This paper describes the investigations using aqueous extracts of leaves of medicinal plants A, B and
C; and root of plant D as environmentally friendly corrosion inhibitors of mild steel in synthetic ocean
water by weight loss method. These natural products were designed for application in Indian oil and gas
industry and other environmentally sensitive platforms; exploiting their low toxicity-as medicinal plants
and ease of biodegradation-as water soluble extracts. Aqueous extracts of plant materials A, B, C and D
were investigated for Bioaccumulation. All the extracts exhibited low bioaccumulation and good
corrosion protection. These preliminary investigations conducted to select green inhibitors revealed that
aqueous extracts of C and D exhibited better corrosion performance than A and B. Weight loss studies
results at 50ppm and 100ppm in the absence and presence of Hydrogen sulfide further support this fact.