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ASTM D6470 - homogenization efficiency of unknonw mixer
A1.1 The homogenization efficiency of each unknown mixer must be evaluated before use. To evaluate the mixer, confirm that the expected water content can be obtained by the Karl Fischer titration, following the addition of a known amount of water to a nominally dry crude and the homogenization of this ...
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ASTM D6470 for salt in crude oils (Potentiometric method)
12. Precision and Bias12.1 Precision - The precision of this test method as determined by a statistical examination of interlaboratory test results is as follows:12.1.1 Repeatability - The difference between successive results obtained by the same operator with the same apparatus under constant operating ...
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ASTM D6470 for salt in crude oils (Potentiometric method)
10. Calculation10.1 Calculate the amount of chloride present in the aqueous solution, in µmol, by means of the following equation: where:A = amount of chloride found in the aliquot of the aqueous extract (see 10.1), µmol,P = proportional part of extract used in analysis; P = 50/158 for ethanol and ...
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ASTM D6470 for salt in crude oils (Potentiometric method)
9. Procedure9.1 Extraction9.1.1 Weigh about 40 g of sample, to the nearest 0.1 g, into a 250 mL beaker and heat on a water bath or in an oven to 65 more or less 5°C. Heat 40 more or less 1 mL of xylene to the same temperature and add slowly to the sample while stirring constantly until dissolution is ...
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ASTM D6470 for salt in crude oils (Potentiometric method)
7. Sampling and Sample Preparation7.1 Sampling is defined as all the steps required to obtain an aliquot representative of the contents of any pipe, tank, or other system, and to place the sample into the laboratory sample container. The laboratory sample container and sample volume shall be of sufficient ...
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ASTM D6470 for salt in crude oils (Potentiometric method)
6. Reagents and Materials6.1 Purity of Reagents - Unless otherwise indicated, it is intended that all reagents shall conform to the specifications of the Committee on Analytical Reagents of the American Chemical Society where such specifications are available.6.2 Purity of Water - For all purposes where ...
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ASTM D6470 for salt in crude oils (Potentiometric method)
3. Summary of Test Method3.1 After homogenizing the crude oil with a mixer, a weighed aliquot is dissolved in xylene at 65°C and extracted with specified volumes of alcohol, acetone, and water in an electrically heated extraction apparatus. A portion of the aqueous extract is analyzed for total halides ...
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ASTM D6470 for salt in crude oils (Potentiometric method)
1. Scope1.1 This test method covers the determination of salt in crude oils. For the purpose of this test method, salt is expressed as % (m/m) NaCl (sodium chloride) and covers the range from 0.0005 to 0.15 % (m/m).1.2 The limit of detection is 0.0002 % (m/m) for salt (as NaCl).1.3 The test method is ...
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ASTM D189 for Conradson carbon residue of petroleum products
11. Calculation11.1 Calculate the carbon residue of the sample or of the 10 % distillation residue as follows:Carbon residue = (A x 100)/Wwhere:A = mass of carbon residue, g, andW = mass of sample, g.12. Report12.1 Report the value obtained as Conradson Carbon Residue, percent or as Conradson Carbon ...
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ASTM D189 for Conradson carbon residue of petroleum products
10. Procedure for Carbon Residue on 10 % Distillation Residue10.1 This procedure is applicable to light distillate oils, such as ASTM No. 1 and No. 2 fuel oils.10.2 Assemble the distillation apparatus described in Specification E 133 using flask D (250-mL bulb volume), flask support board with 50-mm ...
