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- ASTM D2503 Standard Test Method for Relative Molecular Mass (Molecular Weight) o ASTM D2503 Standard Test Method for Relative Molecular Mass (Molecular Weight) of Hydrocarbons by Thermoelectric Measurement of Vapor Pressure2. Summary of Test Method2.1 A weighed portion of the sample is dissolved in a known quantity of appropriate solvent. A drop of this solution and a drop of solvent ...
- ASTM D2503 Standard Test Method for Relative Molecular Mass (Molecular Weight) o ASTM D2503 Standard Test Method for Relative Molecular Mass (Molecular Weight) of Hydrocarbons by Thermoelectric Measurement of Vapor Pressure1. Scope1.1 This test method covers the determination of the average relative molecular mass (molecular weight) of hydrocarbon oils. It can be applied to petroleum ...
- ASTM D4864 Test Method for Determination of Traces of Methanol in Propylene Conc ASTM D4864 Test Method for Determination of Traces of Methanol in Propylene Concentrates by Gas Chromatography13. Calculation13.1 Calculate the methanol content of the propylene concentrate using the following equation:Methanol, mg/kg (ppm mass) = (A·F·Fx·W)/Gwhere:A = area of methanol peak,F = methanol ...
- ASTM D4864 Test Method for Determination of Traces of Methanol in Propylene Conc ASTM D4864 Test Method for Determination of Traces of Methanol in Propylene Concentrates by Gas Chromatography12. Procedure12.1 Weigh the sampling cylinder containing at least 100 g of propylene concentrate to the nearest 0.1 g.NOTE 7 - When practical, it is advisable to weigh the sampling cylinder before ...
- ASTM D4864 Test Method for Determination of Traces of Methanol in Propylene Conc ASTM D4864 Test Method for Determination of Traces of Methanol in Propylene Concentrates by Gas Chromatography9. Sampling9.1 The propylene concentrate sample shall be in the liquified state and be representative of the material in the storage tank or process line. Also, for purposes of this method as ...
- ASTM D4864 Test Method for Determination of Traces of Methanol in Propylene Conc ASTM D4864 Test Method for Determination of Traces of Methanol in Propylene Concentrates by Gas Chromatography7. Apparatus7.1 Gas Chromatograph - Any GC equipped with either flame ionization or thermal conductivity detectors with an overall sensitivity sufficient to detect at least 4 mg/kg of methanol.7.2 ...
- ASTM D4864 Test Method for Determination of Traces of Methanol in Propylene Conc ASTM D4864 Test Method for Determination of Traces of Methanol in Propylene Concentrates by Gas Chromatography4. Summary of Test Method4.1 A known mass of water is pressured into a sample cylinder containing a known amount of liquified propylene concentrate. The contents in the cylinder are shaken and ...
- ASTM D4864 Test Method for Determination of Traces of Methanol in Propylene Conc ASTM D4864 Test Method for Determination of Traces of Methanol in Propylene Concentrates by Gas Chromatography1. Scope1.1 This test method covers the determination of methanol in propylene concentrates in the range of approximately 4 mg/kg to 40 mg/kg (parts-per-million by mass).1.2 The values stated ...
- ASTM D6376 Standard Test Method for Determination of Trace Metals in Petroleum C ASTM D6376 Standard Test Method for Determination of Trace Metals in Petroleum Coke by Wavelength Dispersive X-ray Fluorescence Spectroscopy12. Procedure12.1 Place the analytical sample pellet into the sample holder and place both into the X-ray spectrometer. Avoid touching or otherwise contaminating ...
- ASTM D6376 Standard Test Method for Determination of Trace Metals in Petroleum C ASTM D6376 Standard Test Method for Determination of Trace Metals in Petroleum Coke by Wavelength Dispersive X-ray Fluorescence Spectroscopy9. Sampling and Preparation of Test Specimens9.1 Basic Assumptions - All petroleum coke samples examined using this test method shall be analytical samples representative ...