C - Chemistry – Metallurgy – 01 – B
Patent
C - Chemistry, Metallurgy
01
B
23/72
C01B 25/238 (2006.01)
Patent
CA 1215522
Abstract: TREATMENT OF CONCENTRATED PHOSPHORIC ACID The calcium content of high purity concentrated phosphoric acid is reduced to not more than about 2 ppm by contacting the acid with a strong cation exchange resin.
489803
Annarelli Dennis C.
Dominiani Frank J. Jr.
Astaris Llc
Osler Hoskin & Harcourt Llp
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