Ethylenediamine reagent

Ethosuximide 254,255 Ethoxyquin 106,108 Ethylamphetamines 45 Ethylenediamine reagent 392 N -Ethyl-N - methanesulfonamidoethyl)-2-methyl-1,4-phenylenediamine reagent 368... 

Approximately 0.5 g (1.7 mmole) of CrBr3, as the dark-green oil derived in Section A, is added dropwise to 15 mL of colorless ethylenediamine (reagent grade). An exothermic reaction occurs, following which the mixture is allowed to cool to room temperature, resulting in the formation of yellow crystals. These are collected, washed with diethyl ether (2 X 25 mL), and dried in vacuo. Yield 0.74 g (1.55 mmole, 90%). Anal. Calcd. for C6HMN6CrBr3 Cr, 11.1 Br, 51.2. Found Cr, 11.1 Br, 51.4%. 

F. Ethylenediamine Reagent is a 65-68% aq soln of H2N.CH2.CH2.NH2. For testing, place a small amt(ca 0.05g) of the unknown material in an indenture of a white porcelain spot-test plate, add 2-3 drops of the reagent, stir and note the color. Many expls produce colors. 

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