Assertion: carbon dioxide | /r/ObjectUse | used in the manufacture of dry ice
Facets:
value: in the united states
type: LOCATION
Source sentences:
text: Most carbon dioxide used in the manufacture of dry ice in the United States is derived from refinement of gases given off during the refinement of petroleum and ammonia.
text: Recently, the federal government set fairly stringent standards for the purity of carbon dioxide used in the manufacture of dry ice, causing manufacturers to certify and test the liquid carbon dioxide used, as well as the purity of the manufactured product.