Determination of primary and secondary xanthate groups in cellulose xanthate

摘要

AbstractVarious kinetic methods for the determination of primary and secondary xanthate groups have been compared. With certain types of viscoses all methods give an excellent agreement and are superior to the purely chemical methods which are unreliable. The field of application of a kinetic method based upon decomposition in a slightly acid buffer is limited due to the appearance of a turbidity upon prolonged dexanthation. A modified technique in which the decomposition is carried out at elevated temperature in sodium hydroxide solution is both rapid and versatile.