However, unlike ethanol, methanol is highly toxic and unfit for consumption. At room temperature, it is a polar liquid, and is used as an antifreeze, solvent, fuel, and as a denaturant for ethanol. It is also used for producing biodiesel via transesterification reaction.f as little as 10 mL of pure methanol is ingested, for example, it can break down into formic acid, which can cause permanent blindness by destruction of the optic nerve, and 30 mL is potentially fatal, although the median lethal dose is typically 100 mL (3.4 fl oz) (i.e. 1â2 mL/kg body weight of pure methanol).
Present Value of a Perpetuity (t â â and n = mt â â). For a perpetuity, perpetual annuity, the number of periods t goes to infinity therefore n goes to infinity. The. term in equation (11) goes to 0 and the 1/(1 + i) n in the second term also goes to 0 leaving just formula (5).
Present Value. If you understand Present Value, you can skip straight to Net Present Value. So $1,000 now is the same as $1,100 next year (at 10% interest). We say the Present Value of $1,100 next year is $1,000. Because we could turn $1,000 into $1,100 in one year (if we could earn 10% interest).et Present Value (NPV). To be a Net Present Value you also need to subtract money that went out (the money you invested or spent): 1  Add the Present Values you receive. 2  Subtract the Present Values you pay.