Sodium Citrate as an Environmentally Friendly Corrosion Inhibitor of Steel in a Neutral Environment

Table 5

Corrosion rate (, g/cm²∙h) and degree of protection (, %) of 09G2S steel in 0.1% NaCl solution.

Environment
	Exposure time
	24 hours		96 hours
0.1% NaCl solution		—		—
0.1% NaCl solution+2.0 g/l Na3C6H5O7		58.7		48.9
0.1% NaCl solution+2.5 g/l Na3C6H5O7		65.7		49.2