C - Chemistry – Metallurgy – 23 – F
Patent
C - Chemistry, Metallurgy
23
F
149/25
C23F 1/28 (2006.01) C23G 1/08 (2006.01) C23G 1/24 (2006.01) F28G 9/00 (2006.01)
Patent
CA 2018153
ABSTRACT OF THE INVENTION An iron oxide cleaning composition and method for using these compositions as disclosed. This cleaning process uses formaldehyde sulfoxylate reducing agents in combination with hydrolyzable tanning extracts and chelating agents to remove deposited iron oxide from metal surfaces, particularly those surfaces exposed to recirculating cooling waters.
Dubin Leonard
Nalco Chemical Company
Smart & Biggar
LandOfFree
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