet blue Syntan NN 555 is a mild neutralizing agent for pH-sensitieve Wet Blue. Suitable applications include all leather types. Characteristics Syntan NN 555 has strong de-acidifying properties even at relatively low pH values. Syntan NN 555 creates the conditions for obtaining tight grained leathers even from sensitive material. TDS request Request a TDS of product TDS Sample request Request a sample of product Request