Assertion: lignin | /r/HasProperty | insoluble
Facets:
value: in an acidic medium
type: LOCATION
Source sentences:
text: Because lignin is insoluble and resistant to chemical degradation, its accurate characterization in plant samples is technically challenging (2).
text: The lignin-containing liquor obtained from alkaline pulping processes is acidified and the lignin, being insoluble in an acidic medium, is precipitated and separated by filtration from the water-soluble salts which remain in the filtrate.