We use cookies to make our website easier to use and to better understand your needs. What Manufacturers Should Know as We Approach the New Year. ?�� x�S�*�*T0г464R0 A��B��R�D��R!9WA? endobj Maximum vapor pressure limits for gasoline are legally mandated in some areas as a measure of air pollution control. x�+� � | endobj <>stream endstream The rate of vaporization is often referred to as volatility, and one test to measure this is the Reid vapor pressure test. REID Vapor Pressure: RVP & PA ASTM D323-A, ASTM D323-C, ASTM D323-D, ASTM D4953, ISO 3007-A, ISO 3007-C, ISO 3007-D, IP 69-A, IP 69-C, IP 69- D, JIS K 2258 Product group(s): User group(s): Scope: Volatility Fuel, Gasoline, Jet Fuel, Solvent These methods cover procedures for the determination of vapor pressure of gasoline, volatile crude oil, and other volatile petroleum products. 51 0 obj Status
<>stream I use the following procedure: I have a crude composition with no water at 0 °C and 1.013 bara. x�+� � | 25 0 obj <>stream The iterative procedure calculates the vapor pressure of a liquid fraction for the conditions specified by the RVP test, namely, original sample at 35oF, pressure test started at 60oF, equilibrium vapor/liquid volume of 4 (i.e., V/L = n = 4), and final equilibrium pressure measured at 100oF. endobj endobj 5.1 Vapor pressure is an important physical property of volatile liquids. 10 0 obj 1.5 Procedure D for aviation gasoline with a vapor pressure of approximately 50 kPa (7 psi). endobj 21 0 obj <>stream endstream For determination of the vapor <>stream Learn More. The Reid vapor pressure differs from the true vapor pressure of the sample due to some small sample vaporization and the presence of water vapor and air in the confined space. endobj Enabling you to identify and mitigate the intrinsic risk in your operations, supply chains and business processes. (pounds-force per square inch). Reid vapor pressure (RVP) is a common measure of the volatility of gasolineand other petroleum products. endobj x�}��N�0E�����ٴqJi)��@ @��]6i줮;��(|=NSV4]if�ܙ#�!E��E�ާ(-���$GB��H^c��Ь+����5��6�� ;�
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Specific warning statements are given in Sections 7 and 18, and 12.5.3, 15.5, 21.2, A1.1.2, A1.1.6, and A2.3. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard. "�@�%_!�+� e IP 481 is a test method for determination of the air-saturated vapor pressure of crude oil. endobj x�S�*�*T0г464R0 A��B��R�D��R!9WA? incorporated in the new algorithm. � x�S�*�*T0г464R0 A��B��R�D��R!9WA? 5.2 Vapor pressure is critically important for both automotive and aviation gasolines, affecting starting, warm-up, and tendency to vapor lock with high operating temperatures or high altitudes. Summary of Test Method 4.1 The liquid chamber of the vapor pressure apparatus is filled with the chilled sample and connected to the vapor chamber that has been heated to 37.8 °C (100 °F) in a bath.The assembled apparatus is immersed in a bath at 37.8 °C (100 °F) until a constant pressure is observed. � endobj Related Products 18 0 obj endobj <> Because the external atmospheric pressure is counteracted by the atmospheric pressure initially present in the vapor chamber, the Reid vapor pressure is an absolute pressure at 37.8 °C (100 °F) in kilopascals (pounds-force per square inch).
"�L�%_!�+� � 4.2). Section 2297 Test Method for the Determination of the Reid Vapor Pressure Equivalent Using an Automated Vapor Pressure Test Instrument (a) Scope (1.0) This test method covers the determination of the total pressure, exerted in vacuum, by air—containing, volatile, petroleum products. Reid Vapor Pressure, ASTM D323, is an ASTM test method which measures the vapor pressure of crude oil and petroleum refined products. G Mark Requirements for Electronics Imported to the Gulf Member States, Formulated Oils, Greases & Additives Testing. endobj endobj Learn more about the cookies we use and how to change your settings. x�+� � | 47 0 obj "�B�%_!�+� � <>stream The common method for measuring vapor pressure is the Reid vapor pressure (RVP) test. <>/ColorSpace<>/Properties<>/XObject<>/Font<>/ProcSet [/PDF /Text /ImageB /ImageC /ImageI]>>/Contents[9 0 R 39 0 R 10 0 R]/Parent 40 0 R/Type/Page/Annots[41 0 R 42 0 R 43 0 R 44 0 R 45 0 R 46 0 R 47 0 R 48 0 R 49 0 R 50 0 R 51 0 R 52 0 R 53 0 R 54 0 R 55 0 R]>> 5.4 Vapor pressure is also used as an indirect measure of the evaporation rate of volatile petroleum solvents. endobj It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. NOTE 2—For determination of the vapor pressure of liquified petroleum gases refer to Test Method D 1267. endobj Specific warning statements are given in Sections, Standard Test Method for Vapor Pressure of Petroleum Products (Reid Method), No other standards are normatively referenced, No other standards are informatively referenced, crude oils, gasoline, Reid vapor pressure, spark-ignition engine fuel, vapor pressure, volatility. endobj � Link to Active (This link will always route to the current Active version of the standard.
This test measures the pressure of a vapor and liquid mixture in a closed container at 100°F (37.8°C). 41 0 obj <> 1.9 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. endstream x�+� � | The Reid vapor pressure differs from the true vapor pressure of the sample due to some small sample vaporization and the presence of water vapor and air in the confined space. endobj � endobj endobj endstream endstream x�S�*�*T0г464R0 A��B��R�D��R!9WA? Next the system is flashed at constant volume at 100 F. The resulting gauge pressure is the Reid vapor pressure. Products and Services / Standards & Publications / Standards Products, Active Standard ASTM D323 | Developed by Subcommittee: D02.08, Permissions to reprint documents can be acquired throughCopyright Clearance Center