Assertion: commercial grade boric acid | /r/MadeOf | impurity
Facets:
value: usually
type: DEGREE
Source sentences:
text: Commercial-grade boric acid usually contains an impurity (or impurities) causing aqueous and alcoholic solutions thereof to appear hazy, a fact which considerably impairs the usefulness and acceptability of the boric acid, especially for pharmaceutical purposes.
text: Commercial-grade boric acid usually contains an impurity (or impurities) causing aqueous and alcoholic solutions thereof to appear hazy, a fact which considerably impairs the usefulness and acceptability of the boric acid, especially for pharmaceutical purposes.