As of that date the sale of gasoline with an RVP of 7.8 psi was no longer required in Armstrong, Beaver, Butler, Fayette, Washington and Westmoreland Counties. subject to the federal 7.8 psi RVP standard; required to sell federal reformulated gasoline (RFG); required to sell California RFG (i.e., the entire state of California); and. The pour point for diesel fuel rests at 10 degrees Fahrenheit or -12 degrees Celsius. P. Jansen). Vapor Pressure Formula: How To Calculate Vapor Pressure | BVV The water will condense if we raise the pressure and keep the temperature. Its odour threshold is 5 p.p.m. : Acute tubular necrosis after exposure to diesel oil. A designated volatility nonattainment area is an area that is designated as being nonattainment for the ozone National Ambient Air Quality Standard (NAAQS) pursuant to a rulemaking under CAA section 107(d)(4)(A)(ii), and a designated volatility attainment area is an area not designated as being in nonattainment with the NAAQS for ozone. Explain Distinction between Free Radical Reaction and Polar Reaction. Original version - June 2019. There are two factors that influence the vapor pressure: The higher the temperature is, the more molecules have enough energy to escape from the liquid or solid, which leads to higher vapor pressure values. Please click here to see any active alerts. Number 1 fuel oil is essentially kerosine. Before heading into the next section, be sure to master the conversions between the various pressure measurement units: our pressure conversion tool is a comprehensive guide to do so. PDF No. 2 Fuel Oil - Apex Oil EPA provides a 1.0 psi RVP allowance for gasoline containing 10 percent ethanol. That table has values for gasolines (of various Reid Vapor Pressures), crude oil, jet fuel, kerosene, diesel (#2 fuel oil) and Heavy Fuel Oil (#6 fuel oil). Online calculator: Density of oil - PLANETCALC Beauregard, Calcasieu, Jefferson, Lafayette, Lafourche, Orleans, Pointe Coupee, St. Bernard, St. Charles, St. James, and St. Mary Parishes Louisiana; Is water kept in a closed container at 20 degree Celsius - ResearchGate Learn the vapor pressure value of ethanol and other liquids at room temperature: 20C-25C or 68F-77F. What is the total volume (mL) of the vessel? Crisp, A.J., Bhalla, A.K. 10% of the temperature especially at high temperatures. Vapor pressure - Wikipedia How to Install an Isuzu Rodeo's Fuel Filter. Vapour Pressure of Diesel Fuel - QS Study Please let us know here why this post is inappropriate. The vessel temperature was increased from 250C to 280C wile keeping the volume from part the same. What is vapor pressure of #1 Diesel fuel - Eng-Tips Forums EPA transferred the relevant 40 CFR part 80 provisions into a new set of regulations in 40 CFR part 1090. 1That portion of Larimer County, CO that lies south of a line described as follows: Beginning at a point on Larimer Countys eastern boundary and Weld Countys western boundary intersected by 40 degrees, 42 minutes, and 47.1 seconds north latitude, proceed west to a point defined by the intersection of 40 degrees, 42 minutes, 47.1 seconds north latitude and 105 degrees, 29 minutes, and 40.0 seconds west longitude, thence proceed south on 105 degrees, 29 minutes, 40.0 seconds west longitude to the intersection with 40 degrees, 33 minutes and 17.4 seconds north latitude, thence proceed west on 40 degrees, 33 minutes, 17.4 seconds north latitude until this line intersects Larimer Countys western boundary and Grand Countys eastern boundary. The equilibrium - in other words, steady state - between evaporation and condensation occurs when: the rate of evaporation of the liquid = Rate of condensation of the gas. The vapor pressure of a liquid is defined as the pressure exerted by the molecules that escapes from the liquid to form a separate vapor phase above the liquid surface. Standards for June 1to September 15 are maximum per-gallon standards for all regulated parties including retailers and wholesale purchaser-consumers, unless the state has an extended summer ozone season as part of the federally-approved SIP (e.g., Arizona, Eastern Texas). Use one of the popular approximations, e.g., Antoine formula. Miami, Tampa and Jacksonville, Florida; EPA published a final rule on December 22, 2017 (82 FR 60675) that relaxed the 7.8 psi federal RVP standard for Shelby County. The relative density of fuel, sometimes called the API specific gravity, refers to the amount of fuel per unit. Lowe earned her Bachelor of Arts degree in English from Huntington University. The vapor pressure of water is crucial for life forms on Earth, as its value is high enough to allow for the process of evaporation but low enough to also allow for the existence of liquid and solid water. It does not store any personal data. The flash point is sometimes confused with the autoignition temperature, the temperature that causes spontaneous ignition. When comparing vapor pressures we need to be making comparisons at the same temperature. This website uses cookies to improve your experience while you navigate through the website. 