… of wood pulp, whether or not concentrated, desugared or chemically treated, including lignin sulphonates, but …
Explanatory notes
… of wood pulp, whether or not concentrated, desugared or chemically treated, including lignin sulphonates, but … process , whether or not concentrated, desugared or chemically treated. Concentrated sulphite lye consists … paste, a blackish mass with a vitreous fracture (in this case, it is sometimes known as sulphite pitch or cellulose …