Assertion: water glass | /r/HasProperty | produced
Facets:
value: commonly
type: DEGREE
Source sentences:
text: It is commonly produced by roasting various quantities of soda ash (sodium carbonate, Na 2 CO 3 ) and silica sand (a ubiquitous source of SiO 2 ) in a furnace at temperatures between about 1,000 and 1,400 °C (approximately 1,800 and 2,500 °F), a process that gives off carbon dioxide (CO 2 ) and produces sodium silicate (Na 2 SiO 3 ; usually represented by its two constituents, Na 2 O and SiO 2 ):