Sulfonated Naphthalene Formaldehyde Powder can be used together with other concrete admixtures such as retarders, accelerators and air-entrains. It is compatible with most of the known brands, but we recommend to carry-out compatibility test under local conditions before using. The different admixtures should not be premixed but added separately to concrete.Our product Sodium salt of Sulfonated Naphthalene formaldehyde poly condensate sample display.