Assertion: phosphoric acid's impurity | /r/HasProperty | sio
Facets:
Source sentences:
text: The same vessel made of polyethylene as was used in Example 1 was charged with 700 ml. of wet process phosphoric acid obtained from Togo phosphate rock and containing 29.8% P 0 and impurities such as 2.6% S0 2.4% F and 1.7% SiO and was heated on a water bath to a temperature of about 60 C. 17.5 gr. of sodium carbonate and