Brian Dalder Forum Moderator 177 Posts
Re: Corrosion Resistance of Carbon Steel to Ethylene Dichloride13 February 2009 at 1:29pm
The corrosion resistance of carbon steel to ethylene dichloride is considered "poor" (unsuitable under all conditions).* I would not recommend carbon steel as a material of construction for ethylene dichloride. With regard to pH, the greater the alkalinity, the slower the attack on carbon steel so keeping solutions basic should make them less corrosive. In neutral solutions, other factors such as aeration become more important so that corrosion behavior becomes difficult to predict.
* Davis, J.R. ed. Corrosion of Steels in Chemical Environments. ASM Specialty Handbook - Carbon and Alloy Steels, ASM International: Materials Park, OH, 1996, p. 440.
At what pH would you keep a mixture of ethylene dichloride (~94%) and water to minimize carbon steel corrosion due to chlorides? Do you know any Web sites that have guidelines regarding corrosion of carbon steel vs. pH?
Have an insight or suggestion?
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