Dial (soap) - Wikipedia
History. Dial was developed by a chemist from Armour and Company, a meat-packing company, and introduced in the Chicago market in 1948. Armour had produced soap since 1888; its laundry soap was made from tallow, a by-product of Armour's meat production processes. Dial was made antibacterial by the addition of hexachlorophene, referred to by the company as AT-7.