Cast-forming composition

In a composition for forming orthopedic casts and comprising a settable, water-wettable gypsum cement cast-forming composition, the improvement wherein said composition comprises a quarternary ammonium compound having bacteriostatic, wetting and accelerator properties, said compound being present in an amount of about 0.025% to about 1.5% by weight based on the weight of the settable composition and said compound selected from the group consisting of benzalkonium halides and cetyl-trimethyl-ammonium halides.

In an orthopedic bandage comprising a woven or nonwoven fabric having applied thereto a settable, water-wettable gypsum cement cast-forming composition, the improvement wherein said composition comprises a quarternary ammonium compound having bacteriostatic, wetting and accelerator properties, said quarternary ammonium compound selected from the group consisting of benzalkonium halides and cetyl-trimethyl-ammonium halides and being present in an amount of at least about 0.025% by weight based on the weight of the settable composition and less than that which would cause foaming.

In an orthopedic bandage comprising a woven or a nonwoven fabric having applied thereto a settable, water wettable gypsum cement cast-forming composition, the improvement wherein said composition comprises a quarternary ammonium compound having bacteriostatic, wetting and accelerator properties, said compound being present in an amount of about 0.025% to about 1.5% by weight based on the weight of the settable composition and said compound selected from the group consisting of benzalkonium halides and cetyl-trimethyl-ammonium halides.