กระดาษและผลิตภัณฑ์กระดาษ
เอกสารมาตรฐาน
สหรัฐอเมริกา
TAPPI
T 282 om-19
Hexeneuronic acid content of chemical pulp
2019
4
offline
This method describes a procedure to determine hexeneuronic acid groups (HexA) in chemical pulps. HexA
affects the kappa number determination by reaction with permanganate, and can react with certain bleaching
chemicals, e.g. chlorine dioxide and ozone, but not with some others such as oxygen and peroxide.