Refined Naftalan oil must comply with the pharmacopoeial monograph FS 42-1957-82. It is a thick, syrup-like liquid of black color with a greenish fluorescence, having a characteristic odor and a weakly acidic reaction. It does not mix with water. It mixes in all proportions with glycerin, ceresin, oils, fats, paraffin, and wax (SP-X, p. 75). Density is 0.918-0.958 (SP-X, p. 772). The initial boiling temperature must be not lower than 160 degrees Celsius (SP-X, p. 769). Water content is not more than 0.5% (SP-X, p. 772).

Refined Naftalan oil was mainly used for the preparation and production of medicinal products. Yellow Naftalan ointment, bismuth-tannin-zinc-naftalan ointment, Naftalan oil, salicylo-naftalan ointment, sulfur ointment on Naftalan, “thiolan” ointment, boron-zinc-naftalan paste, zinc-naftalan paste, sulfur-zinc-naftalan paste, ichthyol-zinc-naftalan paste, Naftalan phytoncide emulsion, refined Naftalan oil, Naftalan, Naftalan oil pastilles, medicinal mastic – more than 200 product names.