SciELO - Scientific Electronic Library Online

vol.26 número2Pyrazole Derivatives as Corrosion Inhibitors for Steel in Hydrochloric AcidEffects of Magnesium Sulfate Attack on Ordinary Portland Cement (OPC) Mortars índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados




Links relacionados

  • Não possue artigos similaresSimilares em SciELO


Portugaliae Electrochimica Acta

versão impressa ISSN 0872-1904

Port. Electrochim. Acta v.26 n.2 Coimbra  2008


Corrosion Inhibition Efficiency of 3-Hydroxy-2-Methylquinazoline-4-one on Mild Steel in 1 M H2 SO4 and 1 M HCl Acid at Different Temperatures


W.A. Siddiqi, V. M. Chaubey *


Environmental Science Laboratory, Department of Applied Sciences & Humanities, Faculty of Engineering & Technology,  Jamia Millia Islamia, New Delhi –110025. INDIA


Received 22 May 2007; accepted 29 August 2007



The influence of  3-hydroxy-2-methylquinazoline -4-one on the corrosion inhibition of mild steel in 1 M HCl and 1 M  H2SO4 has been studied using weight loss, and galvanostatic polarization studies. Result obtained reveals that this organic compound is a very good inhibitor and its inhibition efficiency increases with increasing its concentration to attain 92% at 1000 ppm at 25 ºC. The potentiodynamic polarization study indicates that this compound acts as a mixed type corrosion inhibitor. The rate of corrosion of mild steel rapidly increases with temperature over the temperature range of 25 ºC to 55 ºC, both in absence and presence of the inhibitor. Thermodynamic parameter for adsorption process has been calculated using the Langmuir’s adsorption isotherm.

Keywords: corrosion, inhibition, 3-hydroxy-2-methylquinazoline -4-one, hydrochloric acid, sulfuric acid.


Texto disponível em PDF

Full text only in PDF format



1. A.S. Babaqi, M.S. El-Basiounyi, R.M. Abdulla, Bull. Soc. Chem. Fr. 3 (1989) 297.        [ Links ]

2. B.I. Ita, O.E. Offiong, Mater. Chem. Phys. 70 (2001) 330.

3. TW. Machu, Proc. 3rd Eur. Symp. on Corrosion Inhibitors, Ferrara, (1970), Univ of Ferrara, 107.

4. S.D. Shetty, Prakash Shetty, H.V.S. Nayak, Indian J. Chem. Technol. 12 (2005) 462.

5. G. Trabenelli and F. Zucchi, Rev. Coat. Corros. (1973) 97.

6. A.S.Fouda, A.A. El-Bindary, A.A. Ai-Sarawy, E.E. El-Katori, Bull. Electrochem. 21 (2005) 481.

7. G. Gardner, in C. Nathan (Ed.), Corrosion Inhibitors, NACE, Houston, (1973) 156.

8. W. Bullough, in L.L. Shreir (Ed.), Corrosion, Vol. 2, Butterworths, London, 2nd Edn., (1976) 12.

9. M.W. Ranney, Corrosion Inhibitors Manufacture and Technology, Noyes Data Corporation, New Jersey (1976).

10. J.S. Robinson, Corrosion Inhibitors, Recent Development, Noyes Data Corporation, New Jersy (1979).

11. I.L. Rozenfeld, Corrosion Inhibitors, McGraw-Hill, New York (1981).

12. S. Kertit, B. Hammouti, M. Taleb and M. Brigiili, Bull. Electrochem. 13 (1997) 241.

13. B. Mernari, H. Elattari, M. Traisnel, F. Bentiss and M. Lagrenee, Corrosion Science 40 (1998) 391.

14. H.-B. Fan, C.-Y. Fu, H.-L. Wang, X.-P. Guo and J.-S. Zheng, Brit. Corros. J. 37-2  (2002) 122.

15. A.S.T.M, Standard Practice for Laboratory Immersion Corrosion Testing of Metals, Annual Book of Standards, G 31-72, 3.02 (1990).

16. Y.K. Agrawal, J.D. Talati, M.D. Shah, M.N. Desai and N.K. Shah, Corrosion Science 46 (2004) 633.


* Corresponding author. E-mail address:

Creative Commons License Todo o conteúdo deste periódico, exceto onde está identificado, está licenciado sob uma Licença Creative Commons