Prev. Article Next Article Table of Contents

Lab-Expt

A Useful System for Microscale and Semi-microscale Fractional Distillation of Air-Sensitive Substances with High Boiling Points

Your current credentials do not allow retrieval of the full text.

Purchase the full-text

PDF/HTML,
figures/images,
references and tables,
(where available)

J. Alfredo Gutiérrez

Departamento de Química, Centro de Investigación y Estudios Avanzados (CINVESTAV-I.P.N.) Apdo. Postal 14-740, México D.F. 07000, México

J. Chem. Educ., 2001, 78 (5), p 653

DOI: 10.1021/ed078p653

Publication Date (Web): May 1, 2001

Section:

History, Education, and Documentation

Abstract

A procedure to purify air-sensitive liquids with high boiling points is proposed. Attempts to purify those compounds in a conventional short-path distillation apparatus were unsuccessful. The heat required for the vapors to overcome the relatively large vertical distance before reaching the condenser promotes their decomposition. A horizontal distilling apparatus that avoids extreme refluxing and can efficiently separate the fractions of a mixture was designed to purify these kinds of substances.