Assertion: calcium fluoride | /r/HasProperty | insoluble
Facets:
value: almost completely
type: DEGREE
value: very
type: DEGREE
Source sentences:
text: Calcium fluoride is very insoluble.
text: 1966 Testimony presented by John J. Miller, Ph.D, Chicago, Illinois at fluoridation hearings in San Jose, California on March 11, 1966, included the following statement: "Fluoride acts to tie up magnesium - forming magnesium fluoride - an insoluble compound which thus prevents the essential enzyme from using magnesium.
text: The majority of toothpastes contain calcium minerals[citation needed]; over time these react with sodium fluoride to form calcium fluoride, which is almost completely insoluble and thus ineffective for tooth protection.