	US 12,405,256 B2
	Chemical hydrogen peroxide indicator
Wensheng Xia, Woodbury, MN (US); G. Marco Bommarito, Stillwater, MN (US); and Naiyong Jing, St. Paul, MN (US)
Assigned to Solventum Intellectual Properties Company, Maplewood, MN (US)
Appl. No. 17/594,256
Filed by Solventum Intellectual Properties Company, Maplewood, MN (US)
PCT Filed Apr. 21, 2020, PCT No. PCT/IB2020/053776 § 371(c)(1), (2) Date Oct. 8, 2021, PCT Pub. No. WO2020/217175, PCT Pub. Date Oct. 29, 2020.
Claims priority of provisional application 62/839,439, filed on Apr. 26, 2019.
Prior Publication US 2022/0163496 A1, May 26, 2022
Int. Cl. B01J 23/10 (2006.01); B01J 35/50 (2024.01); G01N 31/10 (2006.01); G01N 31/22 (2006.01)

CPC G01N 31/228 (2013.01) [B01J 23/10 (2013.01); B01J 35/50 (2024.01); G01N 31/10 (2013.01)]

11 Claims

1. An indicator article for detecting hydrogen peroxide, comprising

a substrate and an indicator composition deposited thereon, wherein the indicator composition comprises:

at least one indicator compound comprising 4,4′-diamino-2,2′-stilbenedisulfonic acid (DSSA); and

a catalyst comprising cerium (IV) oxide nanoparticles;

wherein the indicator composition comprises an optical property,

wherein a visually detectable change in the optical property of the indicator composition is associated with a presence of hydrogen peroxide.