ZONYLcan keep you from throwing money away on less expensive wetting agents.

Pound for pound, ZONYL® fluoro-surfactants cost considerably more than hydrocarbon surfactants.

But, you'll use so little ZONYL to achieve superior wetting, you could wind up cutting your wetting agent costs in half. In most applications, powerful ZONYL surfactants are effective at con­centrations as low as 50 to 1,000 ppm (0.005 to 0.1 %). You can even wet TEFLON*

In addition to high efficiency, ZONYL fluorosurfactants also possess high degrees of chemical and thermal stability. Therefore, ZONYL can be used in applications where hydrocarbon sur­factants would decompose—in strong

acids or concentrated alkalies, or at high temperatures. And the versatile ZONYL family includes fluorosur­factants of each ionic type—cationic, anionic, nonionic, and amphoteric.

Find out how you can keep from being soaked by less efficient wetting agents. Use this coupon to request your 16-page technical brochure on ZONYL fluorosurfactants.

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Start cutting surfactant costs right now. Complete, clip, and mail this coupon for your copy of our 16-page· technical brochure on ZONYL fluorosurfactants. Mail coupon to: Du Pont Company, Room 25075E, Wilmington, DE Î9898. **Γ\

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:o *Reg. U.S. Pat. & Tm Off. for Du Pont's f luorocarbon resins.

CIRCLE 4 ON READER SERVICE CARD Jan. 17, 1977 C&EN 29