Organic Bases: Explained Completely
by : Rahul Sharma
Organic Bases:
Organic bases are Triethanolamine, N(CH2CH2OH)3, Ethylenediamine (H2NCH2)2 etc.
Triethanolamine:
Triethanolamine, N(CH2CH2OH)3, is a strong organic base miscible with water, methanol and acetone. The pH of its 0.1N aqueous solution is 10.5. Analytical grade N(CH2CH2OH)3 is a highly hygroscopic and viscous liquid with a pale yellow or no colour. Its melting point is between 18 and 21 ºC. Its density is about 1.12.
Ethylenediamine:
Ethylenediamine, (H2NCH2)2, is a strong organic base miscible with water and alcohol. It is a colourless and viscous liquid with a density of 0.898 and a melting point of 8 ºC. The pH of a 25% aqueous solution is 11.5. Like triethanolamine, it is an aliphatic amine soluble in water and, therefore, can be determined by the acid–base titration with methyl orange as an indicator.