4.08245: 1346.382-53.508: Gaw and Swinton, 1968: Coefficents calculated by NIST from author's . The disadvantages of hydrostatic transmission, How to calculate superheat and subcooling, Turbo Direct Injection Club: Engine Manufacturers Association Recommended Guideline on Diesel Fuel, Diesel Fuels: Physical Properties of Diesel Fuels, U.S. Department of Energy: Alternative and Advanced Fuels, U.S. Department of Energy: Properties of Fuels. What is Melting Point of Formed Compound? What elements are needed by the body in small amounts? BYJUS online vapor pressure calculator tool makes the calculation faster and it displays the vapor pressure in a fraction of seconds. Viscosity for diesel fuel at 40 degrees Celsius, or 40 degrees Celsius, should be between 2 to 4.4 * 10-5 ft^2/s. RVP is an abbreviation for Reid vapor pressure, a common measure of and generic term for gasoline volatility. EPA published a final rule on July 2, 2015 (80 FR 38284) that relaxed the 7.8 psi federal RVP standard in Jefferson and Shelby counties. Vapor pressure is the pressure exerted by a vapor which is in thermodynamic equilibrium with its condensed phases (solid or liquid) in a closed system at a given temperature. Liquids - Vapor Pressures - Engineering ToolBox The vapor pressure of a liquid is the point at which equilibrium pressure is reached, in a closed container, between molecules leaving the liquid and going into the gaseous phase and molecules leaving the gaseous phase and entering the liquid phase. (2) Y ct =Mass emissions as calculated from the "transient" phase . C.C. The saturation vapour pressure is the pressure at which water vapour is in thermodynamic equilibrium with its condensed state.At pressures higher than vapour pressure, water would condense, whilst at lower pressures it would evaporate or . Google use cookies for serving our ads and handling visitor statistics. 360 - 385. EPA issued a final rule on May 22, 2014 (79 FR 29362) that relaxed the 7.8 psi federal RVP standard in Broward, Dade, Duval, Hillsborough, Palm Beach and Pinellas Counties in Florida. CEN/TR 15138 Guide to Flash Point Testing and ISO TR 29662 Guidance for Flash Point Testing cover the key aspects of flash point testing. The most often used is the Antoine equation (4.232kPa4.232\ \mathrm{kPa}4.232kPa), but the Buck formula (4.245kPa4.245\ \mathrm{kPa}4.245kPa) is usually the most accurate one for temperature ranges we typically look for. Diesel fuel flash points vary between 52 and 96 C (126 and 205 F). A The vapor pressure curve of water intersects the P = 1000 mmHg line at about 110C; this is therefore the boiling point of water at 1000 mmHg. A .gov website belongs to an official government organization in the United States. JavaScript appears to be disabled on this computer. Shelby County (Memphis), Tennessee; and As of that date no counties in Florida are subject to the 7.8 psi federal volatility standard. The density of oil at 20 deg C and zero overpressure is calculated according to the formula. The test methodology defines the apparatus required to carry out the measurement, key test parameters, the procedure for the operator or automated apparatus to follow, and the precision of the test method. As part of the effort to streamline and simplify the volatility regulations EPA has eliminated the state-by-state table that had been contained in 40 CFR 80.27. That table has been replaced by regulatory text that explains that summer gasoline (e.g., gasoline that is sold to consumers between June 1st and September 15th) must meet a maximum per-gallon RVP limit of 9.0 psi unless it is required to meet a lower RVP limit. Nashville (Middle Tennessee Area); Vapor Pressure, also known as bubble point pressure and accurate vapor pressure, is the pressure where the primary bubble of vapor is shaped at a given temperature. Other examples can be given but enough has been said to support the view that the diesel concentration in the calculation is sufficient to be harmful. Milton Beychok(Contact me at www.air-dispersion.com). The 1.0 psi ethanol waiver is not applicable during the entire volatility control period defined