The left ventricular ejection fraction (LVEF) test rate is increasingly used as a quality of care indicator for pa-. tients with heart failure. Our study produced benchmark LVEF test rates in a Medicare fee-for-service.
Toluene is a very good solvent because, unlike water, it can dissolve many organic compounds. In many commercial products, toluene is used as a solvent that is present in paint thinners, nail polish remover, glues, and correction fluid. Toluene has many uses in different industries.
The toluidines is poorly soluble in pure water but dissolve well in acidic water due to formation of ammonium salts, as usual for organic amines. ortho-and meta-Toluidines are viscous liquids, but para-toluidine is a flaky solid.This difference is related to the fact that the p-toluidine molecules are more symmetrical.he difference between these three isomers is the position where the methyl group (-CH 3) is bonded to the ring relative to the amino functional group (-NH 2); see illustration of the chemical structures below.