AHighlyEffective Stabilizer... HEYDEN
PROPYL GALL Serving Industry. . . through Finer Chemicals Benzaldehyde • Benzoates • Benzyl Chloride Bromides • Chlorinated Aromatics Chlorobenzenes • Creosotes • 2,4-D Formaldehyde • Formic Acid Glycerophosphates • Guaiacols Hexamethylenetetramine • Medicinal Colloids
HEYDEN
CORPORATION
Methylene Disalicylic Acid • Paraformaldehyde Parahydroxybenzoates • Penicillin Pentaerythritols • Propyl Gallate Quadrafos • Salicylates • Salicylic Acid Streptomycin
393 SEVENTH AVENUE, NEW YORK 1, N. Y. • CHICAGO 6 • PHILADELPHIA 3 • SAN FRANCISCO 11 • RUMFORD 16, R.I.