in the SIP (e.g. The temperature TTT is expressed in degrees Celsius and the vapor pressure PPP is in mmHg\mathrm{mmHg}mmHg. 2D fuels are used in warmer weather and are sometimes mixed with 1D fuel to . The Tetens equation works well for 0C0\ \degree\mathrm{C}0C - 50C50\ \degree\mathrm{C}50C range, but Buck beats all of them for every checked value. The effective date of the rule is April 7, 2017. [1] Neither flash point nor fire point depends directly on the ignition source temperature, but ignition source temperature is far higher than either the flash or fire point, and can increase the temperature of fuel above the usual ambient temperature to facilitate ignition. Dhring's rule states that a linear relationship exists between the . can be broadly compared with threshold limit values for pure hydrocarbon compounds. The Antoine equation is derived from the ClausiusClapeyron relation (the one we used in our boiling point calculator). Fuel oil, [diesel], NIOSH: Pocket Guide to Chemical Hazards - Yet both Jet B and JP-4 have flash points between 23 and 1C (9 and 30F). Hence, temperature determines the concentration of vapor of the flammable liquid in the air. Necessary cookies are absolutely essential for the website to function properly. Vapor pressure definition, Vapor pressure of water calculator - how to use, One for describing the vapor pressure curve. The cookie is used to store the user consent for the cookies in the category "Performance". The pour point of a liquid refers to the minimum temperature that liquid will pour or flow. 303. Temperature Step=. The list of areas subject to the federal 7.8 psi RVP limit appears below: Denver-Boulder-Greeley-Ft. Collins-Loveland, Adams Arapahoe, Boulder, Broomfield, Denver, Douglas, Jefferson, Larimer,1 Weld2, Clackamas (only the Air Quality Maintenance Area), Multnomah (only the Air Quality Maintenance Area), Washington (only the Air Quality Maintenance Area), Marion (only the Salem Area Transportation Study), Polk (only the Salem Area Transportation Study). Discover how this hybrid manufacturing process enables on-demand mold fabrication to quickly produce small batches of thermoplastic parts. Vapour pressure curves for various high vapour pressure products - ic Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a parts function at the center of their design considerations. It works for many substances, although you need to know the coefficients. At this point, there are as many molecules leaving the liquid and entering the gas phase as there are molecules leaving the gas phase and entering the liquid phase. Contact Dermatitis 34(5): 309-315, 1996. For example, air at sea level, and saturated with water vapor at 20 C, has partial pressures of about 2.3 kPa of water, 78 kPa of nitrogen, 21 kPa of oxygen and 0.9 kPa of argon, . The relative density of fuel, sometimes called the API specific gravity, refers to the amount of fuel per unit. The final reported test results shall be computed by use of the following formula: (a) For light-duty vehicles and light duty trucks: Where: (1) Y WM = Weighted mass emissions of each pollutant, i.e., THC, CO, THCE, NMHC, NMHCE, CH 4, NO X, or CO 2, in grams per vehicle mile. The calculation concerning the vapor pressure of diesel below: We first note that a p.p.m. See Air Quality Designations and Classifications for the 8-Hour Ozone National Ambient Air Quality Standards; Early Action Compact Areas With Deferred Effective Dates, 69 Fed. You also have the option to opt-out of these cookies. As of July 2, 2015, no Alabama counties are subject to the 7.8 psi federal volatility standard. That for cetane is less than 1 mm mercury, yet another 'plus' for cetane. It is also used to characterize the fire hazards of fuels. Alternatively, if the vapor pressure at 70C is 105.37 kPa and is known, you can use the 70 to 90C temperature differential to calculate the slope and intercept and ultimately calculate pv = 35.79 psia = 246.79 kPa. Typical minimum values for automotive diesel fuels range from 38C in the USA to 56C in some European countries. Density of oil at given temperature and pressure is expressed via density of oil at 15 deg C and zero overpressure. We can solve vapor pressure problems in either of two ways: by using Equation 13.6.1 to calculate the actual vapor pressure above a solution of a nonvolatile solute, or by using Equation 13.6.4 to calculate the decrease in vapor pressure caused by a specified amount of a nonvolatile solute. Join your peers on the Internet's largest technical engineering professional community.It's easy to join and it's free. Examine