What is the difference between fuel A, B and C?

No. 92 gasoline A and B refer to the same grade of gasoline, and their combustion characteristics are mainly determined by their composition and the added chemicals such as accelerants and antiknock agents, so their combustion performance is basically the same.

In China, No. 92 gasoline usually adopts one of the two technical formulations specified in the national standard GB17930, which are type A and type B. The two models differ in gasoline composition, additive types and proportions, etc., but they have similar combustion characteristics and are generally used in gasoline engines suitable for small and medium-sized vehicles.

As a result, the combustion performance of gasoline A and B is not much different for the average small and medium-sized car, and most gas stations will offer both types of gasoline. For high-performance cars or some special engines, it is necessary to choose a higher grade of gasoline for better performance and higher combustion efficiency.

The flash point of gasoline is less than 28, which belongs to Class A hazardous chemicals. Class B is liquids with a flash point greater than or equal to 28 but less than 60. Such as kerosene for lamps, light diesel oil, etc.

The flash point is a safety indicator for the storage, transportation and use of flammable liquids, and it is also an indicator of the volatility of flammable liquids.

Gasoline is a volatile and flammable hydrocarbon mixture liquid that is fractionated and cracked from petroleum, and can be used as fuel. The appearance is a transparent liquid, flammable, with a distillation range of 30 to 220, the main components are C5 C12 aliphatic hydrocarbons and naphthenes, as well as a certain amount of aromatic hydrocarbons, and gasoline has a high octane number (anti-knock combustion).

And according to the octane number is divided into 89, 90, 92, 93, 95, 97, 98 and other grades, from January 2012, gasoline grades 90, 93, 97 revised to 89, 92, 95.

Security management scope.

Any chemicals listed in the "Catalogue of Hazardous Chemicals", that is, highly toxic chemicals and other chemicals that are toxic, corrosive, combustible, combustion-supporting, etc., and are harmful to the human body, facilities and the environment, are subject to the jurisdiction of the Regulations, involving enterprises that produce, import, store, use, operate, transport and dispose of hazardous chemicals.

The Catalogue of Hazardous Chemicals shall be determined, published and updated in a timely manner by the competent department of chemicals according to the identification and classification standards of chemical hazard characteristics, and the number of chemicals included in the revised catalogue will increase from the original 3,800 (2002 edition) to about 7,000.