Home > Classroom

  • PHOSPHORUS DETERMINATION IN GASOLINE: D3231 PHOSPHORUS DETERMINATION IN GASOLINE: D3231TEST SUMMARYThis test method is applicable for the determination of phosphorus in the range from 0.2 to 40 mg/L. Organic matter in the sample is decomposed by ignition in the presence of zinc oxide. The residue is dissolved in sulfuric acid and reacted with ...
  • PHOSPHORUS DETERMINATION IN PETROLEUM PRODUCTS PHOSPHORUS DETERMINATION IN PETROLEUM PRODUCTSGENERALDepending upon the product, phosphorus can serve as a beneficial adjunct or as a deleterious agent. Phosphorus in gasoline will damage catalytic converters used in automotive emission control systems, and its level therefore is kept low. In additives ...
  • PETROLEUM WAX ANALYSIS BY GC: D5442 PETROLEUM WAX ANALYSIS BY GC: D5442EXPLANATIONThe determination of carbon number distribution of petroleum waxes and the normal and nonnormal hydrocarbons in each can be used for controlling the production processes as well as a guide to performance in many end users, particularly in rubber formulations. ...
  • PEROXIDE NUMBER OF PETROLEUM WAX: D1832 PEROXIDE NUMBER OF PETROLEUM WAX: D1832EXPLANATIONDeterioration of petroleum wax results in the formation of peroxides and other oxygen-containing compounds. The peroxide number measures those compounds that will oxidize potassium iodide. Thus the magnitude of the peroxide number is an indication of ...
  • PEROXIDE NUMBER OF AVIATION TURBINE FUELS: D3703 PEROXIDE NUMBER OF AVIATION TURBINE FUELS: D3703EXPLANATIONThe magnitude of the peroxide number is an indication of the quantity of oxidizing constituents present in the sample. Deterioration of turbine fuel results in the formation of the peroxides and other oxygen-carrying compounds. The peroxide number ...
  • POLYCHLORINATED BIPHENYLS (PCBs) IN WASTES BY GAS CHROMATOGRAPHY: D6160 POLYCHLORINATED BIPHENYLS (PCBs) IN WASTES BY GAS CHROMATOGRAPHY: D6160EXPLANATIONThis test method provides sufficient PCB data for many regulatory requirements. While the most common regulatory level is 50 ppm, lower limits are used in some locations. This test method uses a two-tiered analytical approach ...
  • PEROXIDES IN BUTADIENE: D5799 PEROXIDES IN BUTADIENE: D5799EXPLANATIONDue to inherent danger of peroxides in butadiene, specification limits are usually set for their presence. Butadiene polyperoxide is a very dangerous product of the reaction between butadiene and oxygen that can occur. The peroxide has been reported to be the cause ...
  • PARTICULATE CONTAMINATION IN MIDDLE DISTILLATE FUELS: D6217 PARTICULATE CONTAMINATION IN MIDDLE DISTILLATE FUELS: D6217(Equivalent Test Methods: IP 415 and ISO 15167)EXPLANATIONThe mass of particulates present in a fuel is a significant factor, along with size and the nature of the individual particles, in the rapidity with which the fuel filters and other small ...
  • PARTICULATE CONTAMINATION IN AVIATION FUEL: D2276 PARTICULATE CONTAMINATION IN AVIATION FUEL: D2276(Equivalent Test Method: IP 216)EXPLANATIONSee explanation in Test Method D5452. This test method uses a field monitor. Two methods are described. One measures gravimetrically. The other uses a color rating technique for rapid qualitative assessment of ...
  • PARTICULATE CONTAMINATION IN AVIATION FUELS: D5452 PARTICULATE CONTAMINATION IN AVIATION FUELS: D5452EXPLANATIONThis test method provides a gravimetric measurement of the particulate matter present in a sample of aviation turbine fuel. The objective is to minimize these contaminants to avoid filter plugging and other operational problems. Although tolerable ...