Assertion: kraft lignin | /r/HasProperty | insoluble
Facets:
value: in an acidic reaction medium
type: LOCATION
value: generally
type: DEGREE
Source sentences:
text: However, since kraft lignin is insoluble in acid solutions such as those of the disclosed acidic chromate solutions, the reaction must be performed in a heterogeneous two-phase system wherein only limited demethylation takes place.
text: Kraft lignins are generally water- and solvent- insoluble materials with a high concentration of phenolic groups.
text: The difficulties generally involve the fact that kraft lignin is insoluble in an acidic reaction medium, isolation of the demethylated lignin by precipitation and premature gelling of the demethylated lignin.
text: However, since kraft lignin is insoluble in acid solutions such as those of the disclosed acidic chromate solutions, the reaction must be performed in a heterogeneous two-phase system wherein only limited demethylation takes place.
text: The difficulties generally involve the fact that kraft lignin is insoluble in an acidic reaction medium, isolation of the demethylated lignin by precipitation and premature gelling of the demethylated lignin.
text: Kraft lignins are dark and insoluble in water and other solvents.