Complete Arch Manual

SEFA Results

CHEMICAL RESISTANCE TESTING ( RATING SCALE )

LEVEL 0 = NO DETECTABLE CHANGE LEVEL 1 = SLIGHT CHANGE IN COLOR OR GLOSS LEVEL 2 = SLIGHT SURFACE ETCHING OR SEVERE STAINING LEVEL 3 = PITTING, CRATERING, SWELLING, EROSION OF COATING, OBVIOUS & SIGNIFICANT SRETIORATION

CHEMICAL

RATING

COMMENTS

Amyl Acetate Ethyl Acetate

0 0 0 0 0 0 0 0 2 0 0 0 0 0 1 0 0 0 0 0 0 0 0 2 0 2 0 0 0 0 0 0 2 0 0 0 2 2 2 0 0 0 2 2 1 0 0 0 0

Acetic Acid 98%

Acetone

Acid Dichromate 5%

Butyl Alcohol Ethyl Alcohol Methyl Alcohol

Ammonium Hydroxide 28%

Severe staining (dark became black)

Benzene

Carbon Tetrachloride

Chloroform

Chromic Acid 60%

Cresol

Dichloro Acetic Acid Dimethylformanide

Slight change in gloss

Dioxane

Ethyl Ether

Formaldehyde 37% Formic Acid 90%

Furfural Gasoline

Hydrochloric Acid 37% Hydrofluoric Acit 48% Hydrogen Peroxide 3% Tincture of Iodine Methyl Ethyl Ketone Methylene Chloride Mono Chlorobenzene

Severe staining (surface became white)

Severe staining (surface became yellow)

VM&P

Nitric Acid 20% Nitric Acid 30% Nitric Acid 70%

Severe staining (surface became brown)

Phenol 90%

Phosphoric Acid 85% Silver Nitrate (Saturated) Sodium Hydroxide 10% Sodium Hydroxide 20% Sodium Hydroxide 40% Sodium Hydroxide Flake Sodium Sulfide (Saturated)

Severe staining (dark grain became black) Severe staining (dark grain became black) Severe staining (dark grain became black)

Sulfuric Acid 25% Sulfuric Acid 85% Sulfuric Acid 96%

Severe staining (dark grain became brown) Severe staining (dark grain became black) Slight change in color (yellow stain)

Sulfuric Acid 85% & Nitric Acid 70% (Equal Parts)

Toluene

Trichloroethylene

Xylene

Zinc Chloride Saturated TOTAL OF ALL RATINGS

20

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