US 12,065,628 B2
Stable nitric acid blends and uses thereof
Clay Purdy, Medicine Hat (CA); Markus Weissenberger, Calgary (CA); and Kyle G. Wynnyk, Calgary (CA)
Assigned to DORF KETAL CHEMICALS FZE, Fujairah (AE)
Filed by Fluid Energy Group Ltd., Calgary (CA)
Filed on Jun. 3, 2021, as Appl. No. 17/338,361.
Claims priority of application No. 3081989 (CA), filed on Jun. 5, 2020.
Prior Publication US 2021/0380906 A1, Dec. 9, 2021
Int. Cl. C11D 3/02 (2006.01); C11D 1/00 (2006.01); C11D 3/04 (2006.01); C11D 3/26 (2006.01); C11D 3/34 (2006.01); C11D 3/39 (2006.01); C11D 3/395 (2006.01); C11D 11/00 (2006.01)
CPC C11D 3/042 (2013.01) [C11D 1/002 (2013.01); C11D 3/26 (2013.01); C11D 3/3902 (2013.01); C11D 3/3937 (2013.01); C11D 3/3947 (2013.01); C11D 11/0041 (2013.01)] 16 Claims
 
1. A modified aqueous acid composition consisting of:
nitric acid;
sulfuric acid;
a compound having an amine moiety and a sulfonic acid moiety;
a peroxide; and water.