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ASTM D1840 Test Method for Naphthalene Hydrocarbons in Aviation Turbine Fuels
ASTM D1840 Test Method for Naphthalene Hydrocarbons in Aviation Turbine FuelsASTM D1840 Standard Test Method for Naphthalene Hydrocarbons in Aviation Turbine Fuels by Ultraviolet Spectrophotometry1. Scope1.1 This test method covers the determination, by ultraviolet spectrophotometry, of the total concentration ...
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ASTM D1839 Standard Test Method for Amyl Nitrate in Diesel Fuels
ASTM D1839 Standard Test Method for Amyl Nitrate in Diesel Fuels12. Precision and Bias12.1 Precision - The precision of this test method as obtained by statistical analysis of interlaboratory test results is as follows:12.1.1 Repeatability - The difference between successive test results, obtained by ...
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ASTM D1839 Standard Test Method for Amyl Nitrate in Diesel Fuels
ASTM D1839 Standard Test Method for Amyl Nitrate in Diesel Fuels10. Procedure10.1 Weigh into a separatory funnel a sample of diesel fuel to the nearest 0.1 mg, not exceeding 2 mL (Note 4), and not containing more than 1.0 mg of amyl nitrate. Add 2 mL of the m-xylenol solution and shake thoroughly. Add ...
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ASTM D1839 Standard Test Method for Amyl Nitrate in Diesel Fuels
ASTM D1839 Standard Test Method for Amyl Nitrate in Diesel Fuels9. Preparation of Calibration Curve9.1 Prepare a series of standard samples containing a known amount of amyl nitrate in diesel fuel, covering the range of 0.2 to 2.0 mg of amyl nitrate per gram (Note 3). Weigh 0.5-g portions of these standards, ...
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ASTM D1839 Standard Test Method for Amyl Nitrate in Diesel Fuels
ASTM D1839 Standard Test Method for Amyl Nitrate in Diesel Fuels6. Apparatus6.1 Absorption Cells, matched, having a 1.000 more or less 0.002-cm light path.6.2 Distillate Collector, borosilicate glass with standard taper joints and sealed-in funnel (Fig. 1).6.3 Electric Heating Mantle, to fit a 300-mL ...
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ASTM D1839 Standard Test Method for Amyl Nitrate in Diesel Fuels
ASTM D1839 Standard Test Method for Amyl Nitrate in Diesel Fuels3. Summary of Test Method3.1 This test method is based on the simultaneous hydrolysis of the ester in 62.5 % sulfuric acid and nitration of m-xylenol by the nitric acid liberated. The nitroxylenol is distilled from the reaction mixture and ...
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ASTM D1839 Standard Test Method for Amyl Nitrate in Diesel Fuels
ASTM D1839 Standard Test Method for Amyl Nitrate in Diesel Fuels1. Scope1.1 This test method covers the determination of 0.1 to 0.5 volume percent amyl nitrate in diesel fuels.1.2 The preferred units are acceptable metric units.1.3 This standard does not purport to address all of the safety concerns, ...
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ASTM D1662 Standard Test Method for Active Sulfur in Cutting Oils
ASTM D1662 Standard Test Method for Active Sulfur in Cutting Oils10. Precision and Bias10.1 Precision - It is not practical to specify the precision of the procedure in this test method for measuring active sulfur because a round robin has not been completed.10.1.1 Work is underway to improve and determine ...
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ASTM D1662 Standard Test Method for Active Sulfur in Cutting Oils
ASTM D1662 Standard Test Method for Active Sulfur in Cutting Oils8. Procedure8.1 Determine the sulfur concentration of the sample to be tested in accordance with Test Method D129.8.2 Place 50 more or less 2 g of sample in a 200-mL tall-form beaker, lower the stirrer to within 5 mm of the bottom of the ...
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ASTM D1662 Standard Test Method for Active Sulfur in Cutting Oils
ASTM D1662 Standard Test Method for Active Sulfur in Cutting Oils6. Apparatus6.1 The apparatus shall be the same as that described in Test Method D129 in addition to the following:6.2 Stirrer, constructed of glass in the form of an inverted T. A flat blade, approximate length 25 mm, height 6 mm, thickness ...
