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A case study on expired drugs: The potential corrosion inhibitory activity of expired labetalol drug in 1M HCl for plain carbon steel

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Title A case study on expired drugs: The potential corrosion inhibitory activity of expired labetalol drug in 1M HCl for plain carbon steel
 
Creator Gunasekaran, M
Srinivasan, P
Zulfareen, N
Venugopal, T
 
Subject Acidic medium
Corrosion inhibitor
Expired drugs
Labetalol
Mild steel
 
Description 180-186
In this work expired drug namely, labetalol has been used as a corrosion inhibitor in a stirred acidic medium (1M HCl)
with mass loss measurement and electro analytical techniques. . The efficiency of the inhibitor increases as the temperature
increases from 30-60°C. The results reveal that maximum inhibition efficiency is observed as 91.66% for 500 ppm.
Potentiodynamic polarization measurement implies that it perform as a mixed type inhibitor. FT-IR analysis prove that
corrosion product is formed on the mild steel surface. When compared with metal in IM HCl, it includes a shielding layer on
the surface of mild steel by controlling further attack of acid. SEM and SFM surface morphology study have also been
performed to confirm the effect of labetalol on metal. In addition to that, DFT is also carried out to analyse HOMO, LUMO,
ΔE and Mulliken charges
 
Date 2023-03-17T10:15:47Z
2023-03-17T10:15:47Z
2023-03
 
Type Article
 
Identifier 0975-0991 (Online); 0971-457X (Print)
http://nopr.niscpr.res.in/handle/123456789/61561
https://doi.org/
 
Language en
 
Publisher NIScPR-CSIR,India
 
Source IJCT Vol.30(2) [March 2023]