Question

2. Calculate the powdered drink. The Lethal dose (LD50) is the amount of an ingested substance that will kill 50 percent of the test sample. It is usually expressed in mg of substance per kg of body weight (mg/kg). FD&C Blue Dye #1 has an LD50 of 300 mg/kg. Determine the mass of blue dye that would be required to reach the LD50 for a 150lb person. 3. Dyes have very high molar absorptivity. Why is this an advantage for their use in food products? 4.

Answer 1

Molecular mass of blue dye = 792.86 g 0.8 g in 8 fl oz of drink 1 fl oz = 29.57 ml 8 fl oz = 236.56 ml Molarity = weight/molecular weight times 1000/V (ms) = 0.8/792.86 times 1000/236.56 ml = 0.00426 M uparrow Amount of blue dye