Identification of Solid Unknown 18 S Solubility Test Results: Because unknown 18 S was soluble in NaOH but not in NaHCO3, it could be determined that the unknown compound was a phenol. Classification tests were performed to ensure the compound was a phenol. Classification Test Results: The classification tests performed confirmed that Unknown 18 S was a phenol. Both tests for the phenol functional group yielded a positive result. Possible Compounds: Derivative: 4-nitrophenol α-Naphthylurethane derivative Observed MP 149.6ºC Literature MP […]
Herbicide Effects of Trifluralin and N-(n-butyl)-2,4-Dinitroaniline Herbicide Solutions Introduction The purpose of this lab is to test the potency of trifluralin and N-(n-butyl)-2,4-Dinitroaniline as herbicides and the resistance of velvetleaf and crabgrass against them. This procedure consists of soaking crabgrass and velvetleaf seeds in various concentrations of the herbicide solutions and analyzing results after at least five days have passed. Dinitroaniline herbicides were first discovered in 1964. They function by inhibiting cell division in the root cells of susceptible weeds, […]
Synthesis of and Fabric Test for Methyl Orange, and an Investigation of Acid-Base Properties of Textile Dyes By: Nick Fastuca Abstract: The azo-dye methyl orange was synthesized in two steps from sulfanilic acid and n,n-dimethylaniline with 52% yield. The reaction product was purified by recrystallization with water as the solvent. The synthesized methyl orange was tested to see how well it dyed 13 different kinds of fabric using a piece of Multifiber #43 cloth. The dye bound most strongly to wool […]
ANALYTICAL TECHNIQUES FOR THE COMPOSITION OF PETROLEUM ETHER FRACTIONS By: Mohammad Ali Salik AIM: The aim of this case study is to choose a suitable instrumental analytical method to investigate the composition of the different petroleum ether fractions. When choosing the analytical technique, a lot of factors need to be looked at such as cost, sensitivity (level of detection), resolution and availability of instrumentation. INTRODUCTION: Petroleum ethers are laboratory solvents which basically contain a mixture of alkanes – both branched and […]
The Wittig Reaction – Formal Report By: Alexander Davies Introduction Alkenes are important initial building blocks in many organic synthesis routes, as shown by Scheme 1.1 It is paramount, therefore, that we have the ability to synthesize alkenes from other readily available, cheap material. Scheme 1: Examples of one-step reactions from an alkene starting material. This illustrates the huge diversity of olefin products; and as such the need to be stereoselective in how one can synthesise said functionality within a molecule. […]
Introduction The purpose of this lab is as follows: 1) to learn about coordination compounds through the synthesis and analysis of a potassium ferrioxalate hydrate salt and 2) to use the techniques developed in previous labs to determine the empirical formula of the ferrioxalate salt. The ferrioxalate salt has the empirical formula Kx[Fey(C2O4)z]•nH2O. The values of x, y, z, and n are ascertained through determining the percentages of K, Fe, C2O42-, and H2O; converting these percentages to grams and then […]
