The first test performed was the nitration test 10 drops of colorless test compounds (cyclohexane, cyclohexene, toluene and naphthalene) were placed in separate test tubes 10 drops nitrating reagent (h 2 so 4 /hno 3) was added to each of the test compounds in the test tubes, and the test tubes were shaken in this process, only cyclohexene, toluene and naphthalene changed its color of solution, and cyclohexane remained colorless. In nitration benzene and toluene are unsaturated hydrocarbons but are not actively unsaturated a strong oxidizing agent was used which is kmno4 and this reaction will signify that there is an oxidation reaction formed iv. Test for aromaticity: nitration the next test performed was the test for aromaticity through nitration caution concentrated h2so4 is corrosive and dehydrating 2 ml concentrated hno3 is of conc hno3 was placed in an erlenmeyer flask. Next, the selection deals with the nitration of saturated, aromatic-aliphatic and unsaturated hydrocarbons with nitric acid the text also talks about the nitration with nitrogen oxides, along with the nitration of amines.
This test method is designed as a fast, simple spectroscopic check for monitoring of nitration in in-service petroleum and hydrocarbon-based lubricants with the objective of helping diagnose the operational condition of the machine based on measuring the level of nitration in the oil. Nitration can cause premature thickening of the engine oil common causes of nitration include inefficient exhaust of the combustion products , improper air-to-fuel ratio, low operating temperature, and leaking piston seals.
An example of electrophilic aromatic substitution is the nitration of salicylic acid: coupling reactions in coupling reactions a metal catalyses a coupling between two formal radical fragments.
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Without reactivity or showed negative results to any test procedures is a saturated, aliphatic hydrocarbon (ie hexane) with a positive result in the bromination and oxidation reactions but negative in nitration reaction is an. Nitration of hydrocarbons and other organic compounds tackles various concerns in the process of substituting hydrogen atoms in the aromatic or heterocyclic nucleus, or in saturated hydrocarbon, by nitro groups.
Nitration reaction differentiated aliphatic (ie: hexane, cyclohexene) from aromatic (ie: naphthalene, toluene) hydrocarbon, bromine test detected the presence of unsaturation (ie:double bond in cyclohexene) while oxidation reaction identified if the aromatic hydrocarbon possessed substituents (ie: alkyl group in toluene.
Classification tests for hydrocarbons - free download as word doc (doc), pdf file (pdf), text file (txt) or read online for free. Includes oxidation and may also include nitration and sulfation depending on the atmospheric oxygen reacts with the hydrocarbons in the lubricant to form carboxylic acids these acids are weak, but given enough time the concentration can become high enough to cause severe corrosion of machinery parts is a critical parameter to test for.