Which of the following is an example of a grade D product?

Kerosene is indeed classified as a grade D product, which refers to its use and characteristics in the context of the transportation and handling of petroleum products. Specifically, grade D products typically include those with a flash point between 100°F (38°C) and 140°F (60°C), which categorizes them as less hazardous compared to products with lower flash points. Kerosene generally has a flash point in this range, making it suitable for this classification.

In contrast, commercial gasoline and aviation gas (grade 115/145) have lower flash points and are therefore classified as grade B products, which are considered more hazardous due to their volatility. Heavy fuel oil, while also a distinct type of petroleum product, does not fall under the grade D category due to its different physical properties and usage. Understanding these classifications is crucial for handling and safety protocols in the transportation and storage of petroleum products.