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ASTM D612 Standard Test Method for Carbonizable Substances in Paraffin Wax
ASTM D612 Standard Test Method for Carbonizable Substances in Paraffin Wax5. Apparatus5.1 Test Tube, as shown in Fig. 1, of heat-resistant glass fitted with a well-ground glass stopper, the stopper and the tube bearing identical and indestructible numbers. The tube shall be 140 +/- 2 mm in length and ...
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ASTM D612 Standard Test Method for Carbonizable Substances in Paraffin Wax
ASTM D612 Standard Test Method for Carbonizable Substances in Paraffin Wax3. Summary of Test Method3.1 Five millilitres of melted wax are treated with 5 mL of concentrated, nitrogen-free sulfuric acid at 158°F (70°C). The color of the acid layer is compared with that of a colorimetric reference standard. ...
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ASTM D612 Standard Test Method for Carbonizable Substances in Paraffin Wax
ASTM D612 Standard Test Method for Carbonizable Substances in Paraffin Wax1. Scope1.1 This test method covers determination of carbonizable substances in paraffin wax. The test method is applicable to paraffin wax for pharmaceutical use, as defined by the U.S. National Formulary, with a melting point ...
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ASTM D4424 Standard Test Method for Butylene Analysis by Gas Chromatography
ASTM D4424 Standard Test Method for Butylene Analysis by Gas Chromatography10. Report10.1 Report individual hydrocarbon compounds of the test sample using units of mass percent, rounded to the nearest 0.05 mass percent.11. Precision and Bias11.1 It is not feasible to provide a complete precision statement ...
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ASTM D4424 Standard Test Method for Butylene Analysis by Gas Chromatography
ASTM D4424 Standard Test Method for Butylene Analysis by Gas Chromatography8. Procedure8.1 If a vapor sample is to be injected using a gas sample valve, a representative portion of the liquid butylenes must be taken and vaporized into a suitable container. As a suggestion, a small, 5 or 10 mL aliquot ...
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ASTM D4424 Standard Test Method for Butylene Analysis by Gas Chromatography
ASTM D4424 Standard Test Method for Butylene Analysis by Gas Chromatography5. Apparatus5.1 Chromatograph - Any chromatographic instrument having either a thermal conductivity or flame ionization detector with an overall sensitivity sufficient to detect at least 0.05 % of each of the components listed ...
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ASTM D4424 Standard Test Method for Butylene Analysis by Gas Chromatography
ASTM D4424 Standard Test Method for Butylene Analysis by Gas Chromatography3. Summary of Test Method3.1 The sample is separated in a gas chromatograph system using a packed chromatographic column with either helium or hydrogen as the carrier gas. The separated components of the sample are detected by ...
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ASTM D4424 Standard Test Method for Butylene Analysis by Gas Chromatography
ASTM D4424 Standard Test Method for Butylene Analysis by Gas Chromatography1. Scope1.1 This test method covers the gas chromatographic analysis of commercial butylenes, butylene concentrates, and butane-butylene mixtures.1.2 This test method does not cover high-purity butene-1 or high-purity isobutene ...
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ASTM D1465 Standard Test Method for Blocking and Picking Points of Petroleum Wax
ASTM D1465 Standard Test Method for Blocking and Picking Points of Petroleum Wax12. Calculation and Report12.1 Plot the temperature gradient curve for the instrument from the temperature recorder readings. Aside from a slight rise in temperature when the specimens are first placed on the plate, the temperature ...
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ASTM D1465 Standard Test Method for Blocking and Picking Points of Petroleum Wax
ASTM D1465 Standard Test Method for Blocking and Picking Points of Petroleum Wax11. Procedure11.1 The blocking plate may be left on continuously. If starting with a cold plate, allow at least 3 h for the plate to heat up and reach an equilibrium condition with the pads and weights in place. Check the ...
