Corrosion Inhibition Effect of Flower of Euphorbia Caducifolia for Iron in Acid Media
Journal Title: IOSR Journal of Pharmacy (IOSRPHR) - Year 2017, Vol 7, Issue 8
Abstract
ABSTRACT: Corrosion is a natural process. It is gradual destruction of metal by chemical or electrochemical reaction with their environment. It may be prevented by either alloying or by anti rust solutions. The naturally occurring plant products are eco-friendly, compatible, nonpolluting, less toxic, easily available, biodegradable and economic to be used as corrosion inhibitor. Euphorbia caducifolia has been selected to study its corrosion inhibition efficiency. It is easily available in any season. It is native to Thar Desert of India and located on rocky terrain, hills. It is used for treatment of bleeding wound, cutaneous eruption, urinary problems, kidney stones, rheumatic pain, bronchitis, jaundice, diabities, stomach pain, hernia etc. It is also called “Thor” and “Danda-thor”. It contains caudicifolin) norcycloartane type triterpene, cyclocaducinol, triterpenes euphol, tirucallol and cycloartenol. Corrosion inhibition efficiency of flower of Euphorbia caducifolia was studied for iron in HCl, HNO3 and H2SO4. Maximum inhibition efficiency was found 99.05% in 1N H2SO4 acid with 0.8% corrosion inhibitor whereas it was 93.26% in 2N H2SO4 with same concentration of inhibitor i.e. 0.8%. Inhibition efficiency was studied in different concentration of acid (1N, 1.5N, 2N and 2.5N) with different concentration of inhibitor (0.2%, 0.4%, 0.6% and 0.8%). Weight loss and thermometric methods were used. Inhibition efficiency was found to be increase with increase in concentration of inhibitor and decrease with increase in acid strength.
Authors and Affiliations
Reena Sharma, Alok Chaturvedi, R. K. Upadhyay
Keywords
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