POSTCOATING CHEMICAL RESISTANCE GUIDE
Postcoatings will withstand exposure to many corrosive atmospheres with the exception of strong alkalies, strong oxidizers, wet bromine, and chlorine and fluorine in concentrations greater than 100 ppm (parts per million). Because the resistance is dependent upon the application, environment, coil construction, and other factors, please contact us for specific recommendations. The postcoatings are resistant to the following chemicals:
|
Acetates – all |
Citric acid |
Nitric acid (dilute) |
|
Acetic acid |
Coke oven gas |
Nitrides – all |
|
Acetone |
Esters – all |
Nitrobenaene |
|
Acetylene |
Ethers – all |
Nitrogen fertilizers |
|
Acrylonitrile Alcohols – all |
Ethylene oxide Fatty acids |
Oils, mineral and vegetable – all |
|
Aldehydes – all |
Fluosilicic acid |
Oxalic acid |
|
Alum |
Formaldehyde |
Oxygen |
|
Amines – all |
Formic acid |
Phenol |
|
Ammonia |
Freon |
Phosphoric acid |
|
Ammonium hydroxide |
Fuels – all |
Propane |
|
Ammonium nitrate |
Gases – inert |
Salicylic acid |
|
Aniline |
Gases – manufactured |
Silicic acid |
|
Benzoic acid |
Gases – natural |
Steam vapor |
|
Benzol |
Glycerine |
Stearic acid |
|
Boric acid |
Glycols – all |
Sulfate liquors |
|
Brine |
Hydrocarbons – all |
Sulfonic acid |
|
Butane |
Hydrochloric acid |
Sulfur dioxide |
|
Carbolic acid |
Hydrogen |
Sulfuric acid |
|
Carbonates – all |
Hydrogen sulfide |
Sulfurous acid |
|
Carbon dioxide |
Iodides – all |
Surfactants |
|
Carbonic acid |
Ketones – all |
Tannic acids |
|
Carbon monoxide |
Lacquers |
Tetrasthyl lead |
|
Carbon tetrachloride |
Lactic acid |
Toluene |
|
Chlorides – all |
Maleic acid |
Trisodium phosphate |
|
Chlorinated solvents – all |
Malic acid |
Urea |
|
Chlorine – less than 100 ppm |
Methanol |
Saltwater |
|
Chloroform |
Methylene chloride |
Water |
|
Chromic acid |
Naphthalene |
Xylene |
|
|
|
|
Most
Postcoatings
are NOT resistant to the following chemicals:
|
Aluminum
fluoride |
Cadmium
cyanide |
Hydrogen
peroxide |
|
Ammonium
fluoride |
Calcium
hypochlorite |
Hypochlorites |
|
Aqua
regia |
Caustic
soda |
Nitric
acid (conc.) |
|
Bleaching
compounds |
Chlorine
– over 100 ppm |
Nitrogren
oxides |
|
Brass
plating solutions |
Cyanide
plating solutions |
Potassium
hydroxide |
|
Bromine
– over 100 ppm |
Fluorine
– over 100 ppm |
Sodium
fluoride (conc.) |
|
Bronze
plating solutions |
Hydrofluoric
acid (conc.) |
Sodium
hydroxide (conc.) |
NOTE: This information is based on research conducted by the postcoating manufacturers and is believed to be accurate.
However, no guarantee of accuracy can be made and no liability will
be assumed by Criterion.
