The acute oral LD50 value in rats was reported as 3.6 g/kg (Jenner, Hagan, Taylor, Cook & Fitzhugh, 1964) and as 4.8 g/kg, while the iv UD 50 in rabbits was reported as 50 mg/kg (Yamawkai, 1962). The acute dermal LD50 value in rabbits was reported as > 5 g/kg (Moreno, 1972).