DESCALING PROMOTION ADDITIVE FOR ALLOY STEEL, ACID CLEANING LIQUID COMPOSITION USING THE SAME, AND ACID CLEANING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a descaling promotion additive capable of swiftly performing the descaling of alloy steel, and further having no generation of harmful gas such as hydrogen sulfide, and an acid cleaning method.;SOLUTION: Provided is a descaling promotion additive comprising one or more kinds selected from benzyl thiocyanate, trimethyl thiourea, tetramethyl thiourea and 3-mercapto-1-propane sulfonic acid, and also provided is an acid cleaning composition containing the promotion additive.;SELECTED DRAWING: None;COPYRIGHT: (C)2017,JPO&INPIT