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Is My Drywall Chinese? - HB Litigation Conferences

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Key Reactions*<br />

• H2S + H2O + M = Metal sulfides<br />

• COS + H2O = H2S + CO2<br />

• CS2 + H2O = H2S + CO2 (very slow)<br />

• SSr + H2O = H2S + SrO<br />

• FeS/FeS2 + acid = H2S<br />

• Ag + H2S = Ag2S (tarnish)<br />

• Cu + S = CuS<br />

• Cu + S = Cu2S<br />

• S + H2O = H2S<br />

• S + O2 = SO4 ‐2<br />

*Not balanced equations<br />

Gas Phase<br />

(Adsorption<br />

on surface) )<br />

Liquid Phase<br />

(condensed<br />

humidity)<br />

Net Reaction<br />

Corrosion Chemistry<br />

Combination of electrochemical and chemical actions<br />

6/23/2009<br />

10

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