how the principles of DfAM upend many of the long-standing rules around manufacturability - allowing engineers and designers to place a parts function at the center of their design considerations. Dhring's rule. The 1990 Clean Air Act (CAA) Amendments added a new section, 211(h), that prohibited the EPA from establishing a volatility standard more stringent than 9.0 pounds per square inch (psi) in an ozone attainment area, except that EPA may impose a lower (i.e., more stringent) standard in any former ozone nonattainment area that has been redesignated to attainment. Number one diesel usually has greater volatility than number two diesel, and therefore has a lower distillation. Poof! Fuel oil, [diesel], Last Updated Date : Toluene - NIST Methods for determining the flash point of a liquid are specified in many standards. Lower RVP limits apply in areas that are: The regulatory text in 40 CFR 1090.215(a)(2) contains a table that lists the six areas that are currently subject to the federal 7.8 psi RVP standard. Note the mention of a "closed container". For gasoline, vapor pressure is important for both performance and environmental reasons. - 343. 392. 90 deg F = 0.016. The Engine Manufacturers Association, with approval from the United States Department of Energy, put out a recommended guideline designed to define the limitations of key physical properties for diesel fuel in order to maintain its newly improved quality level. Fuels under viscosity requirements often provide insufficient lubrication, while fuels above those requirements cause poor combustion. So it doesn't matter if we put our liquid into a wide flask or a thin graduated cylinder - the vapor pressure remains the same. Diesel is suitable for use in a compression-ignition engine. Acetaldehyde: 20: 0.295: 0.788: 105: Acetaldehyde: 30: 0.275: 0 . about 0.85 kg/l DIESEL FUEL | Occupational Safety and Health Administration We also use third-party cookies that help us analyze and understand how you use this website. If you want the saturated vapor pressure enter the air temperature: saturated vapor pressure: Fahrenheit Celsius Kelvin. * EPA set the Reid Vapor Pressure (RVP) standard at 9.0 psi for designated volatility attainment areas and the RVP standard at 7.8 psi for certain designated volatility nonattainment areas. Vapor pressure is the pressure exerted by a vapor which is in thermodynamic equilibrium with its condensed phases (solid or liquid) in a closed system at a given temperature. In chemistry, vapor pressure is the pressure that is exerted on the walls of a sealed container when a substance in it evaporates (converts to a gas). K. Delimiter: Tab Space Comma (,) Semicolon (;) Accuracy: For many substances, vapor pressures are only poorly known; expect errors up to a few 10% of the vapor pressure value and up to approx. If you want the actual vapor pressure enter the dewpoint: Wood. Vapor pressure does not blend linearly with . Type negative temperatures into the calculator and the vapor pressure will be determined according to Buck and Teten's formulas. The cooling capacity needed by ultra-low temperature apparatus cannot be reached economically with a single vapor compression refrigeration cycle due to the constraint of the high compressor pressure ratio. The table below shows the comparison of the accuracies between different formulas for several temperatures from 0C0\ \degree\mathrm{C}0C - 100C100\ \degree\mathrm{C}100C range (32F32\ \degree\mathrm{F}32F - 212F212\ \degree\mathrm{F}212F). When these data were not available or unreliable (e.g. The cookie is set by the GDPR Cookie Consent plugin and is used to store whether or not user has consented to the use of cookies. Depending on the state and month, gasoline RVP was not to exceed 10.5 pounds per square inch (psi), 9.5 psi, or 9.0 psi. The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". Das, M. and Misra, M.P. For all regulated parties except retailers and wholesale purchaser-consumers, maximum standards generally take effect May 1. This cookie is set by GDPR Cookie Consent plugin. EPA published a final rule on December 26, 2017 (82 FR 60886) that relaxed the 7.8 psi federal RVP requirement for the Louisiana parishes of Beauregard, Calcasieu, Jefferson, Lafayette, Lafourche, Orleans, Pointe Coupee, St. Bernard, St. Charles, St. James, and St. Mary. The cookies is used to store the user consent for the cookies in the category "Necessary". Engineering Mechanical Engineering You have two phases of liquid and vapor (i.e., wet steam) at 250C in a high-temperature high-pressure vessel, which contains 0.8 