Assertion: crude phosphoric acid | /r/MadeOf | at least 45%
Facets:
Source sentences:
text: The recovery of P 2 O 5 in a yield of practically 100% from commercial crude phosphoric acid containing at least 45% P 2 O 5 by successively subjecting the crude acid to extraction, precipitation purification and ultimately electrothermal processing treatment is the goal targeted by the process of this invention.