(2)
Maintain solution at 65 to 95F (18 to 35C) in an agitated tank.
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D. Method No. 402D: Rust Stripper Mixing Instructions
WARNING: RUST STRIPPER SOLUTIONS ARE HAZARDOUS. AVOID INHALING FUMES, DUST, OR MIST. USE OF A RESPIRATOR IS STRONGLY RECOMMENDED. AVOID CONTACT WITH SKIN. AFTER PREPARATION, WASH HANDS AND FACE THOROUGHLY.
CAUTION: EXERCISE EXTREME CAUTION WHEN PREPARING RUST STRIPPER SOLUTION. MIXING MAY PRODUCE TEMPERATURES EXCEEDING THE BOILING POINT OF THE SOLUTION. ADD OAKITE RUST STRIPPER WHILE AGITATING SOLUTION AS A MEANS TO PREVENT LOCALIZED OVERHEATING.
Prepare rust stripper solution as follows:
WARNING: USE CORRECT PERSONAL PROTECTION. THIS CHEMICAL SOLUTION CAN CAUSE SKIN, EYE AND LUNG DAMAGE. THE DANGER AND PRECAUTIONS FOR EACH CHEMICAL IS DIFFERENT.
(1)
Dissolve three to five pounds of rust stripper (Oakite Rustripper) (SECTION VII) in each gallon of distilled or de-ionized water used.
(2)
Maintain solution at 160 to 200F (71 to 93C) in an air agitated tank.
E. Method No. 402E: Aluminum Touch-up Mixing Instructions
Prepare aluminum touch-up acid-based solution as follows:
WARNING: USE EXTREME CAUTION TO PREVENT CONTACT WITH SKIN. IF POWDER OR MIXED SOLUTION COMES IN CONTACT WITH SKIN, FLUSH OFF IMMEDIATELY WITH WATER. DO NOT INHALE DUST FROM POWDERS OR VAPORS FROM THE SOLUTION.
CAUTION: MATERIALS SATURATED WITH SOLUTION CONSTITUTE A FIRE HAZARD IF ALLOWED TO DRY. RINSE MATEIALS THOROUGHLY IN TAP WATER IMMEDIATELY AFTER USE.
(1)
Mix four ounces of powder (Iridite No. 14-2) (MIL-C-81706) (SECTION VII) in each gallon of distilled or de-ionized water used.
NOTE: Make major adjustments of pH with chromic acid, because excessive use of nitric acid will precipitate the treatment chemicals in the form of sludge.
(2)
Maintain pH of 0.9 to 1.1 by adding chromic acid (Federal Specification O-C-303B) (SECTION VII) and nitric acid (Federal Specification A-A-59105) (SECTION VII) as required.
(3)
Maintain solution at room temperature.
WARNING: USE CORRECT PERSONAL PROTECTION. THIS CHEMICAL SOLUTION CAN CAUSE SKIN, EYE AND LUNG DAMAGE. THE DANGER AND PRECAUTIONS FOR EACH CHEMICAL IS DIFFERENT.
(4)
Allow solution to stand at least two hours before use.
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F. Method No. 402F: Chromic-acid Pickle Mixing Instructions
WARNING: USE CORRECT PERSONAL PROTECTION. CHROMIC-ACID PICKLE SOLUTIONS ARE HAZARDOUS. AVOID INHALING FUMES OR MIST. AVOID CONTACT WITH SKIN. AFTER PREPARATION AND USE, WASH HANDS AND FACE THOROUGHLY.
Prepare chromic-acid pickle solution as follows:
(1)
Dissolve 16 ounces (473,17 mL) of chromic acid flake (SECTION VII) in each gallon (3,78 L) of distilled or de-ionized water used.
(2)
Maintain solution at 70 to 80F (21 to 27C).
G. Method No. 402G: Magnesium Touch-up (Dow 1) Mixing Instructions
CAUTION: DO NOT ALLOW TOUCH-UP SOLUTION (DOW 1) TO CONTACT ANODIC TREATED SURFACES. A RAPID DETERIORATION OF THE COATING WILL OCCUR.
Prepare magnesium touch-up solution (Dow 1) as follows:
(1)
Mix 1.5 pounds (680,38 g) of sodium dichromate/bichromate (SECTION VII) and 1.5 pints (709,76mL) of nitric acid (Federal Specification A-A-59105) (SECTION VII) with enough water to make one gallon (3,78 L) of solution.
(2)
Allow solution to stand for one to two minutes before use.
H. Method No. 402H: Magnesium Touch-up (Dow 19) Mixing Instructions
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