SOLUTION FOR CLEANING METALLIC SURFACES FROM HIGH- TEMPERATURE DEPOSITS Russian patent published in 2000 - IPC

FIELD: chemical industry. SUBSTANCE: surfaces of metallic products are cleaned from high-temperature deposits by treating them with solutions. Claimed solution comprises 4-6 wt. % of oxyethylidene diphosphonic acid, 0.5-0.7 wt. % of morpholine metanitrobenzoate, 4.4-6.6 wt.% of 25% aqueous ammonia and water, the balance, at pH of solution being 7+0.1. Use of the claimed aqueous solution makes it possible to increase effectiveness of action of solution to clean metallic surfaces from high-temperature deposits, reduce toxicity and aggressiveness of solution to constructional materials and reduce consumption of reagents by nearly 15 times. EFFECT: improved properties of the solution. 4 tbl