Assertion: acetic anhydride | /r/AtLocation | the united states
Facets:
value: annually
type: TEMPORAL
Source sentences:
text: As with acetic acid, the primary use of acetic anhydride is used in the manufacture of cellulose acetate for films and plastic goods; about 75 percent of the acetic anhydride produced annually in the United States is used for this purpose.
text: The primary use of acetic anhydride is used in the manufacture of cellulose acetate for films and plastic goods; about 75 percent of the acetic anhydride produced annually in the United States is used for this purpose.