ISSN print edition: 0366-6352
ISSN electronic edition: 1336-9075
Registr. No.: MK SR 9/7
Alkali sulfite lignin. II. The composition and the functional groups
Forschungsinstitut der Zelluloseindustrie in Bratislava
Abstract: cf. C.A. 49, 7240g. Alkali sulfite lignin (I) obtained by heating sulfite liquor with NH3 under pressure contains organically bound N and a decreased amt. of S. The N is bound either by addn. to the enol bond or by replacement of a sulfite group. The presence of keto-enol configuration can be proven by the pptn. of I with HI as a halogen deriv. of lignin. The amt. of MeO in I (1 in each C9 building stone) remains about the same.
Full paper in Portable Document Format: 105a300.pdf (in Slovak)
Chemical Papers 10 (5) 300–309 (1956)