C - Chemistry – Metallurgy – 01 – B
Patent
C - Chemistry, Metallurgy
01
B
149/12, 23/180
C01B 7/19 (2006.01)
Patent
CA 1042325
ABSTRACT OF THE DISCLOSURE Sulfur deposits on the walls of HF process equipment can be removed by periodic treatment with SO3, preferably as 20 to 35% oleum. - 1 -
210086
E.i. Du Pont de Nemours And Company
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