What is the CAS number of diesel?
2 Answers
The CAS number of diesel is 68334-30-5. Below is an introduction to diesel: 1. Overview: Diesel is divided into two main categories: light diesel (boiling point range approximately 180-370°C) and heavy diesel (boiling point range approximately 350-410°C). The most important performance characteristics of diesel are ignition quality and fluidity, with the technical indicators being cetane number and pour point, respectively. Current specifications in China require the sulfur content in diesel to be controlled between 0.5% and 1.5%. 2. Grades: Similar to gasoline for vehicles, diesel also has different grades. Diesel is graded by pour point, with light diesel having six grades: 5, 0, -10, -20, -35, and -50, and heavy diesel having three grades: 10, 20, and 30. The selection of diesel is based on the operating temperature. Diesel vehicles primarily use the latter five grades of diesel. When the temperature is above 4°C, 0# diesel is selected; when the temperature is between 4°C and -5°C, -10# diesel is selected. When the temperature is between -5°C and -14°C, -20# diesel is selected; when the temperature is between -14°C and -29°C, -35# diesel is selected. If the selected diesel grade is higher than the aforementioned temperatures, the fuel system in the engine may experience wax formation, blocking the fuel lines and affecting the normal operation of the engine.
Diesel is not a single substance but a mixture, primarily composed of various hydrocarbons, so it doesn't have a unique CAS number. However, the standard CAS number for common diesel fuel is 68334-30-5, which serves as a universal identifier in chemical databases. Every time I help someone with diesel-related issues, I always remind them: it's not a pure chemical, and the CAS number is mainly used for safety data sheets, such as when cleaning up oil stains or handling spill incidents, to quickly check the composition and treatment methods. In automotive applications, using the wrong fuel in a diesel engine can cause severe damage, so knowing this number can help you verify the authenticity of the fuel at gas stations. For daily driving, there's no need to overthink the details, but having some emergency knowledge is always good.