grams of vapor and 5 grams of liquid. Solved The vapor pressure at 20 degrees Celcius for the - Chegg Already a Member? The vapour pressure of diesel should be 0 kPa. 22.5 - 24. Fuels which have a flash point less than 37.8C (100.0F) are called flammable, whereas fuels having a flash point above that temperature are called combustible. by Tim Brice and Todd Hall. Vapor Pressure - Chemistry LibreTexts Is it Soluble in Water. A lock (LockA locked padlock) or https:// means youve safely connected to the .gov website. EPA published a rule on October 24, 2018 (83 FR 53584) that relaxed the 7.8 psi federal RVP requirement for the Louisiana parishes of East Baton Rouge, West Baton Rouge, Livingston, Ascension, and Iberville (the Baton Rouge Area). The effective date of the rule is July 2, 2015. Vapor pressure is one of the fluid characteristics: it's a measure of the tendency of a material to change into the gaseous/vapor state. Vapour pressure=1.. 10 kPa at 38 C for diesel and JP-4, 0.5.. 5 kPa at 38 C for kerosene. What is the relative density of diesel fuel? 2 Defined as temperature at which the vapor pressure of a liquid equals the surrounding atmospheric pressure 3 Reid vapor pressure at 37.8C . The boiling point is defined as the temperature at which the saturated vapor pressure of a liquid is equal to the surrounding atmospheric pressure. log 10 (P) = A (B / (T + C)) P = vapor pressure (bar) T = temperature (K) Temperature (K) A B C Reference Comment; 273.13 - 297.89: 4.23679: 1426.448-45.957: Besley and Bottomley, 1974: Coefficents calculated by NIST from author's data. As of April 12, 2021, no counties in Kansas are subject to the States 7.0 psi volatility requirement. Ash content measures the amount of metal within diesel fuel. The absolute vapour pressure of a liquid occurs at 37.8 degrees Celsius or 37.8 degrees Celsius. Functional cookies help to perform certain functionalities like sharing the content of the website on social media platforms, collect feedbacks, and other third-party features. Promoting, selling, recruiting, coursework and thesis posting is forbidden. 20800. The cookie is used to store the user consent for the cookies in the category "Analytics". 200. The effective date of the rule is January 22, 2019. The change in vapor pressure of a pure substance as temperature changes can be described using the equation known as the Clausius-Clapeyron Equation: (1) l n P 2 P 1 = H v a p R ( 1 T 1 1 T 2) Where: P1 is the partial pressure of the liquid at T1. The fire point is the lowest temperature at which the vapors keep burning after the ignition source is removed. This ebook covers tips for creating and managing workflows, security best practices and protection of intellectual property, Cloud vs. on-premise software solutions, CAD file management, compliance, and more. P0 A PA = PA = XBP0 A. Depending on the state and month, gasoline RVP may not exceed 9.0 psi or 7.8 psi. A straw yellow to dark colored liquid with a petroleum-like odor. Designations and exact boundaries of the ozone nonattainment areas subject to the 7.8 psi RVP standard were published in the November 6, 1991, notice that designated areas pursuant to CAA section 107(d)(4)(A)(ii). Registration on or use of this site constitutes acceptance of our Privacy Policy. Whether you need to fix, build, create or learn, eHow gives you practical solutions to the problems life throws at you. What is the relative density of diesel fuel? I ran a simulation on a mixture and got the following: For a 10 pis RVP, the true VP was 5.2 psia at 20 C and 33 psia at 80C. Vapor Pressure of Water Calculator | Definition | Formulas What is the vapour pressure of cetane diesel? These applications will - due to browser restrictions - send data between your browser and our server. We can cautiously compare diesel with n-dodecane in these terms as this has a vapor pressure of 0.3 mm Hg, a value typical of a diesel. The cookie is used to store the user consent for the cookies in the category "Other. Sorry, forgot to note its a Reid vapor pressure. Energies | Free Full-Text | Thermodynamic Analysis of an Innovative 23858 (August 30, 2004) (codified at 40 CFR part 81). Determination of flash point by the Small Scale closed cup method is detailed in ASTM D3828 and D3278, EN ISO 3679 and 3680, and IP 523 and 524. What is the vapour pressure of diesel fuel? Only emails and answers are saved in our archive. You can also use another equation, called the Goff-Gratch formula, but as it's more complicated (and approximately as accurate as the Buck formula), we didn't implement it in our vapor pressure of