Assertion: titanium dioxide | /r/HasProperty | purified
Facets:
value: further
type: MANNER
Source sentences:
text: However, it must be purified before it can be used in paints or lipsticks, because the natural form contains to much iron.
text: If necessary, the titanium dioxide produced in step h) may be further purified.
text: Although the 98% titanium dioxide was not further purified, it is believed that the additional purification process described above can be used to produce greater than 99.99% titanium dioxide from the 98% titanium dioxide material.
text: If necessary, the titanium dioxide produced in step h) may be further purified.
text: Although the 98% titanium dioxide was not further purified, it is believed that the additional purification process described above can be used to produce WO 02/48412 PCT/IB01/01020 -11 greater than 99.99% titanium dioxide from the 98% titanium dioxide material.
text: Although the 98% titanium dioxide was not further purified, it is believed that the additional purification process described above can be used to produce greater than 99.99% titanium dioxide from the 98% titanium dioxide material.