COMPLIANCE INFO_COMPLIANCE INFO 1983-2007

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MII,C-11796B 68 grams of sodium dichromate, ACS. natant liquid. Remove a small amount of the 15 ml. of sulfuric acid, ACS. sedimented material with a pipette, or with The discs shall then be rinsed with dis- a long medicine dropper. Place a few drops tilled water and dried for 1/2 hour in an oven of the material on a new clean microscope maintained at 221° to 230° F. glass slide, and allow the solvent to evapo- rate at room temperature. After evaporation 4.6.4.2 Procedure. A brass catalyst disc rub a similar slide against the side of the shall be placed at the bottom of each glass slide containing the dried Lresidue, and ex- dish and covered with 4.0±0.01 grams of the amine both slides for scratches. Any scratch- compound. The remainder of the determina- ing of the glass slides shall be attributable tion shall be carried out in accordance with to the presence of abrasives in the compound. Method 3453 of Federal Standard No. 791. 4:6.7 Slick (Class 1A only). Coat the blades of a laboratory stirrer with the com- pound by immersing ,the shaft for 1 minute (Class 3 only). A mixture composed of 5 to a depth of 1 inch in the compound held at parts by weight of the compound, and 95 a temperature of 190° F. Allow to dxain parts of lubricating oil conforming to grade and cool to 75±5° F. Place a beaker con- 1100 of Specification MIL-L-6082, shall be twining 200 ml. of 4-percent sodium chloride placed in a 35-by-200 mm. test tube. The solution at 100° F., so that the blades of the tube and its contents shall be heated for one stirrer are submerged 1 inch beneath the hour in an oil bath maintained at 170° ±2° surface of the solution. Allow the shaft to F. The tube shall then be removed, stoppered rotate for 3 minutes at approximately 1,500 with a cork while still hot, and agitated rpm. Set the beaker on black paper in front vigorously for 1/2 minute. The tube shall be of a window. View the surface of the salt returned to the oil bath and reheated for 1 solution at an angle of approximately 450, hour. The mixture shall be examined forr to determine whether or not an oily film miscibility while still hot, and again after (slick) has been formed. cooling to 75°±5°F. After being exposed oto room temperature for 20 hours, the mixture 4.6.8.1 Humidity Cabinet. This test shall shall again be examined for separation of be conducted in accordance with Method 5310 the compound and the oil. of Federal Standard No. 791 with the follow- ing changes: 4.6.6 Abrasives. Dissolve 5 grams of the 4.6.8 Corrosion protection. compound in a small portion of methyl chloroform, and pour the dissolved sample 4.6.8.1.1 Coating test panels. Three test into a cone-shaped centrifuge tube. Add panels shall be immersed in the molten com- Methyl chloroform to make a total volume of pound, maintained at an experimentally de- 100 milliliters. The apparatus and procedure termined temperature below the maximum described in paragraphs 3 and 5 of method temperature of application permissible for 3101 of Federal Standard No. 791 shall be the class of compound under test (see used in making the sedimentation of,the ma- 3.10.1), until the temperature of the panels terial for the abrasive determination. How- reaches that of the compound. The panels ever, only one test §hall be made on each shall then be mechanically withdrawn at the sample of the compound, instead of the dup- rate of 4 inches per minute so that a film of licate test stipulated by the specified method. compound, 1.5±0.2 mils in thickness, shall The total volume of the centrifuged sediment adhere to the panels. shall not exceed 0.05 milliliters. 4.6.8.1.2 Filen thickness. The thickness of Decant all but a few milliliters of the super- the applied film shall be determined usin(r 6 i