water calculator. Learn methods and guidelines for using stereolithography (SLA) 3D printed molds in the injection molding process to lower costs and lead time. Air is compressed until it heats above the autoignition temperature of the fuel, which is then injected as a high-pressure spray, keeping the fuel-air mix within flammable limits. Specifically, vapor pressure is a measure of the volatility of a fuel, or the degree to which it vaporizes at a given temperature. The fuel is mixed with air within its flammable limits and heated by compression and subject to Boyle's Law above its flash point, then ignited by the spark plug. Accelerated stability tests for the stability of diesel fuel under normal storage conditions, and unstable fuels darken and create gum residues. Vapour Pressure of Diesel Fuel Hydrocarbon Vapour pressures of diesel at room temperature are very low; that discussed in has a vapor pressure of 0.4 mm Hg (E 0.053 kPa). Raleigh-Durham-Chapel Hill, Greensboro, Winston-Salem, High Point and Charlotte, North Carolina; 11.5: Vapor Pressure - Chemistry LibreTexts This cookie is set by GDPR Cookie Consent plugin. Certain SIP-approved fuel programs do not provide for use of a 1.0 psi ethanol waiver under 40 CFR 1090.215(b). So its correct to say water as saturated or subcooled liquid at 20 deg C with . The Engine Manufacturers Association, with approval from the United States Department of Energy, put out a recommended guideline designed to define the limitations of key physical properties for diesel fuel in order to maintain its newly improved quality level. Assume we want to calculate the vapor pressure of water in 86F86\ \degree\mathrm{F}86F (30C30\ \degree\mathrm{C}30C). B The vertical line corresponding to 250C intersects the vapor pressure curve of mercury at P 75 mmHg. The coefficient of volumetric expansion at 15 deg C is calculated according to the formula. 12/28/2020, Occupational Safety & Health Administration, Occupational Safety and Health Administration, Outreach Training Program (10- and 30-hour Cards), OSHA Training Institute Education Centers, Severe Storm and Flood Recovery Assistance, 68334-30-5; 68476-30-2; 68476-31-3; 68476-34-6; 77650-28-3. 1 kPa = 103 Pa = 0.145 psi Sponsored Links Related Topics Learn more about the RVP federal regulations. *Eng-Tips's functionality depends on members receiving e-mail. 90 - 100. That for cetane is less than 1 mm mercury, yet another plus for cetane. Thanks. The measured flash point will actually vary with the height of the flame above the liquid surface and, at sufficient height, the measured flash point temperature will coincide with the fire point. Lubricity refers to a fluid's ability to minimise friction between two surfaces in motion with each other. Fischer, T. and Bjarnason, B.: Sensitizing and irritant properties of 3 environmental classes of diesel oil and their indicator dyes. Vapor or saturation pressure depends on temperature. * Gas density in atoms or molecules per volume, assuming a monatomic gas unless the substance is given as molecule. The pressure exerted by the vapor phase is called the. Note that a closed container is required, as otherwise, the molecules in the gas phase will fly away. You'll find the definition, five different vapor pressure formulas, and details about the most often-used one - Antoine equation. Add standard and customized parametric components - like flange beams, lumbers, piping, stairs and more - to your Sketchup model with the Engineering ToolBox - SketchUp Extension - enabled for use with the amazing, fun and free SketchUp Make and SketchUp Pro .Add the Engineering ToolBox extension to your SketchUp from the SketchUp Pro Sketchup Extension Warehouse! The vapor pressure will be relatively low for substances with stronger intermolecular forces. Hence this is the pressure required for mercury to boil at 250C. large difference between vapor pressure of the solid and liquid phase at the melting point), fits to values from. List of Vapor Pressure Values. By joining you are opting in to receive e-mail. For a more generic tool, visit our vapor pressure calculator! Volatility is the property of a liquid fuel that defines its evaporation characteristics. http://www.epa.gov/ttn/chief/ap42/index.html, Low-Volume Rapid Injection Molding With 3D Printed Molds, Industry Perspective: Education and Metal 3D Printing. Vapor Pressure Calculator is a free online tool that displays the vapor pressure of a solid or liquid at a given temperature. The final rule was effective on April 12, 2021. Typical Diesel Info - Chemical process engineering - Eng-Tips