inorganic salts, and water.T he maximum operating temperature is 3258 F
(1638 C), somewhat higher than that of the amine-cured epoxies.
4.10.3F urans
Furanp olymers ared erivatives of furfuryl alcohola nd furfural.
4
Using
an acid catalyst, polymerization occurs by the condensation route that
generates heat and water by-product.
All furan linings must be post-cured to drive out the reaction “condensate”
to achieve optimum properties.
TABLE 4.4 Continued
Maximum Te mperature
Chemical
8 F
8 C
Hydrofluoric acid, 60%
XX
Hydrofluoric acid, 100%
XX
Lactic acid, 25%
160
71
Methyl ethyl ketone
160
71
Methyl isobutyl ketone
XX
Muriatic acid
160
71
Nitric acid, 5%
300
149
Nitric acid, 20%
XX
Nitric acid, 70%
XX
Nitric acid, anhydrous
XX
Nitrous acid, conc.
XX
Phosphoric acid, 50–80%
XX
Picric acid
212
100
Sodium hydroxide, 10%
300
149
Sodium hydroxide, 50%
XX
Sodium hydroxide, conc.
XX
Sodium hypochlorite, 15%
XX
Sodium hypochlorite, conc.
XX
Sulfuric acid, 10%
250
121
Sulfuric acid, 50%
250
121
Sulfuric acid, 70%
200
93
Sulfuric acid, 90%
70
21
Sulfuric acid, 98%
XX
Sulfuric acid, 100%
XX
Sulfurous acid
80
27
Thionyl chloride
200
93
Zinc chloride
300
149
The chemicals listed are in the pures tate or in as aturated solution
unless otherwise indicated. Compatibility is shown to the maximum
allowable temperaturefor which data is available. Incompatibility is
shown by an X. Ablank space indicates that data is unavailable.
Source:F rom P. A. Schweitzer.2 004. CorrosionR esistanceT ables,
Vo ls. 1–4, 5th ed., New York: Marcel Dekker.
Corrosion of Linings and Coatings
88
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