Lignin Content of Cellulose Products

Abstract

IN the working out of a new method of determination of cellulose, especially suitable for cereal straws, we have recently had occasion to determine the lignin contents of cellulose products obtained by various means. Chlorinations, either gaseous or in solution (as our new method involves) were continued until there was no trace of a characteristic red colour on the subsequent addition of sodium sulphite. In spite of this, however, the lignin contents of the products from a number of straws were, in general, between 2.5 and 3.0 per cent.