FIELD: steel treatment.
SUBSTANCE: invention relates to the use of N-(1,3-dithiolan-2-ylidene)-5-(2-phenylethynyl)-1,3,4-thiadiazol-2-amine, having the formula
,
as a corrosion inhibitor for low-carbon steel in a 15% solution of hydrochloric acid to protect against corrosion of gas and oil field equipment during acid treatments, metal pickling and descaling.
EFFECT: N-(1,3-dithiolan-2-ylidene)-5-(2-phenylethynyl)-1,3,4-thiadiazol-2-amine exhibits a protective effect (82-90%) on steel “Ст3” (“ГОСТ 380-2005”) in the concentration range of 50-200 mg/l in 15% aqueous solutions of HCl.
1 cl, 1 tbl, 2 ex
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|---|---|---|---|
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|
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|
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|
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|
RU2806257C1 |
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|
RU2810477C1 |
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|
RU2757778C1 |
| ACID CORROSION INHIBITOR OF STEEL ST3 | 2023 |
|
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|
RU2805531C1 |
